WO2024014761A1

WO2024014761A1 - Method for correcting camera shake and electronic device supporting same

Info

Publication number: WO2024014761A1
Application number: PCT/KR2023/009301
Authority: WO
Inventors: 김순용; 전창현
Original assignee: 삼성전자 주식회사
Priority date: 2022-07-15
Filing date: 2023-07-03
Publication date: 2024-01-18

Abstract

An electronic device according to an embodiment may comprise a camera module and at least one processor operatively connected to the camera module. The at least one processor may identify the zoom magnification of the camera module. The at least one processor may identify the magnitude of movements of the electronic device. The at least one processor may determine a first ratio of a second region other than a first region having a size corresponding to the size of a second image acquired by correcting a camera shake inside a first image, with regard to the first image acquired to correct the camera shake, on the basis of the zoom magnification and the movement magnitude. The at least one processor may acquire the first image on the basis of the zoom magnification and the first ratio. The at least one processor may be configured to acquire the second image by correcting the camera shake on the basis of the first image.

Description

Method for compensating camera shake and electronic device supporting the same

The present disclosure relates to a method for correcting camera shake and an electronic device that supports the same.

Technologies for camera shake compensation (also referred to as “image stabilization”) include optical image stabilization (OIS), digital image stabilization (DIS), and electrical image stabilization (EIS). ) may include. Optical image stabilization may be a technology that corrects an image by moving a lens or image sensor based on the movement of an electronic device (e.g., a camera module) obtained from a sensor (e.g., a gyro sensor). Digital image stabilization may be a technology that extracts a vector related to the movement of an electronic device based on a difference image between frames of an image and corrects the image based on the extracted vector. Electronic image stabilization may be a technology that corrects images based on the movement of an electronic device obtained from a sensor (eg, a gyro sensor).

Digital image stabilization or electronic image stabilization includes a first area having a size corresponding to (e.g., the same as) the size of the image to be output through the display module and an additional second area (“margin area”) surrounding the first area. An image containing an image (e.g., an input image of a motion to correct camera shake) can be used to correct camera shake.

The electronic device maintains a fixed ratio between the second areas (or the ratio between the first area and the second area) (hereinafter also referred to as “margin ratio”) for the image used to correct camera shake. Using the image, camera shake can be corrected.

When an electronic device performs camera shake correction using an image with a fixed margin ratio, the amount of movement of the electronic device is greater than a certain size and/or the zoom factor of the camera module is greater than a specified zoom factor. , the size of the second area may be smaller than the size required to perform camera shake correction.

One embodiment of the present disclosure is to correct camera shake using an image with a margin ratio that is determined based on the size of the movement of the electronic device and/or the zoom magnification of the camera module and increases as the zoom magnification of the camera module increases. , relates to a method for correcting camera shake and an electronic device that supports the same.

The technical problems to be achieved by the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art related to this document from the description below. There will be.

An electronic device according to an embodiment may include a camera module and at least one processor operatively connected to the camera module. The at least one processor may check the zoom magnification of the camera module. The at least one processor may check the magnitude of movement of the electronic device. The at least one processor, based on the zoom factor and the magnitude of the movement, to a first image acquired to correct camera shake, a second image obtained by correcting camera shake within the first image The first ratio of the second area excluding the first area having a size corresponding to the size of may be determined. The at least one processor may acquire the first image based on the zoom magnification and the first ratio. The at least one processor may be configured to acquire the second image by correcting the camera shake based on the first image.

In one embodiment, a method for correcting camera shake in an electronic device may include checking the zoom magnification of a camera module of the electronic device. The method may include checking the magnitude of movement of the electronic device. The method corresponds to the size of the second image obtained by correcting the camera shake within the first image to the first image acquired to correct camera shake, based on the zoom factor and the magnitude of the movement. and determining a first ratio of the second area excluding the first area having a size of . The method may include acquiring the first image based on the zoom magnification and the first ratio. The method may include acquiring the second image by correcting the camera shake based on the first image.

In one embodiment, a non-transitory computer-readable medium having computer-executable instructions recorded thereon, wherein the computer-executable instructions, when executed, cause an electronic device including at least one processor to control the zoom of a camera module of the electronic device. You can check the magnification. When executed, the computer-executable instructions may cause an electronic device including at least one processor to determine the magnitude of movement of the electronic device. The computer-executable instructions, when executed, cause an electronic device including at least one processor to: The first ratio of the second area excluding the first area having a size corresponding to the size of the second image obtained by correcting the camera shake within the image can be determined. When executed, the computer-executable instructions may cause an electronic device including at least one processor to acquire the first image based on the zoom magnification and the first ratio. When executed, the computer-executable instructions may cause an electronic device including at least one processor to acquire the second image by correcting the camera shake based on the first image.

A method for correcting camera shake and an electronic device supporting the same according to an embodiment include a margin that is determined based on the size of the movement of the electronic device and/or the zoom magnification of the camera module and increases as the zoom magnification of the camera module increases. By using ratios, enhanced camera shake compensation can be performed.

1 is a block diagram of an electronic device in a network environment, according to one embodiment.

2 is a block diagram illustrating a camera module, according to one embodiment.

Figure 3 is a block diagram of an electronic device, according to one embodiment.

Figure 4 is a flowchart explaining a method for correcting camera shake, according to one embodiment.

Figure 5 is an exemplary diagram for explaining a first ratio according to an embodiment.

Figure 6 is a flow chart illustrating a method for determining a first ratio, according to one embodiment.

FIG. 7 is an example diagram illustrating a method of determining a first ratio when the magnitude of movement of an electronic device is less than a threshold, according to an embodiment.

FIG. 8 is an example diagram illustrating a method of determining a first ratio when the magnitude of movement of an electronic device exceeds a threshold, according to an embodiment.

9 is a flowchart illustrating a method for determining a first ratio, according to one embodiment.

FIG. 10 is an exemplary diagram illustrating a method of determining a first ratio according to an embodiment.

FIG. 11 is an exemplary diagram illustrating a method of determining a first ratio according to an embodiment.

FIG. 12 is a flowchart illustrating a method of acquiring a first image through a camera selected based on a first image-based zoom factor, according to an embodiment.

FIG. 13 is an example diagram illustrating a method of acquiring a first image through a camera selected based on a first image-based zoom factor, according to an embodiment.

Figure 14 is an example of a graph showing the first ratio determined by increasing the zoom magnification of the camera module when the first ratio is determined using the first ratio corresponding to 3 times the camera module, according to one embodiment. It's a degree.

Figure 15 is an example of a graph showing the first ratio determined by increasing the zoom magnification of the camera module when the first ratio is determined using the first ratio corresponding to twice the camera module, according to one embodiment. It's a degree.

FIG. 16 is an example diagram illustrating a change in the first image-based zoom ratio according to a change in the zoom ratio of the camera module, according to an embodiment.

1 is a block diagram of an electronic device 101 in a network environment 100, according to one embodiment.

Referring to FIG. 1, in the network environment 100, the electronic device 101 communicates with the electronic device 102 through a first network 198 (e.g., a short-range wireless communication network) or a second network 199. It is possible to communicate with at least one of the electronic device 104 or the server 108 through (e.g., a long-distance wireless communication network). According to one embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108. According to one embodiment, the electronic device 101 includes a processor 120, a memory 130, an input module 150, an audio output module 155, a display module 160, an audio module 170, and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or may include an antenna module 197. In some embodiments, at least one of these components (eg, the connection terminal 178) may be omitted or one or more other components may be added to the electronic device 101. In some embodiments, some of these components (e.g., sensor module 176, camera module 180, or antenna module 197) are integrated into one component (e.g., display module 160). It can be.

The processor 120, for example, executes software (e.g., program 140) to operate at least one other component (e.g., hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and various data processing or operations can be performed. According to one embodiment, as at least part of data processing or computation, the processor 120 stores commands or data received from another component (e.g., sensor module 176 or communication module 190) in volatile memory 132. The commands or data stored in the volatile memory 132 can be processed, and the resulting data can be stored in the non-volatile memory 134. According to one embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit or an application processor) or an auxiliary processor 123 (e.g., a graphics processing unit, a neural network processing unit) that can operate independently or together with the main processor 121. It may include a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, if the electronic device 101 includes a main processor 121 and a auxiliary processor 123, the auxiliary processor 123 may be set to use lower power than the main processor 121 or be specialized for a designated function. You can. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of it.

The auxiliary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (e.g., sleep) state, or while the main processor 121 is in an active (e.g., application execution) state. ), together with the main processor 121, at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) At least some of the functions or states related to can be controlled. According to one embodiment, co-processor 123 (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module 180 or communication module 190). there is. According to one embodiment, the auxiliary processor 123 (eg, neural network processing device) may include a hardware structure specialized for processing artificial intelligence models. Artificial intelligence models can be created through machine learning. For example, such learning may be performed in the electronic device 101 itself on which the artificial intelligence model is performed, or may be performed through a separate server (e.g., server 108). Learning algorithms may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but It is not limited. An artificial intelligence model may include multiple artificial neural network layers. Artificial neural networks include deep neural network (DNN), convolutional neural network (CNN), recurrent neural network (RNN), restricted boltzmann machine (RBM), belief deep network (DBN), bidirectional recurrent deep neural network (BRDNN), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the examples described above. In addition to hardware structures, artificial intelligence models may additionally or alternatively include software structures.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176) of the electronic device 101. Data may include, for example, input data or output data for software (e.g., program 140) and instructions related thereto. Memory 130 may include volatile memory 132 or non-volatile memory 134.

The program 140 may be stored as software in the memory 130 and may include, for example, an operating system 142, middleware 144, or application 146.

The input module 150 may receive commands or data to be used in a component of the electronic device 101 (e.g., the processor 120) from outside the electronic device 101 (e.g., a user). The input module 150 may include, for example, a microphone, mouse, keyboard, keys (eg, buttons), or digital pen (eg, stylus pen).

The sound output module 155 may output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. Speakers can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

The display module 160 can visually provide information to the outside of the electronic device 101 (eg, a user). The display module 160 may include, for example, a display, a hologram device, or a projector, and a control circuit for controlling the device. According to one embodiment, the display module 160 may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of force generated by the touch.

The audio module 170 can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module 170 acquires sound through the input module 150, the sound output module 155, or an external electronic device (e.g., directly or wirelessly connected to the electronic device 101). Sound may be output through the electronic device 102 (e.g., speaker or headphone).

The sensor module 176 detects the operating state (e.g., power or temperature) of the electronic device 101 or the external environmental state (e.g., user state) and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 176 includes, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, humidity sensor, or light sensor.

