KR102653336B1 - An electronic device and control method therof - Google Patents

Abstract

An electronic device and a method for controlling the same are disclosed. An electronic device according to various embodiments of the present disclosure includes a display unit and a processor, wherein the processor includes a camera that includes image information captured by an external photographing device and information related to a photographing posture of the external photographing device. Obtain information, generate an image to be displayed on the electronic device using the acquired image information, correct the generated image using the obtained camera information, and display the corrected image on the display unit. You can control it to do so.

Description

Electronic device and its control method {AN ELECTRONIC DEVICE AND CONTROL METHOD THEROF}

This disclosure relates to electronic devices and their control methods.

Recently, with the rapid spread of portable electronic devices such as smartphones, the spread of external electronic devices that are connected to the portable electronic devices through wired or wireless communication and provide various functions to users is also increasing.

As the external electronic device, high-performance external imaging devices have been actively introduced in recent years. For example, an imaging device capable of 360-degree imaging can capture images in a plurality of different directions. The imaging device may capture a plurality of images in different directions and then combine (stitch) the captured images to generate one omni-directional image. The imaging device may transmit the generated omnidirectional image to an electronic device that can use the omnidirectional image, for example, a personal computer or a smartphone. An electronic device connected to a photographing device may provide a virtual reality (VR) service using received omnidirectional images. For example, the electronic device may be implemented as a Head Mounted Display (HMD) or may be combined with an HMD, and may display some areas of the omnidirectional image depending on the direction of the user's gaze.

Recently, as interest in virtual reality (VR) has increased, the development and distribution of various external electronic devices (e.g., Gear 360™, Gear VR™, etc.) that can provide the virtual reality functions/operations have been increasing. It is expanding rapidly.

External electronic devices that are connected to portable electronic devices such as smartphones to provide omnidirectional images for virtual reality services (e.g., a filming device that can capture a 360-degree screen, etc.) are generally used for virtual reality services. It is used to capture omnidirectional images to provide background images. Electronic devices such as smartphones and PCs that receive images captured from an external imaging device that captures omnidirectional images process the images by performing post-processing based on the captured images. The processed video is later played for virtual reality services, etc.

Meanwhile, there is a need to output currently captured images in real time, including virtual reality services, but the existing omnidirectional video capture and output method lacks consideration for outputting captured images in real time to other electronic devices. do. In particular, there may be shaking in the captured image due to various factors, such as the shooting device that shoots omnidirectional images may be installed on various moving objects such as the human body, vehicles, airplanes, drones, etc., or the installation environment may change. . Accordingly, a method for processing and displaying shaken images in real time is required.

In response to this demand, according to the electronic device according to various embodiments of this document, the image acquired by the external electronic device is corrected in real time and displayed on the electronic device, thereby providing the user with a stable screen without shaking. It can be.

In particular, according to the electronic device according to at least some of the various embodiments of this document, when the image acquired by the external photographing device is corrected in real time and displayed on the electronic device, if it is an omnidirectional image, the user's It provides the desired partial view area, i.e. FOV (Field Of View), without wavering.

In addition, according to the electronic device according to various embodiments of this document, the distortion of the capturing axis of the images acquired by a plurality of cameras in the external electronic device is corrected and combined (stitched) to provide better quality omnidirectional images to the user. Wide-angle images such as video can be provided.

An electronic device according to various embodiments of the present document includes a display unit and a processor, wherein the processor includes a camera that includes image information captured by an external photographing device and information related to a photographing posture of the external photographing device. Obtain information, generate an image to be displayed on the electronic device using the acquired image information, correct the generated image using the obtained camera information, and display the corrected image on the display unit. You can control it to do so.

In a method for controlling an electronic device according to various embodiments of the present document, the operation of acquiring camera information including image information captured by an external photographing device and information related to a photographing posture of the external photographing device, the acquisition It may include generating an image to be displayed on the electronic device using the obtained image information, correcting the generated image using the obtained camera information, and displaying the corrected image. .

According to various embodiments of this document, the image acquired by the external electronic device is corrected in real time and displayed on the electronic device, so that a stable screen without shaking can be provided to the user. In particular, in at least some embodiments, in the case of an omnidirectional image, the user's desired view area, that is, Field of View (FOV), can be provided without shaking. In addition, by correcting the distortion of the capturing axis of images acquired by a plurality of cameras and combining them, it is possible to provide omnidirectional images of better quality.

The effects of this document are not limited to the effects described above, and it is obvious to those skilled in the art that various effects are inherent in this specification.

FIG. 1 is an example diagram for explaining an electronic device in a network environment according to various embodiments of this document.
Figure 2 is a block diagram for explaining an electronic device according to various embodiments of this document.
Figure 3 is a block diagram of a program module according to various embodiments.
FIGS. 4A and 4B show conceptual diagrams for explaining an electronic device and an external imaging device according to various embodiments of this document.
FIG. 5 shows blocks of an electronic device and an external imaging device according to various embodiments of the present document.
FIG. 6 is a diagram illustrating a data processing flow in an external imaging device according to various embodiments of this document.
FIG. 7 is an example diagram for explaining an image generated by an image merging and stitching function/operation performed by an electronic device and an external imaging device according to various embodiments of this document.
FIG. 8 is an example diagram for explaining changes in pitch angle, roll angle, and yaw angle in an external imaging device according to various embodiments of this document.
FIGS. 9A and 9B are exemplary diagrams illustrating a process in which an image is corrected using unique shooting characteristic information for a plurality of cameras transmitted from an external imaging device in an electronic device according to various embodiments of the present document. .
FIGS. 10A and 10B are example diagrams for explaining images that can be displayed on an electronic device when the posture of an external imaging device changes according to various embodiments of this document.
FIGS. 11A and 11B are example diagrams for explaining the display of a user view area among omnidirectional images that can be displayed in an electronic device according to various embodiments of this document.
FIGS. 12A, 12B, and 12C illustrate correcting a user's desired view area among omnidirectional images that can be displayed in an electronic device according to various embodiments of this document using shooting posture information transmitted from an external shooting device. This is an example drawing for the following.
FIG. 13 is an example diagram for explaining a communication procedure between an electronic device and an external imaging device according to various embodiments of this document.
FIG. 14 is an example diagram for explaining the operation flow in an electronic device and an external imaging device according to various embodiments of this document.
15A and 15B are example diagrams for explaining the format of a file transmitted to an electronic device by an external photographing device according to various embodiments of this document.
FIGS. 16A and 16B are example diagrams for explaining stream file formats of video, audio, and camera information transmitted to an electronic device by an external photographing device according to various embodiments of this document.
FIG. 17 is an example diagram for explaining a control method of an electronic device according to various embodiments of this document.