The interface 177 may support one or more designated protocols that can be used to connect the electronic device 101 directly or wirelessly with an external electronic device (eg, the electronic device 102). According to one embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102). According to one embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 can convert electrical signals into mechanical stimulation (e.g., vibration or movement) or electrical stimulation that the user can perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 can capture still images and moving images. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 can manage power supplied to the electronic device 101. According to one embodiment, the power management module 188 may be implemented as at least a part of, for example, a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101. According to one embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

Communication module 190 is configured to provide a direct (e.g., wired) communication channel or wireless communication channel between electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108). It can support establishment and communication through established communication channels. Communication module 190 operates independently of processor 120 (e.g., an application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module 190 may be a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., : LAN (local area network) communication module, or power line communication module) may be included. Among these communication modules, the corresponding communication module is a first network 198 (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (e.g., legacy It may communicate with an external electronic device 104 through a telecommunication network such as a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., LAN or WAN). These various types of communication modules may be integrated into one component (e.g., a single chip) or may be implemented as a plurality of separate components (e.g., multiple chips). The wireless communication module 192 uses subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199. The electronic device 101 can be confirmed or authenticated.

The wireless communication module 192 may support 5G networks after 4G networks and next-generation communication technologies, for example, NR access technology (new radio access technology). NR access technology provides high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low latency). -latency communications)) can be supported. The wireless communication module 192 may support high frequency bands (eg, mmWave bands), for example, to achieve high data rates. The wireless communication module 192 uses various technologies to secure performance in high frequency bands, for example, beamforming, massive array multiple-input and multiple-output (MIMO), and full-dimensional multiplexing. It can support technologies such as input/output (FD-MIMO: full dimensional MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., second network 199). According to one embodiment, the wireless communication module 192 supports Peak data rate (e.g., 20 Gbps or more) for realizing eMBB, loss coverage (e.g., 164 dB or less) for realizing mmTC, or U-plane latency (e.g., 164 dB or less) for realizing URLLC. Example: Downlink (DL) and uplink (UL) each of 0.5 ms or less, or round trip 1 ms or less) can be supported.

The antenna module 197 may transmit or receive signals or power to or from the outside (eg, an external electronic device). According to one embodiment, the antenna module 197 may include an antenna including a radiator made of a conductor or a conductive pattern formed on a substrate (eg, PCB). According to one embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected to the plurality of antennas by, for example, the communication module 190. can be selected. Signals or power may be transmitted or received between the communication module 190 and an external electronic device through the at least one selected antenna. According to some embodiments, in addition to the radiator, other components (eg, radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module 197.

According to one embodiment, the antenna module 197 may form a mmWave antenna module. According to one embodiment, a mmWave antenna module includes: a printed circuit board, an RFIC disposed on or adjacent to a first side (e.g., bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., mmWave band); And a plurality of antennas (e.g., array antennas) disposed on or adjacent to the second side (e.g., top or side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (e.g., bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and signal ( (e.g. commands or data) can be exchanged with each other.

According to one embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199. Each of the external

electronic devices

102 or 104 may be of the same or different type as the electronic device 101. According to one embodiment, all or part of the operations performed in the electronic device 101 may be executed in one or more of the external

electronic devices

102, 104, or 108. For example, when the electronic device 101 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 may perform the function or service instead of executing the function or service on its own. Alternatively, or additionally, one or more external electronic devices may be requested to perform at least part of the function or service. One or more external electronic devices that have received the request may execute at least part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may process the result as is or additionally and provide it as at least part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology can be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of Things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 104 or server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

An electronic device according to an embodiment disclosed in this document may be of various types. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments of this document are not limited to the above-described devices.

An embodiment of this document and the terms used herein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various changes, equivalents, or substitutes for the embodiment. In connection with the description of the drawings, similar reference numbers may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the above items, unless the relevant context clearly indicates otherwise. As used herein, “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C”, and “A Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish one component from another, and to refer to that component in other respects (e.g., importance or order) is not limited. One (e.g., first) component is said to be “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicatively.” When mentioned, it means that any of the components can be connected to the other components directly (e.g. wired), wirelessly, or through a third component.

The term “module” used in one embodiment of this document may include a unit implemented in hardware, software, or firmware, and may be interchangeable with terms such as logic, logic block, component, or circuit, for example. can be used A module may be an integrated part or a minimum unit of the parts or a part thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

One embodiment of the present document is one or more instructions stored in a storage medium (e.g., built-in memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101). It may be implemented as software (e.g., program 140) including these. For example, a processor (e.g., processor 120) of a device (e.g., electronic device 101) may call at least one command among one or more commands stored from a storage medium and execute it. This allows the device to be operated to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. A storage medium that can be read by a device may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves), and this term refers to cases where data is semi-permanently stored in the storage medium. There is no distinction between temporary storage cases.

According to one embodiment, a method according to an embodiment disclosed in this document may be provided and included in a computer program product. Computer program products are commodities and can be traded between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium (e.g. compact disc read only memory (CD-ROM)), or through an application store (e.g. Play Store ^TM ) or on two user devices (e.g. It can be distributed (e.g. downloaded or uploaded) directly between smart phones) or online. In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

According to one embodiment, each component (e.g., module or program) of the above-described components may include a single or multiple entities, and some of the multiple entities may be separately placed in other components. . According to one embodiment, one or more of the above-described corresponding components or operations may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components (eg, modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each component of the plurality of components in the same or similar manner as those performed by the corresponding component of the plurality of components prior to the integration. . According to one embodiment, operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or , or one or more other operations may be added.

Figure 2 is a block diagram 200 illustrating a camera module 180, according to one embodiment.

Referring to FIG. 2, the camera module 180 includes a lens assembly 210, a flash 220, an image sensor 230, an image stabilizer 240, a memory 250 (e.g., buffer memory), or an image signal processor. It may include (260). The lens assembly 210 may collect light emitted from a subject that is the target of image capture. Lens assembly 210 may include one or more lenses. According to one embodiment, the camera module 180 may include a plurality of lens assemblies 210. In this case, the camera module 180 may form, for example, a dual camera, a 360-degree camera, or a spherical camera. Some of the plurality of lens assemblies 210 have the same lens properties (e.g., angle of view, focal length, autofocus, f number, or optical zoom), or at least one lens assembly is different from another lens assembly. It may have one or more lens properties that are different from the lens properties of . The lens assembly 210 may include, for example, a wide-angle lens or a telephoto lens.

The flash 220 may emit light used to enhance light emitted or reflected from a subject. According to one embodiment, the flash 220 may include one or more light emitting diodes (eg, red-green-blue (RGB) LED, white LED, infrared LED, or ultraviolet LED), or a xenon lamp. The image sensor 230 may acquire an image corresponding to the subject by converting light emitted or reflected from the subject and transmitted through the lens assembly 210 into an electrical signal. According to one embodiment, the image sensor 230 is one image sensor selected from among image sensors with different properties, such as an RGB sensor, a BW (black and white) sensor, an IR sensor, or a UV sensor, and the same It may include a plurality of image sensors having different properties, or a plurality of image sensors having different properties. Each image sensor included in the image sensor 230 may be implemented using, for example, a charged coupled device (CCD) sensor or a complementary metal oxide semiconductor (CMOS) sensor.

The image stabilizer 240 moves at least one lens or image sensor 230 included in the lens assembly 210 in a specific direction in response to the movement of the camera module 180 or the electronic device 101 including the same. The operating characteristics of the image sensor 230 can be controlled (e.g., adjusting read-out timing, etc.). This allows to compensate for at least some of the negative effects of said movement on the image being captured.

According to one embodiment, the image stabilizer 240 uses a gyro sensor (not shown) or an acceleration sensor (not shown) disposed inside or outside the camera module 180. 180) or such movement of the electronic device 101 may be detected. According to one embodiment, the image stabilizer 240 may be implemented as, for example, an optical image stabilizer. The memory 250 may at least temporarily store at least a portion of the image acquired through the image sensor 230 for the next image processing task. For example, when image acquisition is delayed due to the shutter or when multiple images are acquired at high speed, the acquired original image (e.g., Bayer-patterned image or high-resolution image) is stored in the memory 250. , the corresponding copy image (e.g., low resolution image) may be previewed through the display module 160. Thereafter, when a specified condition is satisfied (eg, user input or system command), at least a portion of the original image stored in the memory 250 may be obtained and processed, for example, by the image signal processor 260. According to one embodiment, the memory 250 may be configured as at least part of the memory 130 or as a separate memory that operates independently.

The image signal processor 260 may perform one or more image processes on an image acquired through the image sensor 230 or an image stored in the memory 250. The one or more image processes may include, for example, depth map creation, three-dimensional modeling, panorama creation, feature point extraction, image compositing, or image compensation (e.g., noise reduction, resolution adjustment, brightness adjustment, blurring). may include blurring, sharpening, or softening. Additionally or alternatively, the image signal processor 260 may include at least one of the components included in the camera module 180 (e.g., an image sensor). (230)) may perform control (e.g., exposure time control, read-out timing control, etc.). The image processed by the image signal processor 260 is stored back in the memory 250 for further processing. or may be provided as an external component of the camera module 180 (e.g., memory 130, display module 160, electronic device 102, electronic device 104, or server 108). According to an example, the image signal processor 260 may be configured as at least a part of the processor 120, or may be configured as a separate processor that operates independently of the processor 120. The image signal processor 260 may be configured as the processor 120. When configured as a separate processor, at least one image processed by the image signal processor 260 may be displayed through the display module 160 as is or after additional image processing by the processor 120.

According to one embodiment, the electronic device 101 may include a plurality of camera modules 180, each having different properties or functions. In this case, for example, at least one of the plurality of camera modules 180 may be a wide-angle camera, and at least another one may be a telephoto camera. Similarly, at least one of the plurality of camera modules 180 may be a front camera, and at least another one may be a rear camera.

Figure 3 is a block diagram of an electronic device 301, according to one embodiment.

Referring to FIG. 3 , in one embodiment, the electronic device 301 may include a camera module 310, a sensor 320, a display module 330, a memory 340, and a processor 350. .

In one embodiment, the camera module 310 may be included in the camera module 180 of FIGS. 1 and 2.

In one embodiment, the camera module 310 may include a plurality of cameras. For example, the camera module 310 may include a first camera (hereinafter referred to as “first camera”) with a fixed angle of view and/or a lens (e.g., lens assembly 210) according to the zoom magnification of the camera module. It may include a second camera (hereinafter referred to as “second camera”) having a view angle that can be changed by moving (e.g., a second camera supporting optical zoom).

In one embodiment, the camera module 310 may include at least one first camera and/or at least one second camera.

In one embodiment, sensor 320 may be included in sensor module 176 of FIG. 1 .

In one embodiment, the sensor 320 may include a sensor for acquiring the magnitude of movement (e.g., hand tremor) of the electronic device 301 (e.g., camera module 310). . For example, the sensor 320 may include a gyro sensor (eg, gyroscope) and/or an acceleration sensor to obtain the magnitude of movement of the electronic device 301.

In one embodiment, display module 330 may be included in display module 160 of FIG. 1 .

In one embodiment, the display module 330 may display an image acquired by the camera module 310. For example, the display module 330 may display dynamic images (eg, preview images, moving images) and/or still images acquired by the camera module 310.

In one embodiment, memory 340 may be included in memory 130 of FIG. 1 .