Hereinafter, various embodiments of this document are described with reference to the attached drawings. However, this is not intended to limit the technology described in this document to specific embodiments, and should be understood to include various modifications, equivalents, and/or alternatives to the embodiments of this document. . In connection with the description of the drawings, similar reference numbers may be used for similar components.

In this document, expressions such as “have,” “may have,” “includes,” or “may include” refer to the existence of the corresponding feature (e.g., a numerical value, function, operation, or component such as a part). , and does not rule out the existence of additional features.

In this document, expressions such as “A or B,” “at least one of A or/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together. . For example, “A or B”, “at least one of A and B”, or “at least one of A or B” (1) includes at least one A, (2) includes at least one B, or (3) it may refer to all cases including both at least one A and at least one B.

As used herein, expressions such as "first", "second", "first", or "second" may describe various elements in any order and/or importance, and refer to one element in relation to another. It is only used to distinguish from components and does not limit the components. For example, a first user device and a second user device may represent different user devices regardless of order or importance. For example, a first component may be renamed a second component without departing from the scope of rights described in this document, and similarly, the second component may also be renamed to the first component.

A component (e.g., a first component) is “(operatively or communicatively) coupled with/to” another component (e.g., a second component). When referred to as being “connected to,” it should be understood that any component may be directly connected to the other component or may be connected through another component (e.g., a third component). On the other hand, when a component (e.g., a first component) is said to be “directly connected” or “directly connected” to another component (e.g., a second component), the component and the It may be understood that no other component (e.g., a third component) exists between other components.

The expression “configured to” used in this document may mean, for example, “suitable for,” “having the capacity to,” or “having the capacity to.” It can be used interchangeably with ", "designed to," "adapted to," "made to," or "capable of." The term “configured (or set to)” may not necessarily mean “specifically designed to” in hardware. Instead, in some contexts, the expression “a device configured to” may mean that the device is “capable of” working with other devices or components. For example, the phrase "processor configured (or set) to perform A, B, and C" refers to a processor dedicated to performing the operations (e.g., an embedded processor), or by executing one or more software programs stored on a memory device. , may refer to a general-purpose processor (e.g., CPU or application processor) capable of performing the corresponding operations.

Terms used in this document are merely used to describe specific embodiments and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions, unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field described in this document. Among the terms used in this document, terms defined in general dictionaries may be interpreted to have the same or similar meaning as the meaning they have in the context of related technology, and unless clearly defined in this document, have an ideal or excessively formal meaning. It is not interpreted as In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of this document.

Electronic devices according to various embodiments of this document include, for example, a smartphone, a tablet personal computer, a mobile phone, a video phone, and an e-book reader. , desktop PC (desktop personal computer), laptop PC (laptop personal computer), netbook computer, workstation, server, PDA (personal digital assistant), PMP (portable multimedia player), MP3 player, mobile It may include at least one of a medical device, a camera, or a wearable device. According to various embodiments, the wearable device may be in the form of an accessory (e.g., a watch, ring, bracelet, anklet, necklace, glasses, contact lenses, or head-mounted-device (HMD)), or integrated into fabric or clothing ( It may include at least one of a body-attached type (e.g., an electronic garment), a body-attachable type (e.g., a skin pad or a tattoo), or a bioimplantable type (e.g., an implantable circuit).

In some embodiments, the electronic device may be a home appliance. Home appliances include, for example, televisions, DVD (digital video disk) players, stereos, refrigerators, air conditioners, vacuum cleaners, ovens, microwave ovens, washing machines, air purifiers, set-top boxes, and home automation control panels ( home automation control panel), security control panel, TV box (e.g. Samsung HomeSync ^TM , Apple TV ^TM , or Google TV ^TM ), game console (e.g. Xbox ^TM , PlayStation ^TM ), electronic dictionary, electronic dictionary It may include at least one of a key, a camcorder, or an electronic picture frame.

In another embodiment, the electronic device may include various medical devices (e.g., various portable medical measurement devices (such as blood sugar monitors, heart rate monitors, blood pressure monitors, or body temperature monitors), magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), CT (computed tomography), imaging device, or ultrasonic device, etc.), navigation device, satellite navigation system (GNSS (global navigation satellite system)), EDR (event data recorder), FDR (flight data recorder), automobile infotainment ) devices, marine electronic equipment (e.g. marine navigation devices, gyro compasses, etc.), avionics, security devices, vehicle head units, industrial or household robots, and ATMs (automatic teller's machines) in financial institutions. , point of sales (POS) at a store, or internet of things (e.g. light bulbs, various sensors, electric or gas meters, sprinkler systems, smoke alarms, thermostats, street lights, toasters) , exercise equipment, hot water tank, heater, boiler, etc.).

According to some embodiments, the electronic device may be a piece of furniture or part of a building/structure, an electronic board, an electronic signature receiving device, a projector, or various measuring devices (e.g., It may include at least one of water, electricity, gas, or radio wave measuring devices, etc.). In various embodiments, the electronic device may be one or a combination of more than one of the various devices described above. An electronic device according to some embodiments may be a flexible electronic device. Additionally, electronic devices according to embodiments of this document are not limited to the above-mentioned devices and may include new electronic devices according to technological developments.

Hereinafter, electronic devices according to various embodiments will be described with reference to the accompanying drawings. In this document, the term user may refer to a person using an electronic device or a device (e.g., an artificial intelligence electronic device) using an electronic device.