In one embodiment, the memory 340 may store information for performing an operation to correct camera shake. Information stored by the memory 340 will be described later.

In one embodiment, processor 350 may be included in processor 120 of FIG. 1 .

In one embodiment, the processor 350 may control overall operations to correct camera shake. In one embodiment, processor 350 may include one or more processors for correcting camera shake. Operations performed by the processor 350 to correct camera shake will be described later with reference to FIGS. 4 to 16.

In FIG. 3, the electronic device 301 is illustrated as including a camera module 310, a sensor 320, a display module 330, a memory 340, and/or a processor 350, but is not limited thereto. . For example, the electronic device 301 may further include at least one configuration shown in FIG. 1 . For example, the electronic device 301 may not include the sensor 320.

The electronic device 101 according to one embodiment may include a camera module 310 and at least one processor 350 operatively connected to the camera module 310. The at least one processor 350 may check the zoom magnification of the camera module 310. The at least one processor 350 may check the magnitude of movement of the electronic device 101. The at least one processor 350, based on the zoom magnification and the magnitude of the movement, for a first image acquired to correct camera shake, obtained by correcting camera shake within the first image The first ratio of the second area excluding the first area having a size corresponding to the size of the second image may be determined. The at least one processor 350 may acquire the first image based on the zoom magnification and the first ratio. The at least one processor 350 may acquire the second image by correcting the camera shake based on the first image.

In one embodiment, the at least one processor 350 may determine a fixed rate as the first rate when the magnitude of the movement is less than a threshold. When the magnitude of the movement exceeds the threshold, the at least one processor 350 may determine the first ratio so that the first ratio increases by increasing the zoom magnification of the camera module.

In one embodiment, the at least one processor 350 is configured to: If the magnitude of the movement exceeds the threshold: If the zoom magnification of the camera module 310 is less than or equal to a specified zoom magnification, the fixed ratio is adjusted to the Determine a first ratio, and if the zoom magnification of the camera module 310 exceeds the specified zoom magnification, the first ratio increases by increasing the zoom magnification of the camera module 310, It may be configured to determine a first ratio.

In one embodiment, the at least one processor 350, when the zoom factor of the camera module 310 exceeds the specified zoom factor, sets the zoom factor of the camera module 310 equal to the specified zoom factor. The first ratio may be determined using a field of view area corresponding to the second area determined.

In one embodiment, the threshold includes a first threshold and a second threshold that is greater than the first threshold, the specified zoom factor includes a specified first zoom factor and a specified second zoom factor, and the at least one processor (350) If the magnitude of the movement is less than or equal to the first threshold, determines the fixed rate as the first rate, and if the magnitude of the motion exceeds the first threshold and is less than or equal to the second threshold: If the zoom magnification of the camera module 310 is less than or equal to the designated first zoom magnification, the fixed ratio is determined as the first ratio, and the zoom magnification of the camera module 310 is the designated first zoom magnification. If exceeds, the first ratio is determined using a field of view area corresponding to the second area determined at the zoom magnification of the camera module 310, which is equal to the specified first zoom magnification, and the motion of When the size exceeds the second threshold: If the zoom magnification of the camera module 310 is less than or equal to the specified second zoom magnification, the fixed ratio is determined as the first ratio, and the camera module 310 ), if the zoom magnification exceeds the specified second zoom magnification, using a field of view area corresponding to the second area determined at the zoom magnification of the camera module 310, which is equal to the specified second zoom magnification, It may be configured to determine the first ratio.

In one embodiment, the camera module 310 includes a first camera having a fixed angle of view and a second camera supporting optical zoom, and the at least one processor 350 operates on the camera module 310 It may be configured to select a camera for acquiring the first image from among the first camera and the second camera based on a first image-based zoom factor that corresponds to the zoom factor and is based on the first image. .

In one embodiment, the at least one processor 350 determines whether the first image-based zoom factor is less than the specified first image-based zoom factor, and determines whether the first image-based zoom factor is less than the specified first image-based zoom factor. When it is confirmed that it is less than the base zoom magnification, the first camera is selected among the first camera and the second camera as a camera for acquiring the first image, and the first image-based zoom magnification is selected for the specified first image. If the zoom magnification is less than or equal to the base zoom magnification, the second camera may be selected among the first camera and the second camera as a camera for acquiring the first image.

In one embodiment, the at least one processor 350 acquires an image through the first camera when the first camera is selected as a camera for acquiring the first image, and the camera module 310 ) may be configured to acquire the first image by cropping the acquired image based on the zoom magnification and the first ratio.

In one embodiment, the at least one processor 350, when the second camera is selected as the camera for acquiring the first image, based on the zoom magnification and the first ratio of the camera module 310 After adjusting the settings of the second camera, the first image may be acquired through the second camera.

In one embodiment, the at least one processor 350 may be configured to acquire the second image by correcting the camera shake using optical image stabilization or electronic image stabilization based on the first image. You can.

FIG. 4 is a flowchart 400 illustrating a method for correcting camera shake, according to one embodiment.

Referring to FIG. 4 , in operation 401, in one embodiment, the processor 350 may check the zoom factor of the camera module.

In one embodiment, the processor 350 may set the zoom factor of the camera module based on user input. For example, while the camera application is running, the processor 350 displays a screen containing an object for setting (e.g., adjusting) the zoom ratio of the camera module through the display module 330. You can. The processor 350 maintains the zoom magnification of the camera module at the default zoom magnification (e.g., 1x), or increases the zoom magnification of the camera module (e.g., 1x) based on the user input for the object. : You can change the zoom factor of the camera module to 2x (2x)) or decrease it (e.g. change the zoom factor of the camera module to 0.5x (0.5x)).

In one embodiment, the processor 350 may check the zoom magnification of the camera module set based on user input.

In one embodiment, the zoom factor of the camera module may be a zoom factor based on an image displayed through the display module 330 (or an image resulting from camera shake correction). For example, the zoom magnification of the camera module may correspond to the angle of view area corresponding to the image displayed through the display module 330 (or the scene represented by the image displayed through the display module 330). For example, when the zoom factor of the camera module is set to 2x, the angle of view area corresponding to the image displayed through the display module 330 is the area of view corresponding to the image displayed through the display module 330 when the zoom factor of the camera module is set to 1x. It may be 1/4 of the field of view area represented by the image.

In one embodiment, the processor 350 may check the zoom factor of the camera module while acquiring an image through the camera module 310 (eg, while displaying a preview image). In one embodiment, the processor 350 may check the zoom factor of the camera module in response to the camera application being executed.

In operation 403, in one embodiment, the processor 350 may check the magnitude of the movement of the electronic device 301.

In one embodiment, the processor 350 determines the magnitude of movement of the electronic device 301 (e.g., camera module 310) based on information obtained through the sensor 320 (e.g., gyro sensor). You can. In one embodiment, the processor 350 may check the direction and/or size of movement of the electronic device 301 based on information acquired through the sensor 320.

In one embodiment, the processor 350 may check the magnitude of movement of the electronic device 301 based on a plurality of images continuously acquired through the camera module 310. For example, the processor 350 may acquire Image 1 and Image 2, which is acquired continuously after Image 1 (eg, following Image 1), through the camera module 310. The processor 350 may check the magnitude of the movement of the electronic device 301 based on the difference between the pixel values of image 1 and the pixel values of image 2. In one embodiment, the processor 350 may check the direction and/or size of movement of the electronic device 301 based on a plurality of images continuously acquired through the camera module 310.

In one embodiment, the processor 350 operates the electronic device 301 based on information acquired through the sensor 320 (e.g., a gyro sensor) and a plurality of images continuously acquired through the camera module 310. ) can be confirmed.

In FIG. 3 , the operation of checking the zoom magnification of the camera module in operation 401 is illustrated as being performed prior to the operation of checking the size of the movement of the electronic device 301 in operation 403, but the operation is not limited thereto. For example, the operation of checking the zoom magnification of the camera module in operation 401 is performed after the operation of checking the size of the movement of the electronic device 301 in operation 403 is performed, or the operation of checking the size of the movement of the electronic device 301 in operation 403 is performed. It can be performed simultaneously (e.g., in parallel) with the operation to check the size of the movement.

At operation 405, in one embodiment, the processor 350 determines a first image for the first image acquired to correct for camera shake, based on the zoom factor of the camera module and the magnitude of the movement of the electronic device 301. The first ratio of the second area excluding the first area having a size corresponding to the size of the second image obtained by correcting camera shake within the image may be determined.

In one embodiment, the first image acquired to correct camera shake (hereinafter referred to as “first image”) may be an image acquired before performing camera shake correction. For example, the first image may be an input image for camera shake correction (eg, camera shake correction using digital image stabilization or electronic image stabilization).

In one embodiment, the first image is, when the image is acquired through a first camera having a fixed angle of view (e.g., an angle of view that is maintained even if the zoom ratio of the camera module changes), the acquired image before performing camera shake correction. It may be an image that is cropped based on the zoom factor of the camera module.

In one embodiment, when an image is acquired through a second camera that supports optical zoom, the first image may be an image acquired through the second camera.

In one embodiment, the first image includes a first region (hereinafter referred to as “first region”) with a size corresponding to the size of the second image obtained by correcting camera shake, and a first region within the first image. It may include a second area (hereinafter referred to as “second area” or “margin area”) excluding the first area.

In one embodiment, the second image obtained by correcting camera shake (hereinafter referred to as “second image”) may be an image resulting from camera shake correction. For example, the second image may be an image output after performing camera shake correction using the first image.

In one embodiment, the first ratio (hereinafter referred to as “first ratio” or “margin ratio”) may be a ratio of the second area to the first image.

Hereinafter, with reference to FIG. 5, the first ratio will be described in detail.

FIG. 5 is an exemplary diagram 500 for explaining a first ratio according to an embodiment.

Referring to FIG. 5 , in one embodiment, the first image 510 may include a first area 521 and a second area 522.

In one embodiment, the first area 521 may be an area that has the same size as the second image, based on the center 511 of the first image. For example, the center of the first area 521 is the same as the center 511 of the first image, and the size (e.g. area) of the first area 521 is the size (e.g. area) of the second image. may be the same. For example, the first area 421 is the display module when the electronic device 301 does not move (e.g., when the value of the magnitude of movement of the electronic device 301 is substantially '0') It may be the same as the image to be output through (330).

In one embodiment, the second area 522 may be an area surrounding the first area 521 based on the center 511 of the first image (the center of the first area 521). The length of the outermost line of the second area 522 may be longer than the length of the outermost line of the first area 521. The ratio between the horizontal and vertical lengths of the outermost line of the second area 522 may be the same as the ratio between the horizontal and vertical lengths of the outermost line of the first area 521.

Hereinafter, the first ratio of the second area to the first image will be referred to as the ratio of the length of the sum of the widths of the second area to the length of one side of the first image. For example, in Figure 5, the first ratio is the upper width (d2) and the lower width (d2) of the second area 522 with respect to the vertical length (d1+2*d2) of the first image 510. It can be referred to as the ratio of the summed length (2*d2). For example, if the first ratio is 20%, the ratio of the summed length (2*d2) to the vertical length (d1) of the first image 510 may be 1/5 (20%). .