1, an electronic device 101 within a network environment 100, in various embodiments, is described. The electronic device 101 may include a bus 110, a processor 120, a memory 130, an input/output interface 150, a display 160, and a communication interface 170. In some embodiments, the electronic device 101 may omit at least one of the components or may additionally include another component.

Bus 110 may include, for example, circuitry that connects components 120 - 170 to each other and transfers communications (e.g., control messages and/or data) between the components.

The processor 120 may include one or more of a central processing unit (CPU), an application processor (AP), or a communication processor (CP). The processor 120 may, for example, perform operations or data processing related to control and/or communication of at least one other component of the electronic device 101.

The processor 120 acquires camera information including image information transmitted from another external electronic device (e.g., electronic device 102) and information related to the shooting posture when shooting the image, and obtains the obtained image information. And the image to be displayed on the electronic device can be corrected using camera information, and the corrected image can be controlled to be displayed on the display 160.

Memory 130 may include volatile and/or non-volatile memory. For example, the memory 130 may store commands or data related to at least one other component of the electronic device 101. According to one embodiment, memory 130 may store software and/or program 140. The program 140 may include, for example, a kernel 141, middleware 143, an application programming interface (API) 145, and/or an application program (or “application”) 147, etc. may include. At least a portion of the kernel 141, middleware 143, or API 145 may be referred to as an operating system (OS).

Kernel 141 may, for example, provide system resources (e.g., middleware 143, API 145, or application program 147) used to execute operations or functions implemented in other programs (e.g., : Bus 110, processor 120, or memory 130, etc.) can be controlled or managed. In addition, the kernel 141 provides an interface for controlling or managing system resources by accessing individual components of the electronic device 101 in the middleware 143, API 145, or application program 147. You can.

The middleware 143 may, for example, perform an intermediary role so that the API 145 or the application program 147 can communicate with the kernel 141 to exchange data.

Additionally, the middleware 143 may process one or more work requests received from the application program 147 according to priority. For example, the middleware 143 may use system resources (e.g., bus 110, processor 120, or memory 130, etc.) of the electronic device 101 for at least one of the application programs 147. Priority can be given. For example, the middleware 143 may perform scheduling or load balancing for the one or more work requests by processing the one or more work requests according to the priority assigned to the at least one work request.

The API 145 is, for example, an interface for the application 147 to control functions provided by the kernel 141 or middleware 143, for example, file control, window control, image processing, or text It may include at least one interface or function (e.g., command) for control, etc.

For example, the input/output interface 150 may serve as an interface that can transmit commands or data input from a user or another external device to other component(s) of the electronic device 101. Additionally, the input/output interface 150 may output commands or data received from other component(s) of the electronic device 101 to the user or other external device.

Display 160 may be, for example, a liquid crystal display (LCD), a light-emitting diode (LED) display, an organic light-emitting diode (OLED) display, or It may include a micro-electro-mechanical systems (MEMS) display, or an electronic paper display. For example, the display 160 may display various contents (e.g., text, images, videos, icons, or symbols) to the user. The display 160 may include a touch screen and may receive, for example, a touch, gesture, proximity, or hovering input using an electronic pen or a part of the user's body.

The communication interface 170, for example, establishes communication between the electronic device 101 and an external device (e.g., the first external electronic device 102, the second external electronic device 104, or the server 106). You can. For example, the communication interface 170 may be connected to the network 162 through wireless or wired communication and communicate with an external device (eg, the second external electronic device 104 or the server 106).

Wireless communication is, for example, a cellular communication protocol, such as long-term evolution (LTE), LTE Advance (LTE-A), code division multiple access (CDMA), wideband CDMA (WCDMA), and universal protocol (UMTS). At least one of (mobile telecommunications system), WiBro (Wireless Broadband), or GSM (Global System for Mobile Communications) may be used. Additionally, wireless communication may include, for example, short-range communication 164. The short-range communication 164 may include, for example, at least one of wireless fidelity (WiFi), Bluetooth, near field communication (NFC), or global navigation satellite system (GNSS). Depending on the area of use or bandwidth, GNSS may be used, for example, among GPS (Global Positioning System), Glonass (Global Navigation Satellite System), Beidou Navigation Satellite System (hereinafter "Beidou"), or Galileo, the European global satellite-based navigation system. It can contain at least one. Hereinafter, in this document, “GPS” may be used interchangeably with “GNSS.” Wired communication may include, for example, at least one of universal serial bus (USB), high definition multimedia interface (HDMI), recommended standard 232 (RS-232), or plain old telephone service (POTS). The network 162 may include at least one of a telecommunications network, for example, a computer network (eg, LAN or WAN), the Internet, or a telephone network.

Each of the first and second external electronic devices 102 and 104 may be of the same or different type as the electronic device 101. According to one embodiment, server 106 may include one or more groups of servers. According to various embodiments, all or part of the operations performed on the electronic device 101 may be executed on one or more electronic devices (e.g., the electronic devices 102 and 104, or the server 106). In one embodiment, According to this, when the electronic device 101 is to perform a certain function or service automatically or upon request, the electronic device 101 performs at least some functions associated therewith instead of or in addition to executing the function or service on its own. may be requested from another device (e.g., electronic device 102, 104, or server 106). The other electronic device (e.g., electronic device 102, 104, or server 106) may request the requested function or Additional functions may be executed and the results may be transmitted to the electronic device 101. The electronic device 101 may process the received results as is or additionally to provide the requested function or service. To this end, for example, For example, cloud computing, distributed computing, or client-server computing technologies may be used.

Figure 2 is a block diagram of an electronic device 201 according to various embodiments. The electronic device 201 may include, for example, all or part of the electronic device 101 shown in FIG. 1 . The electronic device 201 includes one or more processors (e.g., application processors (AP)) 210, a communication module 220, a subscriber identification module 224, a memory 230, a sensor module 240, and an input device 250. ), display 260, interface 270, audio module 280, camera module 291, power management module 295, battery 296, indicator 297, and motor 298. there is.