In one embodiment, it is described that the first ratio is used as the ratio of the second area to the first image to correct camera shake, but the present invention is not limited thereto. For example, to correct for camera shake, the first ratio can be replaced by the ratio of the second area 522 to the first area 521 or the ratio of the first area 521 to the first image 510. Ratios may be used.

Referring again to FIG. 4 , in one embodiment, the processor 350 may determine the first ratio based on the zoom magnification of the camera module and the magnitude of the movement of the electronic device 301. Hereinafter, with reference to FIGS. 6 to 11, a method of determining the first ratio will be described based on the zoom magnification of the camera module and the magnitude of movement of the electronic device 301.

6 is a flow diagram 600 illustrating a method for determining a first ratio, according to one embodiment.

FIG. 7 is an example diagram 700 illustrating a method of determining a first ratio when the magnitude of movement of the electronic device 301 is below a threshold, according to an embodiment.

FIG. 8 is an example diagram 800 illustrating a method of determining a first ratio when the magnitude of movement of the electronic device 301 exceeds a threshold, according to an embodiment.

Referring to FIGS. 6 to 8 , in operation 601, in one embodiment, the processor 350 may check whether the magnitude of the movement of the electronic device 301 is less than or equal to a threshold. For example, the processor 350 determines that the size of the movement of the electronic device 301 is the threshold by comparing the size of the movement of the electronic device 301 confirmed through operation 403 with the threshold (e.g., the size of the specified movement). You can check whether it is below or not.

If it is determined in operation 601 that the magnitude of the movement of the electronic device 301 is below the threshold, in operation 603, in one embodiment, the processor 350 determines a fixed rate (e.g., a specified rate) as the first rate. You can.

In one embodiment, when the processor 350 determines that the amount of movement of the electronic device 301 is below the threshold, the processor 350 maintains a fixed ratio ( Example: 20%) can be determined as the first ratio.

In one embodiment, at reference numeral 701 in FIG. 7, when it is confirmed that the zoom magnification of the camera module is 1x (1x) and the magnitude of the movement of the electronic device 301 is below the threshold, image 1 710 is the first Indicates a field of view area (e.g., a scene to be represented by the first image) corresponding to an image (e.g., the first image 510 of FIG. 5), and the area 713 represents the first area (e.g., the first area of FIG. 5 (e.g., the first area of FIG. 5). 521)), and area 715 may represent an angle of view area corresponding to a second area (e.g., second area 522 in FIG. 5). The first ratio at reference numeral 701 is a length (2*d12) that is the sum of the upper width (d12) and the lower width (d12) of the area 715 with respect to the vertical length (d11+2*d12) of image 1 (710). It may be the ratio (2*d12/(d11+2*d12)).

In one embodiment, at reference numeral 702 in FIG. 7, when it is confirmed that the zoom magnification of the camera module is 3x (3x) and the magnitude of the movement of the electronic device 301 is below the threshold, image 2 720 is the first Indicates an angle of view area corresponding to an image (e.g., a scene to be represented by the first image), area 723 indicates an angle of view area corresponding to the first area, and area 725 indicates an angle of view area corresponding to the second area. You can. The first ratio at reference numeral 702 is a length (2*d22) that is the sum of the upper width (d22) and the lower width (d22) of the area 725 with respect to the vertical length (d21+2*d22) of image 2 720. It may be the ratio (2*d22/(d21+2*d22)).

In one embodiment, at reference numeral 703 in FIG. 7, when it is confirmed that the zoom magnification of the camera module is 5x and the magnitude of the movement of the electronic device 301 is below the threshold, image 3 730 is the first image. may represent a field of view area corresponding to (e.g., a scene to be represented by the first image), area 733 may represent a field of view area corresponding to the first area, and area 735 may represent a field of view area corresponding to the second area. there is. At reference numeral 703, the first ratio is a length (2*d32) that is the sum of the upper width (d32) and lower width (d32) of the area 735 with respect to the vertical length (d31+2*d32) of image 3 730. It may be the ratio (2*d32/(d31+2*d32)).

In one embodiment, when the processor 350 determines that the magnitude of movement of the electronic device 301 is below a threshold, the processor 350 may determine a fixed ratio as the first ratio even if the zoom factor of the camera module increases (or decreases). there is. For example, when it is confirmed that the magnitude of the movement of the electronic device 301 is below the threshold, the first ratio of reference numeral 701 (2*d12/(d11+2*d12)), the first ratio of reference numeral 702 ( 2*d22/(d21+2*d22)), and the first ratio (2*d32/(d31+2*d32)) of reference numeral 703 may all be the same.

If it is determined in operation 601 that the magnitude of the movement of the electronic device 301 exceeds the threshold, in operation 605, in one embodiment, the processor 350 adjusts the zoom of the camera module based on the zoom factor of the camera module. The first magnification may be determined such that the first ratio increases by increasing the magnification.

In one embodiment, the processor 350, if the zoom magnification of the camera module (e.g., the current zoom magnification of the camera module 310) is less than or equal to the specified zoom magnification (hereinafter referred to as “specified zoom magnification”) (or the camera module A fixed ratio (in the first zoom magnification range of 310) may be determined as the first ratio. If the zoom magnification of the camera module exceeds the designated zoom magnification, the processor 350 may determine the first magnification using the angle of view area corresponding to the second area determined at the designated zoom magnification.

In one embodiment, at reference numeral 801 in FIG. 8, when the zoom magnification of the camera module is 1x (1x) and the magnitude of the movement of the electronic device 301 is confirmed to exceed the threshold, image 1 810 is Indicates the field of view area (e.g., the scene to be represented by the first image) corresponding to the first image (e.g., the first image 510 in FIG. 5), and the area 813 represents the first area (e.g., the first image 510 in FIG. 5). Area 521 may indicate an angle of view area corresponding to the area 521, and area 815 may indicate an angle of view area corresponding to a second area (e.g., second area 522 of FIG. 5). The first ratio at reference numeral 801 is a length (2*d12) that is the sum of the upper width (d12) and the lower width (d12) of the area 815 with respect to the vertical length (d11+2*d12) of image 1 (810). It may be the ratio (2*d12/(d11+2*d12)).

In one embodiment, at reference numeral 802 in FIG. 8, it is confirmed that the zoom magnification of the camera module is 3x (3x) and the magnitude of the movement of the electronic device 301 exceeds the threshold, and the specified zoom magnification is 3x (3x). In the case of 3x), image 2 820 represents a field of view area corresponding to the first image (e.g., a scene to be represented by the first image), area 823 represents a field of view area corresponding to the first area, and area ( 825) may indicate a field of view area corresponding to the second area. The first ratio at reference numeral 802 is a length (2*d22) that is the sum of the upper width (d22) and the lower width (d22) of the area 825 with respect to the vertical length (d21+2*d22) of image 2 820. It may be the ratio (2*d22/(d21+2*d22)). The processor 350 converts the first ratio of reference numeral 803 (2*d22/(d21+2*d22)) into the same ratio as the first ratio of 801 (2*d12/(d11+2*d12) ) can be determined.

In one embodiment, at reference numeral 803 in FIG. 8, it is confirmed that the zoom magnification of the camera module is 5x (5x) and the magnitude of the movement of the electronic device 301 exceeds the threshold, and the specified zoom magnification is 3x ( In the case of 3x), image 3 830 represents a field of view area corresponding to the first image (e.g., a scene to be represented by the first image), area 833 represents a field of view area corresponding to the first area, and area ( 835) may indicate a field of view area corresponding to the second area. The processor 350 generates a length (2) that is the sum of the widths of the view angle area (e.g., the width of the view angle area corresponding to the second area of reference numeral 802) corresponding to the second area of the specified zoom magnification (e.g., 3x). *d22)) can be used to determine the first magnification at a zoom magnification of 5x (5x) of the camera module. For example, as shown in reference numeral 803, when the zoom magnification of the camera module is 5x, the processor 350 sets the width of the angle of view area corresponding to the second area to 3x as the designated zoom magnification. It can be determined to be the same as the width d22 of the field of view area corresponding to the second area in (3x). As shown by reference numeral 803, the processor 350 generates an area 835 for the vertical length (d41+2*d22) of image 3 (830) when the zoom magnification of the camera module is 5x (5x). The ratio (2*d22/(d41+2*d22)) of the length (2*d22) obtained by adding the upper width (d22) and lower width (d22) of can be determined as the first ratio.

However, the method by which the processor 350 determines the first magnification, based on the zoom magnification of the camera module, so that the first ratio increases by increasing the zoom magnification of the camera module, is not limited to the above-described example. For example, the processor 350 may determine the first ratio such that the first ratio increases linearly as the zoom magnification of the camera module increases. For example, if the zoom factor of the camera module is below the specified zoom factor, a fixed ratio is determined as the first ratio, and if the zoom factor of the camera module exceeds the specified zoom factor, the zoom factor is adjusted linearly as the camera module's zoom factor increases. The first ratio can be determined so that the first ratio increases.

In FIGS. 6 to 8 described above, the threshold compared to the magnitude of the movement of the electronic device 301 is illustrated as one, but is not limited thereto. For example, the threshold compared to the magnitude of movement of the electronic device 301 may be two or more. Hereinafter, with reference to FIGS. 9 and 10 , a method for determining the first ratio will be described when there are two or more thresholds compared to the magnitude of movement of the electronic device 301.

9 is a flow diagram 900 illustrating a method for determining a first ratio, according to one embodiment.

FIG. 10 is an example diagram 1000 illustrating a method of determining a first ratio according to an embodiment.

9 and 10, in operation 901, in one embodiment, the processor 350 determines whether the magnitude of the movement of the electronic device 301 is less than or equal to a first threshold (hereinafter referred to as “first threshold”). You can check whether or not. For example, the processor 350 determines whether the amount of movement of the electronic device 301 is less than or equal to the first threshold by comparing the amount of movement of the electronic device 301 confirmed through operation 403 with the first threshold. You can check it.

If it is determined in operation 901 that the magnitude of the movement of the electronic device 301 is less than or equal to the first threshold, in operation 903, in one embodiment, the processor 350 determines a fixed rate (e.g., a specified rate) as the first rate. can be decided.

In one embodiment, the magnitude of movement of the electronic device 301 below the first threshold is determined when the electronic device 301 is mounted and fixed on another device (e.g., a tripod) or when a part of the electronic device 301 is folded. In a fixed state of operation (also referred to as “flex mode”), it may be the amount of movement that is measured.

Since operation 903 is at least partially the same or similar to operation 603, detailed description will be omitted.

If it is confirmed in operation 901 that the magnitude of the movement of the electronic device 301 exceeds the first threshold, the magnitude of the movement of the electronic device 301 exceeds the first threshold and the second threshold (hereinafter, “second threshold”) You can check whether or not it is below (referred to as ").

In one embodiment, the second threshold may be a value greater than the first threshold. For example, the magnitude of the movement of the electronic device 301 exceeding the first threshold and falling below the second threshold means that the user of the electronic device 301 carrying the electronic device 301 moves at a slow pace or moves the electronic device 301. It may be the size of movement measured while holding the device 301 in hand. For example, the magnitude of the movement of the electronic device 301 exceeding the second threshold is measured when the user of the electronic device 301 carrying the electronic device 301 moves at a faster pace. 301) may be the size of the movement.

If it is determined in operation 905 that the magnitude of the movement of the electronic device 301 exceeds the first threshold and is below the second threshold, in operation 907, in one embodiment, the processor 350 determines the specified motion of the camera module 310. The first ratio may be determined using the first ratio corresponding to the first zoom magnification.

If it is determined in operation 905 that the magnitude of the movement of the electronic device 301 exceeds the second threshold, in operation 909, in one embodiment, the processor 350 adjusts the specified second zoom factor of the camera module 310. The first ratio can be determined using the first ratio corresponding to .

Operations

907 and 909 will be described with reference to FIGS. 8, 10, and 11.

In one embodiment, when the processor 350 determines that the magnitude of movement of the electronic device 301 exceeds the first threshold and is below the second threshold, the processor 350 selects a zoom factor corresponding to the specified first zoom factor of the camera module 310. Using the first ratio, the first ratio can be determined. In one embodiment, the processor 350 configures the zoom factor of the camera module (e.g., the current zoom factor of the camera module 310) to be set to a specified first zoom factor (hereinafter referred to as “the designated first zoom factor”) (e.g., : If it is 3 times (3x) or less, the fixed ratio can be determined as the first ratio. For example, as described through

reference numerals

801 and 803 in FIG. 8, the processor 350, when the current zoom magnification of the camera module 310 is 3 times (3x) or less, the first zoom magnification of reference numeral 801 The same ratio as the ratio can be determined as the first ratio. In one embodiment, the processor 350, when the zoom factor of the camera module exceeds the specified first zoom factor (e.g., 3x (3x)), determines the zoom factor of the camera module that is equal to the specified first zoom factor. The first magnification can be determined using the field of view area corresponding to the second area. For example, as described through

reference numerals

802 and 803 in FIG. 8, when the zoom magnification of the camera module exceeds 3 times (3x), the width of the field of view area corresponding to the second area is changed to the designated first area. It can be determined to be equal to the width (d22) of the field of view area corresponding to the second area calculated at the zoom magnification of the camera module equal to the zoom magnification of 3x (3x). The processor 350 uses the width (d22) of the field of view area corresponding to the second area calculated at the zoom magnification of the camera module 3x (3x), which is the same as the specified first zoom magnification, of the camera module 310. A first ratio at the current zoom magnification may be determined.

In one embodiment, the processor 350, when it is determined that the magnitude of the movement of the electronic device 301 exceeds the second threshold, sets the designated second zoom magnification (hereinafter, “the designated second zoom factor) of the camera module 310. The first ratio may be determined using the first ratio corresponding to the “zoom magnification”).

In one embodiment, the specified second zoom factor may be a smaller zoom factor than the designated first zoom factor. For example, if the first designated zoom magnification is 3x (3x), the second designated zoom magnification may be 2x (2x).

In one embodiment, the processor 350 sets the fixed ratio when the zoom factor of the camera module (e.g., the current zoom factor of the camera module 310) is less than or equal to the specified second zoom factor (e.g., 2x). It can be determined by the first ratio. When the zoom magnification of the camera module exceeds the specified second zoom magnification, the processor 350 uses the view angle area corresponding to the second area calculated at the zoom magnification of the camera module that is the same as the specified second zoom magnification to create the first zoom magnification. The magnification can be determined.

In one embodiment, at reference numeral 1001 in FIG. 10, when the zoom magnification of the camera module is 1x (1x) and the magnitude of the movement of the electronic device 301 is confirmed to exceed the second threshold, image 1 (1010) ) represents a field of view area corresponding to the first image (e.g., a scene to be represented by the first image), area 1013 represents a field of view area corresponding to the first area, and area 1015 represents a field of view corresponding to the second area. The angle of view area can be indicated. At reference numeral 1001, the first ratio is a length (2*d12) that is the sum of the upper width (d12) and the lower width (d12) of the area 1015 with respect to the vertical length (d11+2*d12) of image 1 (1010). It may be the ratio (2*d12/(d11+2*d12)).

In one embodiment, at reference numeral 1002 in FIG. 10, it is confirmed that the zoom magnification of the camera module is 2x (2x) and the magnitude of the movement of the electronic device 301 exceeds the threshold, and the specified second zoom magnification is 2 In the case of 2x, image 2 (1020) represents the angle of view area corresponding to the first image (e.g., the scene to be represented by the first image), and area 1023 represents the angle of view area corresponding to the first area, Area 1025 may represent a field of view area corresponding to the second area. The first ratio at reference numeral 1002 is a length (2*d52) that is the sum of the upper width (d52) and the lower width (d52) of the area 825 with respect to the vertical length (d21+2*d22) of image 2 (1020). It may be the ratio (2*d52/(d51+2*d52)). The processor 350 converts the first ratio (2*d52/(d51+2*d52)) of reference numeral 1003 into the same ratio (2*d12/(d11+2*d12)) as the first ratio of 801. ) can be determined.

In one embodiment, at reference numeral 1003 in FIG. 10, it is confirmed that the zoom magnification of the camera module is 5x (5x) and the magnitude of the movement of the electronic device 301 exceeds the second threshold, and the specified second zoom magnification When this is doubled (2x), image 3 (1030) represents the angle of view area corresponding to the first image (e.g., the scene that the first image will represent), and area 1033 represents the angle of view area corresponding to the first area. and area 1035 may represent a field of view area corresponding to the second area. The processor 350 sums the widths of the angle of view area corresponding to the second area (e.g., the angle of view area corresponding to the second area of reference numeral 1002) calculated at the specified second zoom magnification (e.g., 2x). Using one length (2*d52)), the first magnification at 5x (5x) can be determined as the zoom magnification of the camera module. For example, as shown in reference numeral 1003, when the zoom magnification of the camera module is 5x, the processor 350 sets the width of the angle of view area corresponding to the second area to a designated second zoom magnification of 2. It can be determined to be equal to the width (d52) of the field of view area corresponding to the second area calculated at the zoom magnification of the camera module equal to the times (2x). As shown by reference numeral 1003, the processor 350 generates an area 1035 for the vertical length (d61+2*d52) of image 3 (1030) when the zoom magnification of the camera module is 5x (5x). The ratio (2*d52/(d61+2*d52)) of the length (2*d52) obtained by adding the upper width (d52) and lower width (d52) of can be determined as the first ratio.

In one embodiment, as described with reference to FIGS. 8 to 10, the processor 350, when the magnitude of the movement of the electronic device 301 is larger (e.g., the magnitude of the movement of the electronic device 301 is greater than the second threshold) exceeds the first threshold), compared to the case where the magnitude of the movement of the electronic device 301 is smaller (e.g., the magnitude of the motion of the electronic device 301 exceeds the first threshold and is less than or equal to the second threshold), the specified smaller The first ratio may be determined using the first ratio corresponding to the zoom magnification. For example, if the magnitude of movement of the electronic device 301 exceeds the first threshold and is below the second threshold, the processor 350 determines the first ratio using 3x as the designated first zoom magnification. And, if the magnitude of the movement of the electronic device 301 exceeds the second threshold, the first ratio may be determined using a designated second zoom magnification of 2x (2x), which is smaller than the designated first zoom magnification. Through this, the processor 350 can determine the first ratio so that the larger the magnitude of movement of the electronic device 301, the larger the first ratio.

In one embodiment, the processor 350 may store the first ratio corresponding to the zoom magnification of the camera module (and the magnitude of movement of the electronic device 301) in the memory 340 in the form of a table. The processor 350 may match the first ratio with the zoom magnification of the camera module and the size of the movement of the electronic device 301 and store the first ratio in the memory 340 in the form of a table. When the zoom magnification of the camera module and the size of the movement of the electronic device 301 are confirmed, the processor 350 uses the table stored in the memory 340 to calculate the zoom magnification of the camera module and the movement size of the electronic device 301. The first ratio corresponding to the size of the movement can be confirmed. The processor 350 may determine the confirmed first ratio as the first ratio.

In one embodiment, when the zoom magnification of the camera module and the magnitude of movement of the electronic device 301 are confirmed, the processor 350 may calculate the first ratio using a mathematical equation. Hereinafter, with reference to FIG. 11, a mathematical equation for the processor 350 to calculate the first ratio will be described.

FIG. 11 is an exemplary diagram 1100 illustrating a method of determining a first ratio according to an embodiment.

In one embodiment, the processor 350, when the magnitude of the movement of the electronic device 301 is greater than a threshold and the zoom factor of the camera module is less than or equal to the specified zoom factor, changes the first ratio to a fixed ratio (e.g., m(%) )). For example, at reference numeral 1101 in FIG. 11, when the zoom magnification of the camera module is 1x (1x) and the magnitude of the movement of the electronic device 301 is confirmed to exceed the threshold, image 1 1110 is the first 1 represents the angle of view area corresponding to the image (e.g., the scene to be represented by the first image), area 1113 represents the angle of view area corresponding to the first area, and area 1115 represents the angle of view area corresponding to the second area. It can be expressed. At reference numeral 1101, the first ratio is the ratio (m/100) of the length (m*a/100) of the sum of the upper and lower widths of the area 1015 to the vertical length (a) of image 1 (1010). You can.

In one embodiment, at reference numeral 1102 in FIG. 11, it is confirmed that the zoom magnification of the camera module is b times (bx) and the magnitude of the movement of the electronic device 301 exceeds the threshold, and the specified zoom magnification is b times (bx). bx), image 2 1120 represents a field of view area corresponding to the first image (e.g., a scene to be represented by the first image), area 1123 represents a field of view area corresponding to the first area, and area ( 1125) may indicate a field of view area corresponding to the second area. At reference numeral 1102, the first ratio is a length (m*a/(100 *b)) may be the ratio (m/100).

In one embodiment, at reference numeral 1103 in FIG. 11, it is confirmed that the zoom magnification of the camera module is c times (cx) and the magnitude of the movement of the electronic device 301 exceeds the threshold, and the specified zoom magnification is b times ( bx), image 3 (1130) represents the angle of view area corresponding to the first image (e.g., the scene to be represented by the first image), area 1133 represents the angle of view area corresponding to the first area, and area ( 1135) may indicate a field of view area corresponding to the second area. The processor 350 selects a field of view area corresponding to the second area where the specified zoom magnification is b times (bx) (e.g., a length (2*n1) obtained by adding up the widths of the view angle area corresponding to the second area of reference numeral 1102. ), the zoom magnification of the camera module can be determined as the first magnification at c times (cx). The processor 350 may determine the first magnification when the zoom magnification of the camera module is c times (cx) using [Equation 1] below.