The processor 210, for example, can run an operating system or application program to control a number of hardware or software components connected to the processor 210, and can perform various data processing and calculations. The processor 210 may be implemented, for example, as a system on chip (SoC). According to one embodiment, the processor 210 may further include a graphic processing unit (GPU) and/or an image signal processor. The processor 210 may include at least some of the components shown in FIG. 2 (eg, the cellular module 221). The processor 210 can load and process commands or data received from at least one of the other components (e.g., non-volatile memory) into the volatile memory, and store various data in the non-volatile memory. there is.

The communication module 220 may have the same or similar configuration as the communication interface 170 of FIG. 1. The communication module 220 may include, for example, a cellular module 221, a WiFi module 223, a Bluetooth module 225, a GNSS module 227 (e.g., a GPS module, a Glonass module, a Beidou module, or a Galileo module). , may include an NFC module 228 and a radio frequency (RF) module 229.

For example, the cellular module 221 may provide voice calls, video calls, text services, or Internet services through a communication network. According to one embodiment, the cellular module 221 may use the subscriber identification module (eg, SIM card) 224 to distinguish and authenticate the electronic device 201 within the communication network. According to one embodiment, the cellular module 221 may perform at least some of the functions that the processor 210 can provide. According to one embodiment, the cellular module 221 may include a communication processor (CP).

Each of the WiFi module 223, Bluetooth module 225, GNSS module 227, or NFC module 228 may include, for example, a processor for processing data transmitted and received through the corresponding module. According to some embodiments, at least some (e.g., two or more) of the cellular module 221, WiFi module 223, Bluetooth module 225, GNSS module 227, or NFC module 228 are one integrated chip. (IC) or may be included within an IC package.

For example, the RF module 229 may transmit and receive communication signals (eg, RF signals). The RF module 229 may include, for example, a transceiver, a power amp module (PAM), a frequency filter, a low noise amplifier (LNA), or an antenna. According to another embodiment, at least one of the cellular module 221, WiFi module 223, Bluetooth module 225, GNSS module 227, or NFC module 228 is capable of transmitting and receiving RF signals through a separate RF module. You can.

Subscriber identification module 224 may include, for example, a card and/or an embedded SIM that includes a subscriber identification module, and may include unique identification information (e.g., an integrated circuit card identifier (ICCID)) or May include subscriber information (e.g., international mobile subscriber identity (IMSI)).

The memory 230 (eg, memory 130) may include, for example, an internal memory 232 or an external memory 234. The built-in memory 232 may include, for example, volatile memory (e.g., dynamic RAM (DRAM), static RAM (SRAM), or synchronous dynamic RAM (SDRAM), etc.), non-volatile memory (e.g., OTPROM (one time programmable ROM), PROM (programmable ROM), EPROM (erasable and programmable ROM), EEPROM (electrically erasable and programmable ROM), mask ROM, flash ROM, flash memory (such as NAND flash or NOR flash, etc.), It may include at least one of a hard drive or a solid state drive (SSD).

The external memory 234 may be a flash drive, for example, compact flash (CF), secure digital (SD), micro secure digital (Micro-SD), mini secure digital (Mini-SD), or extreme secure digital (xD). digital), MMC (multi-media card), or memory stick, etc. may be further included. The external memory 234 may be functionally and/or physically connected to the electronic device 201 through various interfaces.

For example, the sensor module 240 may measure a physical quantity or sense the operating state of the electronic device 201 and convert the measured or sensed information into an electrical signal. The sensor module 240 includes, for example, a gesture sensor 240A, a gyro sensor 240B, an atmospheric pressure sensor 240C, a magnetic sensor 240D, an acceleration sensor 240E, a grip sensor 240F, and a proximity sensor ( 240G), color sensor (240H) (e.g. RGB (red, green, blue) sensor), biometric sensor (240I), temperature/humidity sensor (240J), illuminance sensor (240K), or UV (ultra violet) ) It may include at least one of the sensors 240M. Additionally or alternatively, the sensor module 240 may include, for example, an olfactory sensor (E-nose sensor), an electromyography sensor (EMG sensor), an electroencephalogram sensor (EEG sensor), and an electrocardiogram sensor (ECG sensor). , may include an IR (infrared) sensor, an iris sensor, and/or a fingerprint sensor. The sensor module 240 may further include a control circuit for controlling at least one sensor included therein. In some embodiments, the electronic device 201 further includes a processor configured to control the sensor module 240, either as part of the processor 210 or separately, while the processor 210 is in a sleep state, The sensor module 240 can be controlled.

The input device 250 may include, for example, a touch panel 252, a (digital) pen sensor 254, a key 256, or an ultrasonic input device ( 258) may be included. The touch panel 252 may use at least one of, for example, a capacitive type, a resistive type, an infrared type, or an ultrasonic type. Additionally, the touch panel 252 may further include a control circuit. The touch panel 252 may further include a tactile layer to provide a tactile response to the user.

The (digital) pen sensor 254 may be, for example, part of a touch panel or may include a separate recognition sheet. Keys 256 may include, for example, physical buttons, optical keys, or keypads. The ultrasonic input device 258 can detect ultrasonic waves generated from an input tool through a microphone (e.g., microphone 288) and check data corresponding to the detected ultrasonic waves.

Display 260 (eg, display 160 ) may include a panel 262 , a holographic device 264 , or a projector 266 . The panel 262 may include the same or similar configuration as the display 160 of FIG. 1 . Panel 262 may be implemented as flexible, transparent, or wearable, for example. The panel 262 may be composed of the touch panel 252 and one module. The hologram device 264 can display a three-dimensional image in the air using light interference. The projector 266 can display an image by projecting light onto the screen. The screen may be located, for example, inside or outside the electronic device 201. According to one embodiment, the display 260 may further include a control circuit for controlling the panel 262, the hologram device 264, or the projector 266.