[Equation 1]

First ratio = (m*c)/(m*c - m*b + 100*b)

In one embodiment, in [Equation 1], m may represent the first ratio determined when the zoom magnification of the camera module is less than or equal to the specified zoom magnification. In [Equation 1], b may represent a designated zoom factor, and c may represent the zoom factor of the current camera module of the camera module 310.

Referring back to FIG. 4 , in operation 407, in one embodiment, the processor 350 may acquire a first image based on the zoom factor and the first ratio of the camera module.

In one embodiment, the processor 350 may select a camera to acquire an image from among a plurality of cameras based on the first image-based zoom factor corresponding to the zoom factor of the camera module.

In one embodiment, as described above, the zoom magnification of the camera module may be a zoom magnification based on the image displayed through the display module 330 (or the resulting image of camera shake correction). For example, if the zoom magnification of the camera module is 5x (5x), the resulting image after camera shake correction obtained (e.g., the zoom magnification of the camera module is 5x (5x) and the magnitude of the movement of the electronic device 301 is The length of one side of the angle of view area indicated by the angle of view area corresponding to the first area (if below the threshold) is the result of the image after camera shake correction obtained at a zoom magnification of 1x (1x) of the camera module (e.g., the zoom magnification of the camera module) If this is 1x and the magnitude of the movement of the electronic device 301 is less than a threshold, the angle of view area corresponding to the first area may be 1/5 of the length of one side of the angle of view indicated by the angle of view area. For example, comparing reference numerals 1101 and 1103 in FIG. 11 , when the zoom magnification of the camera module is 1x (1x), one side of the field of view area corresponding to the first area 1113 (100-m) If *a/(100) and the zoom magnification of the camera module is c times (cx), one side of the angle of view area corresponding to the first area 1133 may be equal to e in [Equation 2] below.

[Equation 2]

e = (100-m)*a/(100*c).

In one embodiment, in [Equation 2], m may represent the first ratio determined when the zoom magnification of the camera module is less than or equal to the specified zoom magnification. In [Equation 2], a represents the angle of view area corresponding to the first image when the zoom magnification of the camera module is 1x (1x), b represents the specified zoom magnification, and c represents the angle of view of the camera module 310. The current zoom factor can be displayed.

In one embodiment, the first image-based zoom factor may be a zoom factor based on the first image as an input image for camera shake correction. For example, if the zoom factor based on the first image is 5x (5x), the length of one side of the field of view area represented by the obtained first image is 1x (1x). ) may be 1/5 of the length of one side of the field of view area represented by the first image acquired in ). For example, comparing reference numerals 1101 and 1103 in FIG. 11, when the first image-based zoom factor is 1x (1x), one side of the angle of view area corresponding to the first area 1113 is a, and the camera When the zoom magnification of the module is c times (cx), one side of the field of view area corresponding to the first area 1133 may be equal to f in [Equation 2] below.

[Equation 3]

f = (100-m)*a/(100*c) + 2*a/b*(m/100)

In one embodiment, in [Equation 3], m may represent the first ratio determined when the zoom magnification of the camera module is less than or equal to the specified zoom magnification. In [Equation 3], a represents the angle of view area corresponding to the first image when the zoom magnification of the camera module is 1x (1x), b represents the specified zoom magnification, and c represents the angle of view of the camera module 310. The current zoom factor can be displayed.

In one embodiment, the processor 350 uses [Equation 4] below, based on [Equation 2] and [Equation 3], to calculate a first image-based zoom factor (e.g., [Equation 4] g) can be calculated from .

[Equation 4]

g = e/f

In one embodiment, the processor 350 may select a camera to acquire an image from among the first camera and the second camera included in the plurality of cameras, based on the first image-based zoom factor. The processor 350 may acquire the first image through the selected camera. Hereinafter, with reference to FIGS. 12 and 13, a method of acquiring a first image through a camera selected based on the first image-based zoom factor will be described.

FIG. 12 is a flowchart 1200 illustrating a method of acquiring a first image through a camera selected based on a first image-based zoom factor, according to an embodiment.

FIG. 13 is an example diagram 1300 illustrating a method of acquiring a first image through a camera selected based on a first image-based zoom factor, according to an embodiment.

Referring to FIGS. 12 and 13 , in operation 1201, in one embodiment, the processor 350 may determine whether the current first image-based zoom factor is less than a specified first image-based zoom factor.

In one embodiment, the electronic device 301 may include a first camera having a fixed angle of view and a second camera supporting optical zoom.

In one embodiment, the second camera may be a camera that supports optical zoom by moving the lens in a specified first image-based zoom magnification range. For example, the second camera optically zooms at a first zoom factor based on the specified first image (e.g., 3x (3x)) but less than a second zoom factor (e.g., 10x (10x)) based on the specified first image. It may be a camera that performs.

In one embodiment, the specified first image-based zoom factor may be the minimum zoom factor in the designated first image-based zoom factor range. For example, the specified first image-based zoom factor may be such that the second camera has a first image-based first zoom factor (e.g., 3x) or greater than the first image-based second zoom factor (e.g., 10x (10x)). )), it may be a first zoom magnification (e.g., 3x) based on the first image.

If it is determined in operation 1201 that the current first image-based zoom factor is less than the specified first image-based zoom factor, in operation 1203, the processor 350 selects a first camera among the plurality of cameras to acquire the first image. You can choose a camera for your needs.

At operation 1205, in one embodiment, processor 350 may acquire a first image through a first camera.

In one embodiment, the processor 350 may acquire an image (eg, an image corresponding to the entire field of view area of the first camera) through the first camera. The processor 350 may acquire a first image based on the zoom magnification and first ratio of the camera module within the acquired image. For example, the processor 350 may acquire the first image by cropping the image acquired through the first camera based on the zoom magnification and first ratio of the camera module. Hereinafter, a method of acquiring a first image by cropping an image acquired through a camera (eg, a first camera or a second camera) will be referred to as a “digital zoom method.”

If it is determined in operation 1201 that the current first image-based zoom factor is greater than or equal to the specified first image-based zoom factor, in operation 1207, the processor 350 selects a second camera from among the plurality of cameras to acquire the first image. You can choose a camera for your needs.

At operation 1209, in one embodiment, the processor 350 may acquire the first image through the second camera.

In one embodiment, the processor 350 configures the settings of the second camera (e.g., the position of the lens included in the second camera (e.g., the position to which the lens is to be moved)) of the second camera, based on the zoom magnification and the first ratio of the camera module. ) can be adjusted. For example, the processor 350 may determine the position of the lens included in the second camera (eg, the position to which the lens is to be moved) based on the zoom magnification and the first ratio of the camera module. The processor 350 may move the second camera to the determined position and then acquire the first image through the second camera.

In one embodiment, the processor 350 may acquire the first image using the optical zoom of the second camera when the first image-based zoom magnification falls within the first image-based zoom magnification range of the second camera. . Hereinafter, the method of acquiring the first image using the optical zoom of the second camera will be referred to as the “optical zoom method.” The processor 350 acquires an image at the maximum first image-based zoom factor of the second camera when the first image-based zoom factor is greater than or equal to the maximum zoom factor of the first image-based zoom factor range of the second camera, and The first image can be obtained through a cropping operation within the image. For example, the processor 350 acquires the image at the maximum first image-based zoom factor of the second camera if the first image-based zoom factor is greater than or equal to the maximum zoom factor of the first image-based zoom factor range of the second camera. After that, the first image can be obtained by applying a digital zoom method to the acquired image.

In one embodiment, the first image-based zoom magnification range of the second camera may be 3 times (3x) or more and less than 10 times (10x). When the first image-based zoom magnification is 5x, the processor 350 may acquire the first image using the optical zoom of the second camera. For example, when the first image-based zoom magnification is 5x (5x), the processor 350 adjusts the zoom magnification and the first ratio of the camera module corresponding to the first image-based zoom magnification of 5x (5x). Based on this, the position of the lens included in the second camera (eg, the position to which the lens is to be moved) may be determined. The processor 350 may move the second camera to the determined position and then acquire the first image through the second camera. When the first image-based zoom magnification is 11 times (11x), the processor 350 acquires an image at the position of the lens corresponding to the first image-based zoom magnification of 10 times (10x), and performs the first image-based zoom The first image can be obtained by cropping the obtained image based on the first ratio and the zoom magnification of the camera module whose magnification is 11x (11x).

In one embodiment, Figure 13 includes a first camera having a fixed angle of view and a second camera performing optical zoom in a first image-based zoom magnification range of 3x (3x) to 10x (10x). In the electronic device 301, when the zoom magnification of the camera module is increased, this may be an example to explain a method of acquiring the first image based on the size of the movement of the electronic device 301.

In one embodiment, reference numeral 1301 in FIG. 13 may indicate a method of acquiring the first image as the zoom magnification of the camera module increases when the magnitude of the movement of the electronic device 301 is less than or equal to the first threshold. . For example, when the zoom magnification of the camera module increases as shown by the arrow 1310, the processor 350 performs the first 1 The first image can be acquired through a camera. The processor 350 configures the first 1-2 section 1312 in which the zoom magnification range of the camera module is greater than 3x (3x) and less than or equal to 10x (10x) (e.g., the first image-based zoom magnification range is 3x (3x). ) and 10 times (10x) or less), the first image can be acquired using optical zoom through the second camera. The processor 350 performs a 1-3 section 1313 in which the zoom magnification range of the camera module exceeds 10 times (10x) (e.g., a section in which the first image-based zoom magnification range exceeds 10 times (10x)) In, the first image can be acquired using a digital zoom method through the second camera.

In one embodiment, reference numeral 1302 in FIG. 13 indicates that the magnitude of the movement of the electronic device 301 exceeds the first threshold and is below the second threshold and corresponds to three times (3x) the size of the camera module 310. When determining the first ratio using a ratio (e.g., determining the first ratio through operation 907 of FIG. 9), it may indicate a method of acquiring the first image according to an increase in the zoom magnification of the camera module. there is. For example, when the zoom magnification of the camera module increases as shown by the arrow 1320, the processor 350 performs the first 1 The first image can be acquired through a camera. The processor 350 operates in a 2-2 section 1322 in which the zoom magnification range of the camera module exceeds 3 times (3x) (e.g., a section in which the first image-based zoom magnification range exceeds 3 times (3x)) In , the first image may be acquired using an optical zoom method through the second camera.

In one embodiment, reference numeral 1303 in FIG. 13 indicates that the magnitude of the movement of the electronic device 301 exceeds the second threshold and uses a first ratio corresponding to twice (2x) that of the camera module 310. 1 When determining the ratio (e.g., determining the first ratio through operation 909 of FIG. 9), a method of acquiring the first image may be indicated according to an increase in the zoom factor of the camera module. For example, when the zoom magnification of the camera module increases as shown by the arrow 1330, the processor 350 selects the 3-1 section 1331 (e.g. : In the section where the first image-based zoom magnification range is 3x (3x) or less), the first image can be acquired through the first camera. The processor 350 operates in a 3-2 section 1332 in which the zoom magnification range of the camera module exceeds 3.4x (3.4x) (e.g., a section in which the first image-based zoom magnification range exceeds 3x (3x)) ), the first image can be acquired using an optical zoom method through the second camera.