The interface 270 may be, for example, a high-definition multimedia interface (HDMI) 272, a universal serial bus (USB) 274, an optical interface 276, or a D-subminiature (D-sub). )(278). Interface 270 may be included in, for example, communication interface 170 shown in FIG. 1 . Additionally and alternatively, the interface 270 may be, for example, a mobile high-definition link (MHL) interface, a secure digital (SD) card/multi-media card (MMC) interface, or an infrared interface (IrDA). data association) standard interface.

The audio module 280 can, for example, convert sound and electrical signals in two directions. At least some components of the audio module 280 may be included in, for example, the input/output interface 145 shown in FIG. 1 . The audio module 280 may process sound information input or output through, for example, a speaker 282, a receiver 284, an earphone 286, or a microphone 288.

The camera module 291 is, for example, a device capable of shooting still images and moving images. According to one embodiment, the camera module 291 includes one or more image sensors (e.g., a front sensor or a rear sensor), a lens, and an image signal processor (ISP). , or it may include a flash (e.g., LED or xenon lamp, etc.).

The power management module 295 may manage power of the electronic device 201, for example. According to one embodiment, the power management module 295 may include a power management integrated circuit (PMIC), a charger integrated circuit (IC), or a battery or fuel gauge. PMIC may have wired and/or wireless charging methods. The wireless charging method includes, for example, a magnetic resonance method, a magnetic induction method, or an electromagnetic wave method, and may further include an additional circuit for wireless charging, for example, a coil loop, a resonance circuit, or a rectifier. there is. The battery gauge may measure, for example, the remaining amount of the battery 296, voltage, current, or temperature during charging. Battery 296 may include, for example, a rechargeable battery and/or a solar battery.

The indicator 297 may display a specific state of the electronic device 201 or a part thereof (eg, the processor 210), such as a booting state, a message state, or a charging state. The motor 298 can convert electrical signals into mechanical vibration and generate vibration or haptic effects. Although not shown, the electronic device 201 may include a processing unit (eg, GPU) to support mobile TV. A processing device for supporting mobile TV may process media data according to standards such as, for example, digital multimedia broadcasting (DMB), digital video broadcasting (DVB), or mediaFlo ^™ .

Each of the components described in this document may be composed of one or more components, and the names of the components may vary depending on the type of electronic device. In various embodiments, an electronic device may be configured to include at least one of the components described in this document, and some components may be omitted or may further include other additional components. Additionally, some of the components of the electronic device according to various embodiments are combined to form a single entity, so that the functions of the corresponding components before being combined can be performed in the same manner.

3 is a block diagram of a program module according to various embodiments. According to one embodiment, the program module 310 (e.g., program 140) is an operating system (OS) and/or operating system that controls resources related to an electronic device (e.g., electronic device 101). It may include various applications (e.g., application program 147) running on the system. The operating system may be, for example, Android, iOS, Windows, Symbian, Tizen, or Bada.

The program module 310 may include a kernel 320, middleware 330, an application programming interface (API) 360, and/or an application 370. At least a portion of the program module 310 may be preloaded on the electronic device or downloaded from an external electronic device (eg, the electronic devices 102 and 104, the server 106, etc.).

The kernel 320 (eg, kernel 141) may include, for example, a system resource manager 321 and/or a device driver 323. The system resource manager 321 may control, allocate, or retrieve system resources. According to one embodiment, the system resource manager 321 may include a process management unit, a memory management unit, or a file system management unit. The device driver 323 may include, for example, a display driver, camera driver, Bluetooth driver, shared memory driver, USB driver, keypad driver, WiFi driver, audio driver, or IPC (inter-process communication) driver. .

For example, the middleware 330 provides functions commonly required by the application 370 or provides various functions through the API 360 so that the application 370 can efficiently use limited system resources inside the electronic device. Functions may be provided as an application 370. According to one embodiment, the middleware 330 (e.g., middleware 143) includes a runtime library 335, an application manager 341, a window manager 342, and a multimedia manager. ) (343), resource manager (344), power manager (345), database manager (346), package manager (347), connectivity manager ) (348), a notification manager (349), a location manager (350), a graphic manager (351), or a security manager (352). can do.

The runtime library 335 may include, for example, a library module used by a compiler to add new functions through a programming language while the application 370 is running. The runtime library 335 may perform functions such as input/output management, memory management, or arithmetic functions.

The application manager 341 may, for example, manage the life cycle of at least one application among the applications 370. The window manager 342 can manage GUI resources used on the screen. The multimedia manager 343 can identify the format required to play various media files and perform encoding or decoding of the media file using a codec suitable for the format. The resource manager 344 may manage resources such as source code, memory, or storage space of at least one of the applications 370.

For example, the power manager 345 may operate in conjunction with a basic input/output system (BIOS) to manage batteries or power and provide power information necessary for the operation of electronic devices. The database manager 346 may create, search, or change a database to be used by at least one of the applications 370. The package manager 347 can manage the installation or update of applications distributed in the form of package files.

The connection manager 348 can manage wireless connections, such as WiFi or Bluetooth. The notification manager 349 can display or notify events such as arrival messages, appointments, and proximity notifications in a way that does not disturb the user. The location manager 350 can manage location information of the electronic device. The graphics manager 351 can manage graphic effects or user interfaces related thereto to be provided to the user. The security manager 352 can provide various security functions necessary for system security or user authentication. According to one embodiment, when an electronic device (e.g., electronic device 101) includes a phone function, the middleware 330 further includes a telephony manager for managing the voice or video call function of the electronic device. can do.

Middleware 330 may include a middleware module that forms a combination of various functions of the above-described components. The middleware 330 may provide specialized modules for each type of operating system to provide differentiated functions. Additionally, the middleware 330 may dynamically delete some existing components or add new components.

The API 360 (eg, API 145) is, for example, a set of API programming functions and may be provided in different configurations depending on the operating system. For example, in the case of Android or iOS, one API set can be provided for each platform, and in the case of Tizen, two or more API sets can be provided for each platform.

The application 370 (e.g., the application program 147) includes, for example, a home 371, a dialer 372, an SMS/MMS 373, an instant message (IM) 374, a browser 375, Camera (376), Alarm (377), Contacts (378), Voice Dial (379), Email (380), Calendar (381), Media Player (382), Album (383), or Clock (384), Health Care It may include one or more applications that can perform functions such as health care (e.g., measuring the amount of exercise or blood sugar) or providing environmental information (e.g., providing atmospheric pressure, humidity, or temperature information).

According to one embodiment, the application 370 is an application (hereinafter, described below) that supports information exchange between an electronic device (e.g., the electronic device 101) and an external electronic device (e.g., the electronic devices 102 and 104). For convenience, it may include an “information exchange application”). The information exchange application may include, for example, a notification relay application for delivering specific information to an external electronic device, or a device management application for managing an external electronic device.

For example, a notification delivery application transmits notification information generated by another application of an electronic device (e.g., an SMS/MMS application, an email application, a health management application, or an environmental information application, etc.) to an external electronic device (e.g., an electronic device (102). , 104)). Additionally, the notification delivery application may, for example, receive notification information from an external electronic device and provide it to the user.

The device management application may, for example, manage at least one function of an external electronic device (e.g., electronic device 102, 104) that communicates with the electronic device, such as the turn-on of the external electronic device itself (or some of its components). (on/turn-off or adjusting display brightness (or resolution)), managing applications running on external electronic devices or services provided by external electronic devices (e.g. call service or message service, etc.) (e.g. installation, deletion, etc.) , or update).

According to one embodiment, the application 370 may include an application (e.g., a health management application of a mobile medical device, etc.) specified according to the properties of an external electronic device (e.g., the electronic devices 102 and 104). According to one embodiment, the application 370 may include an application received from an external electronic device (e.g., the server 106 or the electronic devices 102 and 104). According to one embodiment, the application 370 It may include a preloaded application or a third party application that can be downloaded from a server. The names of the components of the program module 310 according to the illustrated embodiment are based on the type of operating system. Therefore, it may vary.

According to various embodiments, at least a portion of the program module 310 may be implemented as software, firmware, hardware, or a combination of at least two or more thereof. At least a portion of the program module 310 may be implemented (eg, executed) by, for example, a processor (eg, processor 210). At least a portion of the program module 310 may include, for example, modules, programs, routines, sets of instructions, or processes for performing one or more functions.

FIGS. 4A and 4B show conceptual diagrams for explaining an electronic device and an external imaging device according to various embodiments of this document.

As shown in FIG. 4A, the electronic device 101 may be connected to an attached external imaging device, for example, the imaging device 400. At this time, the electronic device 101 may be connected wirelessly. The electronic device 101 and the photographing device 400 may include, for example, a communication circuit supporting a WiFi method, including a WiFi direct method, and be wirelessly connected through this. In addition, it may be configured to communicate wirelessly through various short-distance communication methods such as Bluetooth, BLE (Bluetooth Low Energy), NFC, and Zig-bee.

Additionally, as shown in FIG. 4B, the electronic device 101 may be wired to the imaging device 400 through a cable 402. Cable 402 may be manufactured based on the USB standard, for example, and may include connectors according to various USB standards. In addition, the electronic device 101 and the photographing device 400 may also include physical ports according to various USB standards, and accordingly, the electronic device 101 and the photographing device 400 can be connected to each other through the cable 402. can be connected.

The photographing device 400 can photograph an external landscape and thus obtain an image. The imaging device 400 can capture images in 360 degrees omnidirectionally based on a fixed viewpoint. Here, the omnidirectional video is an image that includes both the view seen while the photographer rotates in place and the view seen by tilting or lowering the head.

The photographing device 400 may include, for example, a plurality of cameras in a plurality of directions to capture images in all directions, and thereby obtain a plurality of images in a plurality of directions. Each of the plurality of cameras included in the photographing device 400 may include, for example, a fish-eye lens and may have an angle of view exceeding 180 degrees, for example. Each of the plurality of cameras may be arranged so that their angles of view partially overlap, and accordingly, images captured by each of the plurality of cameras may include portions that overlap with each other. The imaging device 400 can transmit a plurality of images to the electronic device 101, and the electronic device 101 can stitch the plurality of images into one image. Alternatively, a plurality of images captured by the photographing device 400 may be stitched into one image (i.e., omnidirectional image) and transmitted to the electronic device 101.

For example, the photographing device 400 may be equipped with two cameras, one each on the front and one on the back, each having a fisheye lens with a viewing angle of more than 180 degrees, for omnidirectional photography, and through this, two cameras on the front and back Video can be obtained. Using these two images, the electronic device 100 then generates one omnidirectional image. Meanwhile, those skilled in the art will easily understand that the number, angle of view, installation location, etc. of cameras provided in the photographing device 400 described above are merely illustrative, and that various modifications may be made.

Meanwhile, the photographing device 400 receives captured images and related metadata, that is, the location and movement of the photographing device received through sensors (e.g., GPS, WiFi fingerprint, gyro sensor, acceleration sensor, geomagnetic sensor, altitude sensor, etc.). , information about posture, etc. can be associated with at least one of the captured images as camera characteristic information (e.g., camera calibration parameters, shooting state information). For example, the photographing device 400 may provide at least information about the posture of the photographing device 400 (e.g., pitch, roll, yaw angle) as camera characteristic information (hereinafter, (abbreviated as 'camera information').

Additionally, the imaging device 400 may map the captured omnidirectional image into a two-dimensional flat image, encode the mapped two-dimensional flat image, and store it in its own memory or transmit it to the electronic device 101.

FIG. 5 shows blocks of an electronic device and an external imaging device according to various embodiments of the present document.

Referring to FIG. 5, an external photographing device 501, such as a camera device, serves as an input device for receiving omnidirectional images, for example. The external filming device 501 is a device that can film 360 degrees in all directions and wirelessly transmit captured images or preview screen images in real time. An electronic device 502, such as a smartphone, serves as an output device that displays omnidirectional images provided from the external photographing device 501.