Referring back to FIG. 4 , in operation 409, in one embodiment, the processor 350 may acquire a second image by correcting camera shake based on the first image.

In one embodiment, processor 350, based on the first image. A second image can be acquired by correcting camera shake using optical image stabilization or electronic image stabilization.

In one embodiment, the processor 350 may acquire the second image by correcting camera shake for the first image based on the size and direction of movement of the electronic device 301. For example, the processor 350 may calculate a vector that has a direction opposite to the direction of movement of the electronic device 301 and corresponds to the magnitude of the movement of the electronic device 301. The processor 350 may obtain, as a second image, an area located in a position moved by the calculated vector within the first image and having the same size as the first area.

In one embodiment, the processor 350 acquires a second image with camera shake corrected and then performs an operation to improve image quality (e.g., resolution) on the second image using a video super resolution method. You can.

Although not shown in FIGS. 4 to 13 , in one embodiment, the processor 350 may display the second image through the display module 310 . In one embodiment, the second image may include a preview image. However, the present invention is not limited thereto, and the second image may include a still image obtained based on user input while displaying the preview image.

In one embodiment, in the examples described above, the processor 350 obtains a first image by cropping an image acquired through a camera (e.g., a first camera or a second camera), and uses the acquired first image. Thus, a digital zoom method that compensates for camera shake is exemplified, but it is not limited to this. For example, the processor 350 may control a camera (eg, a first camera or a second camera) to acquire an image with a fixed angle of view and correct camera shake using the acquired image. The processor 350 may use a digital zoom method to obtain a second image by cropping an image in which camera shake has been corrected based on the zoom magnification and first ratio of the camera module.

Figure 14 shows the first ratio determined by increasing the zoom magnification of the camera module when determining the first ratio using the first ratio corresponding to 3 times that of the camera module 310, according to one embodiment. This is an example graph (1400).

Figure 15 shows the first ratio determined by increasing the zoom magnification of the camera module when determining the first ratio using the first ratio corresponding to twice that of the camera module 310, according to one embodiment. This is an example graph (1500).

Referring to FIGS. 14 and 15, in one embodiment, FIG. 14 shows a case where the first ratio is determined using the first ratio corresponding to the zoom magnification of the camera module 3 times (e.g., using the example of FIG. 8) (when determining the first ratio), the first ratio may be indicated as the zoom magnification of the camera module increases. For example, in Figure 14, the X-axis may represent the zoom magnification of the camera module, and the Y-axis may represent the first ratio. In one embodiment, the processor 350, like line 1411, fixes the zoom ratio in a section where the zoom magnification range of the camera module is 3x (3x) or less (e.g., the 2-1 section 1321 of FIG. 13). The ratio (e.g. 20%) can be determined as the first ratio. The processor 350, as shown in line 1421, zooms the camera module in a section where the zoom magnification range of the camera module exceeds 3x (e.g., the 2-2 section 1322 of FIG. 13). The first ratio can be determined using the first ratio corresponding to 3 times the magnification. In this case, the first ratio may be increased by increasing the zoom factor of the camera module, as shown in line 1421.

In one embodiment, FIG. 14 shows a case where the first ratio is determined using the first ratio corresponding to twice the camera module 310 (e.g., when the first ratio is determined using the example of FIG. 10 ), may represent the first ratio according to an increase in the zoom magnification of the camera module. For example, in Figure 15, the X-axis may represent the zoom magnification of the camera module, and the Y-axis may represent the first ratio. In one embodiment, the processor 350, like line 1511, performs a fixed operation in a section where the zoom magnification range of the camera module is 2x (2x) or less (e.g., the 3-1 section 1331 of FIG. 13). The ratio (e.g. 20%) can be determined as the first ratio. The processor 350, as shown in line 1521, zooms the camera module in a section where the zoom magnification range of the camera module exceeds 2x (e.g., the 3-2 section 1332 of FIG. 13). The first ratio can be determined using the first ratio corresponding to 2 times the magnification. In this case, the first ratio may be increased by increasing the zoom factor of the camera module, as shown in line 1521.

In one embodiment, when the magnitude of the movement of the electronic device 301 exceeds the first threshold and is below the second threshold, the processor 350 moves the first motion corresponding to 3 times that of the camera module 310, as shown in FIG. 14. The first ratio can be determined using the ratio of 1. When the magnitude of movement of the electronic device 301 exceeds the second threshold, the processor 350 sets the first ratio using the first ratio corresponding to twice that of the camera module 310, as shown in FIG. 15. You can decide.

In one embodiment, comparing the graph of FIG. 14 and the graph of FIG. 15, the processor 350 determines the first ratio so that when the magnitude of movement of the electronic device 301 is larger, the first ratio has a larger ratio. The ratio can be determined. The processor 350 may determine the first ratio so that the first ratio increases at a lower zoom magnification of the camera module when the magnitude of the movement of the electronic device 301 is larger.

In one embodiment, as shown in FIGS. 14 and 15, the processor 350 determines a fixed ratio (e.g., 20%) in the first section as the first ratio, and the camera module in the second section The first ratio may be determined such that the first ratio increases as the zoom magnification increases. However, it is not limited to this. For example, the processor 350 may determine the first ratio so that the first ratio increases in all sections of the camera module 310 by increasing the zoom magnification of the camera module.

In one embodiment, as shown in FIGS. 14 and 15, the processor 350 increases the speed at which the first ratio increases (e.g., the slope of the first ratio) by increasing the zoom magnification of the camera module in the second section. The first ratio can be determined such that is reduced. However, the present invention is not limited thereto, and the processor 350 may determine the first ratio such that the speed at which the first ratio increases due to an increase in the zoom magnification of the camera module in the second section is maintained at a constant value or increased.

FIG. 16 is an example diagram 1600 illustrating a change in the first image-based zoom factor according to a change in the zoom factor of the camera module, according to an embodiment.

Referring to Figure 16, in one embodiment, Figure 16 determines the first ratio using a first ratio corresponding to the zoom magnification of the camera module 3x (3x), which corresponds to a change in the zoom magnification of the camera module. In this case, the first ratio is determined using the first image-based zoom magnification of the second camera (the first image-based first zoom magnification in FIG. 16) and the first ratio corresponding to the zoom magnification 3x (3x) of the camera module. In this case, it may be a table illustrating the first image-based zoom magnification of the second camera (the first image-based second zoom magnification in FIG. 16).

In one embodiment, the first image-based first zoom magnification and the second image-based second zoom magnification corresponding to the zoom magnification of the camera module are calculated using the above-described [Equation 3] and [Equation 4] It can be.

In one embodiment, in FIG. 16, the first image-based first zoom magnification and the first image-based second zoom magnification are a second camera that supports optical zoom at a first image-based zoom magnification of 3 times or more and 10 times or less. The first image-based zoom factors may be related to: In one embodiment, in FIG. 16, the first ratio (e.g., m in Equation 3) determined when the zoom magnification of the camera module is less than or equal to the specified zoom magnification may be assumed to be 20%.

In one embodiment, when the processor 350 determines the first ratio using the first ratio corresponding to the zoom magnification 3x (3x) of the camera module, the first zoom magnification based on the first image is 3x (3x). In a section less than 3x), the first image can be acquired through the first camera. In one embodiment, when the first ratio is determined using the first ratio corresponding to the zoom magnification of the camera module 3x (3x), the second camera has a first zoom ratio of less than 3x (3x) based on the first image. It can be deactivated in a section. For example, in Figure 16, the first zoom ratio 1.0x (1621) based on the first image corresponding to the zoom ratio 1x (1x) 1611 of the camera module and the zoom ratio 2x (2x) 1612 of the camera module, respectively. ) and the first zoom ratio 1.0x (1622) based on the first image may indicate that the second camera is in a deactivated state.

In one embodiment, when the processor 350 determines the first ratio using the first ratio corresponding to the zoom magnification of the camera module 3x (3x) (e.g., 3x (1613)), the processor 350 determines the first ratio based on the first image. In a section where the first zoom magnification is 3x (3.0x) (1623) or more, the first image can be acquired through the second camera. In one embodiment, when the processor 350 determines the first ratio using the first ratio corresponding to the zoom magnification 3x (3x) of the camera module, the first zoom magnification based on the first image is 3x (3x). In the section above 3.0x)(1623) and below 10x (10.0x)(1625) corresponding to the zoom ratio of the camera module of 24x(1615), the first image is acquired through the second camera using an optical zoom method. can do. In one embodiment, when the processor 350 determines the first ratio using the first ratio corresponding to the zoom magnification of the camera module 3x (3x), the first zoom magnification based on the first image is 10x ( In a section exceeding 10.0x) (1625), the first image can be acquired through the second camera using a digital zoom method.

In one embodiment, when the processor 350 determines the first ratio using the first ratio corresponding to the zoom magnification 2x (2x) of the camera module, the second zoom magnification based on the first image is 2x (2x). In a section less than 2x), the first image can be acquired through the first camera. In one embodiment, when the first ratio is determined using the first ratio corresponding to the zoom magnification of the camera module 2x (2x), the second camera has a second zoom ratio of less than 2x (2x) based on the first image. It can be deactivated in a section. For example, in Figure 16, the second zoom factor is 1.0 based on the first image, respectively corresponding to the zoom factor 1x (1611) of the camera module, the zoom factor 2x (1612) of the camera module, and the zoom factor 3x (1613) of the camera module. x (1631), a second zoom ratio of 1.0x (1632) based on the first image, and a second zoom ratio of 1.0x (1633) based on the first image may indicate that the second camera is in a deactivated state.

In one embodiment, when the processor 350 determines the first ratio using the first ratio corresponding to the zoom magnification of the camera module 2x (2x) (e.g., 2x (1612)), the processor 350 determines the first ratio based on the first image. In a section where the second zoom magnification is 3x (3.0x) (1634) or more (e.g., a section where the zoom magnification of the camera module is about 3.4x (1614) or more), the first image can be acquired through the second camera. In one embodiment, when the processor 350 determines the first ratio using the first ratio corresponding to the zoom magnification of the camera module 2x (2x), the second zoom magnification based on the first image is 3x ( In the range of 3.0x) (1634) or more and 10x (10.0x) or less corresponding to the zoom magnification of the camera module of about 30x, the first image can be acquired through the second camera using an optical zoom method. In one embodiment, when the processor 350 determines the first ratio using the first ratio corresponding to the zoom magnification 2x (2x) of the camera module, the second zoom magnification based on the first image is 10x. In the exceeding section, the first image can be acquired through the second camera using a digital zoom method.

In one embodiment, a method for correcting camera shake in the electronic device 101 may include checking the zoom magnification of the camera module 310 of the electronic device 101. The method may include checking the magnitude of movement of the electronic device 101. The method corresponds to the size of the second image obtained by correcting the camera shake within the first image to the first image acquired to correct camera shake, based on the zoom factor and the magnitude of the movement. and determining a first ratio of the second area excluding the first area having a size of . The method may include acquiring the first image based on the zoom magnification and the first ratio. The method may include acquiring the second image by correcting the camera shake based on the first image.