The external imaging device 501 includes a video input unit 511 and a video encoder 512 for inputting and processing video signals; A sensor unit 531 and an angle information conversion unit 532 for obtaining camera information; It includes a multiplexer 544 for combining image data and camera data, and a communication unit 545 for transmitting the output of the multiplexer 544 to the electronic device 502. In addition, an audio input unit 521 and an audio encoder 522 for inputting and processing audio signals may be additionally provided.

To enable omnidirectional recording, the video input unit 511 includes, for example, two cameras (fisheye lens and image sensor) installed on the front and rear sides, namely, a first camera 511-1 and a second camera. It is provided with 511-2, and also includes an image merge unit 511-3 for merging images captured by the first and second cameras 511-1 and 511-2. The video encoder 512 performs encoding on the merged video provided from the video merge unit 511-3 of the video input unit 511. For example, the video encoder 512 may perform encoding based on codec standards such as H.264, MPEG-4, and HEVC. The audio input unit 521 may be composed of a microphone, etc., and receives an external audio signal. The audio encoder 522 performs encoding on the received audio signal provided from the audio input unit 521. The audio encoder (522) converts the received audio signal into a compressed signal or PCM data using an encoding compression technique such as AAC or AC3.

The sensor unit 531 is implemented with a gyro sensor, an acceleration sensor, etc., and detects the angular velocity and acceleration of the external imaging device 501. The angle information conversion unit 532 converts the signal (raw data) detected by the sensor unit 531 into angle information, and provides information about the shooting posture (e.g., pitch, roll, yaw). (yaw) angle), and camera information including location and movement information of the corresponding external photographing device 510 is generated. The sensor unit 531 may also be configured to include a GPS module, a movement detection sensor, etc. to detect the location and movement of the external photographing device 501 and transmit the information to the electronic device.

The multiplexer 544 synthesizes the video/audio data encoded by the video encoder 512 and the audio encoder 522 and converts it into a format for, for example, wireless transmission or storage. In particular, the multiplexer 544 performs a function of synthesizing camera information provided by the angle information converter 532 in association with the video/audio signal as metadata. That is, the metadata can be stored in memory (not shown) along with the encoded video/audio data or transmitted in streaming or file form. According to various embodiments, metadata may be created in a separate document format and stored in association with encoded audio/video data, or may be transmitted in association when there is a request for the audio/video data. As such, the multiplexer 544 must be able to support a plurality of video and audio data, and must also support camera information for stitching multiple images input from the electronic device 502 into one image. An example of a file format for this will be described in detail with reference to FIG. 15, which will be described later.

The wireless communication unit 545 is composed of, for example, a WiFi module 545-1, and wirelessly transmits the data file (or streaming) provided from the multiplexer 544 using WiFi.

Meanwhile, the electronic device 502 includes a wireless communication unit 555 that receives a data file or streaming containing omnidirectional image information wirelessly transmitted from the external photographing device 501, and data received through the wireless communication unit 555. A demultiplexer 556 for demultiplexing video data and camera data in a file, a video decoder 557 for decoding video data provided from the demultiplexer 556, and video decoded from the video decoder 557. It includes a display unit 560 that displays an image on the screen according to. In addition, when the decoded video data is a merged image of multiple cameras, it may further include a stitching unit 558 for stitching them together, and may further include a screen stabilization unit 559 for compensating for image shaking, etc. can do. In addition, an audio decoder 567 and an audio output unit 569 (e.g., speaker) for decoding and outputting audio data may be additionally provided.

The wireless communication unit 555 of the electronic device 502 includes, for example, a WiFi module 555-1, and data is transmitted wirelessly according to the WiFi method from the wireless communication unit 545 of the external imaging device 501. The file is received in real time and provided to the demultiplexer 556.

In various embodiments of this document, the demultiplexer 556 may demultiplex video data, audio data, and camera information from the data file received from the wireless communication unit 545 and output each.

Video decoder. For example, video data provided from the demultiplexer 556 may be decoded based on codec standards such as H.264, MPEG-4, and HEVC.

When the video data provided from the demultiplexer 556 is a merged image of multiple (e.g., two) cameras, the stitching unit 558 stitches them into one image, e.g., one image. Generate omnidirectional images. At this time, according to at least some of the various embodiments of this document, the stitching unit 558 corrects the distortion of the capture axis of each image according to the unique characteristic information of each camera corresponding to the plurality of images that can be obtained from the camera information. This ensures that the capturing axes of the plurality of images are accurately aligned with each other. As described above, when a plurality of images are stitched together through correction of the capturing axis of the plurality of images, the problem of the images not accurately matching each other at the boundary between the plurality of images is solved. Details on correction of distortion of the shooting axis between images will be described later.

The screen stabilization unit 559 compensates for shaking in the image provided from the stitching unit 558, for example, an omnidirectional image, so that the image is displayed stably on the screen. At this time, according to at least some of the various embodiments of this document, the display unit 559 checks the change in the shooting posture corresponding to the image to be currently displayed based on information about the shooting posture that can be obtained from the camera information, The positional change of the image due to the change in the shooting posture is offset and output to the display unit 560. The display unit 560 displays the image output from the screen stabilization unit 559 on the screen. Accordingly, the image on the displayed screen is displayed stably without shaking. Details on image shake correction will be described later.

FIG. 6 is a diagram illustrating a signal (data) processing flow in an external imaging device according to various embodiments of this document. Referring to FIG. 6, data processing in an external imaging device according to various embodiments of this document will first be described in more detail.

Referring to FIG. 6, the overall signal flow in an external imaging device can be largely divided into an audio signal part, a video signal part, and a file system part. The video and file system part can be separated into a main video signal part and a secondary video signal part. The following is a description of the corresponding block and each signal in each signal part.

The audio input unit 600 is a part that receives audio data and converts the input analog audio signal into a digital audio signal (a0). The audio encoder 601 converts the input digital audio signal into a compressed signal or PCM data (a1) using an encoding compression technique such as AAC or AC3.