In one embodiment, the operation of determining the first rate includes: determining a fixed rate as the first rate if the magnitude of the movement is less than or equal to the threshold; and if the magnitude of the movement exceeds the threshold, the operation of determining the first rate. It may include determining the first ratio so that the first ratio increases by increasing the zoom magnification of the camera module 310.

In one embodiment, the operation of determining the first ratio includes, if the zoom magnification of the camera module 310 is less than or equal to a specified zoom magnification, determining the fixed ratio as the first ratio and the camera module ( If the zoom magnification of 310) exceeds the specified zoom magnification, the first ratio may be increased by increasing the zoom magnification of the camera module 310. It may include an operation of determining the first ratio. .

In one embodiment, the operation of determining the first ratio includes, if the zoom factor of the camera module 310 exceeds the specified zoom factor, the zoom factor of the camera module 310 equal to the specified zoom factor. The method may include determining the first ratio using a field of view area corresponding to the second area determined.

In one embodiment, the threshold includes a first threshold and a second threshold greater than the first threshold, the specified zoom factor includes a specified first zoom factor and a specified second zoom factor, and the first ratio is The determining operation includes determining the fixed ratio as the first ratio when the magnitude of the movement is less than or equal to the first threshold, and when the magnitude of the motion exceeds the first threshold and is less than or equal to the second threshold: If the zoom magnification of the camera module 310 is less than or equal to the designated first zoom magnification, an operation of determining the fixed ratio as the first ratio and the zoom magnification of the camera module 310 is the designated first zoom. If the magnification is exceeded, determining the first ratio using a field of view area corresponding to the second area determined at the zoom magnification of the camera module 310 that is equal to the specified first zoom magnification, and When the magnitude of the movement exceeds the second threshold: If the zoom magnification of the camera module 310 is less than or equal to the specified second zoom magnification, determining the fixed ratio as the first ratio and the camera module If the zoom magnification of 310 exceeds the specified second zoom magnification, using the field of view area corresponding to the second area determined at the zoom magnification of the camera module 310, which is equal to the specified second zoom magnification. Thus, an operation of determining the first ratio may be included.

In one embodiment, the camera module 310 includes a first camera having a fixed angle of view and a second camera supporting optical zoom, and the operation of acquiring the first image is performed using the camera module 310. An operation of selecting a camera for acquiring the first image from among the first camera and the second camera based on a first image-based zoom factor that corresponds to the zoom factor and is based on the first image. You can.

In one embodiment, the operation of selecting a camera for acquiring the first image includes checking whether the first image-based zoom factor is less than a specified first image-based zoom factor, the first image-based zoom factor When it is confirmed that this is less than the specified first image-based zoom magnification, selecting the first camera among the first camera and the second camera as a camera for acquiring the first image, and the first image-based zoom When the magnification is less than or equal to the designated first image-based zoom magnification, the method may include selecting the second camera among the first camera and the second camera as a camera for acquiring the first image.

In one embodiment, the operation of acquiring the first image includes, when the first camera is selected as a camera for acquiring the first image, acquiring an image through the first camera and the camera module 310 ) may include obtaining the first image by cropping the acquired image based on the zoom magnification and the first ratio.

In one embodiment, the operation of acquiring the first image is based on the zoom magnification and the first ratio of the camera module 310 when the second camera is selected as the camera for acquiring the first image. This may include an operation of adjusting the settings of the second camera and then acquiring the first image through the second camera.

In one embodiment, the operation of acquiring the second image includes acquiring the second image by correcting the camera shake using optical image stabilization or electronic image stabilization based on the first image. It can be included.

Additionally, the data structure used in the above-described embodiments of this document can be recorded on a computer-readable recording medium through various means. The computer-readable recording media includes storage media such as magnetic storage media (eg, ROM, floppy disk, hard disk, etc.) and optical read media (eg, CD-ROM, DVD, etc.).

Claims

In the electronic device 301,

Camera module 310; and

Comprising at least one processor 350 operatively connected to the camera module 310,

The at least one processor 350,

Check the zoom magnification of the camera module 310,

Check the magnitude of movement of the electronic device 101,

Based on the zoom magnification and the size of the movement, a size corresponding to the size of the second image obtained by correcting the camera shake within the first image for the first image obtained to correct camera shake Determine the first ratio of the second area excluding the first area with

Acquire the first image based on the zoom magnification and the first ratio, and

An electronic device (101) configured to acquire the second image by correcting the camera shake based on the first image.
According to claim 1,

The at least one processor 350,

If the magnitude of the movement is below the threshold, determine a fixed rate as the first rate, and

The electronic device (101) configured to determine the first ratio such that, when the magnitude of the movement exceeds the threshold, the first ratio increases by increasing the zoom magnification of the camera module.
The method of claim 1 or 2,

The at least one processor 350,

If the magnitude of the movement exceeds the threshold:

If the zoom magnification of the camera module 310 is less than or equal to the specified zoom magnification, the fixed ratio is determined as the first ratio, and

Electronic configured to determine the first ratio, such that when the zoom magnification of the camera module 310 exceeds the specified zoom magnification, the first ratio increases by increasing the zoom magnification of the camera module 310 Device 101.
The method according to any one of claims 1 to 3,

The at least one processor 350,

If the zoom magnification of the camera module 310 exceeds the specified zoom magnification, using the field of view area corresponding to the second area determined at the zoom magnification of the camera module 310 that is equal to the specified zoom magnification , an electronic device (101) configured to determine the first ratio.
The method according to any one of claims 1 to 4,

wherein the threshold includes a first threshold and a second threshold that is greater than the first threshold,

The specified zoom factor includes a designated first zoom factor and a designated second zoom factor,

The at least one processor 350,

If the magnitude of the movement is less than or equal to the first threshold, determine the fixed rate as the first rate,

If the magnitude of the movement exceeds the first threshold and is below the second threshold:

If the zoom magnification of the camera module 310 is less than or equal to the specified first zoom magnification, determine the fixed ratio as the first ratio, and

If the zoom magnification of the camera module 310 exceeds the specified first zoom magnification, the angle of view corresponding to the second area determined at the zoom magnification of the camera module 310 equal to the specified first zoom magnification Using the area, determine the first ratio, and

If the magnitude of the movement exceeds the second threshold:

If the zoom magnification of the camera module 310 is less than or equal to the specified second zoom magnification, the fixed ratio is determined as the first ratio, and

If the zoom magnification of the camera module 310 exceeds the specified second zoom magnification, the angle of view corresponding to the second area determined at the zoom magnification of the camera module 310 equal to the specified second zoom magnification An electronic device (101) configured to determine the first ratio using an area.
The method according to any one of claims 1 to 5,

The camera module 310 includes a first camera having a fixed angle of view and a second camera supporting optical zoom,

The at least one processor 350,

A camera for acquiring the first image among the first camera and the second camera based on a first image-based zoom factor that corresponds to the zoom factor of the camera module 310 and is based on the first image An electronic device 101 configured to select.
The method according to any one of claims 1 to 6,

The at least one processor 350,

Check whether the first image-based zoom factor is less than a specified first image-based zoom factor,

When it is confirmed that the first image-based zoom factor is less than the specified first image-based zoom factor, selecting the first camera among the first camera and the second camera as a camera for acquiring the first image, and

An electronic device configured to select the second camera among the first camera and the second camera as a camera for acquiring the first image when the first image-based zoom factor is less than or equal to the specified first image-based zoom factor. (101).
The method according to any one of claims 1 to 7,

The at least one processor 350,

When the first camera is selected as a camera for acquiring the first image, an image is acquired through the first camera, and

The electronic device 101 configured to acquire the first image by cropping the acquired image based on the zoom magnification and the first ratio of the camera module 310.
The method according to any one of claims 1 to 8,

The at least one processor 350,

When the second camera is selected as the camera for acquiring the first image, after adjusting the settings of the second camera based on the zoom magnification and the first ratio of the camera module 310, the second camera An electronic device (101) configured to acquire the first image through a camera.
The method according to any one of claims 1 to 9,

The at least one processor 350,

An electronic device (101) configured to obtain the second image by correcting the camera shake using optical image stabilization or electronic image stabilization based on the first image.
In a method for correcting camera shake in the electronic device 101,

An operation of checking the zoom magnification of the camera module 310 of the electronic device 101;

An operation to check the magnitude of movement of the electronic device 101;

Based on the zoom magnification and the size of the movement, a size corresponding to the size of the second image obtained by correcting the camera shake within the first image for the first image obtained to correct camera shake determining a first ratio of a second area excluding a first area having an area;

acquiring the first image based on the zoom magnification and the first ratio; and

A method comprising acquiring the second image by correcting the camera shake based on the first image.
According to claim 11,

The operation of determining the first ratio is,

If the magnitude of the movement is less than or equal to a threshold, determining a fixed rate as the first rate; and

A method comprising determining the first ratio so that, when the magnitude of the movement exceeds the threshold, the first ratio increases by increasing the zoom magnification of the camera module 310.
The method of claim 11 or 12,

The operation of determining the first ratio is,

If the zoom magnification of the camera module 310 is less than or equal to a specified zoom magnification, determining the fixed ratio as the first ratio; and

An operation of determining the first ratio so that when the zoom magnification of the camera module 310 exceeds the specified zoom magnification, the first ratio increases by increasing the zoom magnification of the camera module 310 How to include it.
The method according to any one of claims 11 to 13,

The operation of determining the first ratio is,

If the zoom magnification of the camera module 310 exceeds the specified zoom magnification, using the field of view area corresponding to the second area determined at the zoom magnification of the camera module 310 that is equal to the specified zoom magnification , a method comprising determining the first ratio.
The method according to any one of claims 11 to 14,

wherein the threshold includes a first threshold and a second threshold that is greater than the first threshold,

The specified zoom factor includes a designated first zoom factor and a designated second zoom factor,

The operation of determining the first ratio is,

If the magnitude of the movement is less than or equal to the first threshold, determining the fixed rate as the first rate;

If the magnitude of the movement exceeds the first threshold and is below the second threshold:

If the zoom magnification of the camera module 310 is less than or equal to the designated first zoom magnification, determining the fixed ratio as the first ratio; and

If the zoom magnification of the camera module 310 exceeds the specified first zoom magnification, the angle of view corresponding to the second area determined at the zoom magnification of the camera module 310 equal to the specified first zoom magnification determining the first ratio using an area; and

If the magnitude of the movement exceeds the second threshold:

If the zoom magnification of the camera module 310 is less than or equal to the specified second zoom magnification, determining the fixed ratio as the first ratio; and

If the zoom magnification of the camera module 310 exceeds the specified second zoom magnification, the angle of view corresponding to the second area determined at the zoom magnification of the camera module 310 equal to the specified second zoom magnification A method comprising determining the first ratio using an area.