The video input unit 610 is a part that converts the input analog video signal coming through the camera sensor into a digital signal, and the video merge part 611 is a part that merges multiple input video images into one video signal (vO). . The merged video signal (v0) is input to the video size converter 612 and the video encoder 6132, respectively. The video size converter 612 serves to convert the size of the input video signal (v0) into a video signal (v1) of a size set by the user. The image size conversion method is performed using 'Bi-linear', 'Bi-cubic', and 'Non-linear' filters. In other words, the user can select and set one of various video sizes in advance. The size-converted signal (v1) is input to the video encoder 613. The input data of the video encoder 613 includes a video signal in the original size (v0) and a video signal in the converted size (v1), and the output data is compressed video data (v2) and compressed video data in the converted size (v3). ) may exist.

The storage A/V multiplexer 620 is a general file system multiplexer that converts input audio data (a1), video data (v2), and camera information into a preset file format standard and stores them in the storage medium 630. Perform. Representative file format standards include 'MP4', 'mov', and 'avi'.

The stream A/V multiplexer 640 transmits data to the network connection unit 650 for real-time transmission. The stream A/V multiplexer 640 has an appropriate file format for real-time transmission. This file structure may contain a lot of video information and a lot of audio information, and in particular it also contains a lot of camera-related information. This camera-related information has the following contents. It can always include information about the object or view point the user wants to see, camera calibration information, geomagnetic sensor information, GSP information, and camera movement information. If the user does not separately designate a view point, the view point-related information is a basic view point. For example, the center of the photographing center of the front of the photographing device may be determined as the view point.

FIG. 7 is an example diagram for explaining an image generated by an image merging and stitching function/operation performed by an electronic device and an external imaging device according to various embodiments of this document. The external imaging device 501 and the electronic device 502 shown in FIG. 7 may have the structure shown in FIG. 5 above.

Referring to FIG. 7, an external photographing device according to various embodiments of this document can merge images acquired by, for example, two cameras provided in the external photographing device as shown in FIG. 7. . In FIG. 7 , for convenience of explanation, the case where the external photographing device is equipped with two cameras is exemplarily described, but the embodiments of this document are not limited by this. An external imaging device according to various embodiments of this document may transmit image information about the merged image to the electronic device 501.

Referring to FIG. 7, the electronic device 502 according to various embodiments of this document may generate an image displayed on the display unit of the electronic device using image information received from the external photographing device 501. You can. In FIG. 7 , an image on which stitching has been performed on the merged images provided from the external electronic device 501 by the electronic device 502 (e.g., capture axis correction between images has been performed) is illustrated. It is depicted as an enemy. Through the stitching function/operation, the electronic device 502 can provide a 360-degree omnidirectional image to the user. The image displayed on the electronic device 502 after the stitching is performed is a preview image acquired by the external photographing device 501 and/or a preview image acquired by the external photographing device 501 and displayed on the electronic device 502. ) can include images already stored in .

FIG. 8 is an example diagram for explaining changes in pitch angle, roll angle, and yaw angle in an external imaging device according to various embodiments of this document.

According to various embodiments of this document, changes may occur in the photographing posture of the external photographing device, such as the external photographing device may be installed on various moving objects or the installation environment may change. In response to this change in photographing posture, a change in at least one of the pitch angle, roll angle, and yaw angle may occur by the external photographing device. The external photographing device transmits information on pitch, roll, and yaw angles (i.e., camera information) to the electronic device, allowing the electronic device to know the photographing posture of the external photographing device. The pitch angle corresponds to the tilt value (e.g., rotation angle about the x-axis) of the camera (or the external imaging device), and the roll angle is the front of the camera (or the external photographing device) It corresponds to a rotation value (e.g., rotation angle about the y-axis) with the shooting axis as the rotation axis, and the yaw angle is the horizontal rotation (pan/rotation-pan) value of the camera (or the external shooting device). (e.g., rotation angle about the z axis).

In addition, according to various embodiments of this document, when an external photographing device is equipped with a plurality of cameras, when initially connected to the electronic device, etc., information about the unique photographing characteristics of each of the plurality of cameras is provided. Can be transmitted to electronic devices.

In more detail, an external photographing device according to various embodiments of this document may include, for example, at least two cameras to provide a 360-degree omnidirectional image to a user. At this time, the external photographing device may store in advance unique photographing characteristic information for each of the plurality of cameras, and when the external photographing device and the electronic device are initially connected, for example, the unique photographing characteristic information of the plurality of cameras can be transmitted to the electronic device.

The unique shooting characteristic information for the plurality of cameras may also be referred to as default camera information or standard camera information, which refers to the information of each camera installed in the external shooting device during the manufacturing process of the external shooting device. It may include pitch angle information, roll angle information, and yaw angle information. For example, the pitch angle, roll angle, and yaw angle as unique shooting characteristic information of the first camera may all be set to 0 degrees. However, this is an example, and there may be cases where at least one angle is not set to 0 degrees due to errors in the manufacturing process. In addition, among the plurality of cameras, the pitch, roll, and yaw angles in each unique shooting characteristic information may differ from each other due to installation tolerances between the first camera and the second camera. In this document, by transmitting unique shooting characteristic information about the plurality of cameras installed in the external imaging device to the electronic device, the electronic device can correct the distortion of the capturing axis of the images captured by the plurality of cameras.

FIGS. 9A and 9B are exemplary diagrams illustrating a process in which an image is corrected using unique shooting characteristic information for a plurality of cameras transmitted from an external imaging device in an electronic device according to various embodiments of the present document. .

The electronic device according to various embodiments of this document may calibrate each of the plurality of images transmitted from the external photographing device using unique photographing characteristic information about the plurality of cameras transmitted from the external photographing device. In FIG. 9A, for example, an image acquired by a front camera (a first camera; a camera located in a direction facing a specific object) of the external electronic device is stored in the first camera's unique shooting characteristic information (i.e., pitch angle, roll). An image corrected according to the angle and yaw angle is shown as an example. Likewise, in FIG. 9B, the image acquired by, for example, the rear camera (second camera; camera located in the direction facing the user) of the external photographing device is stored in the second camera's unique photographing characteristic information (i.e., pitch angle, roll). An image corrected to match the yaw angle and yaw angle is shown as an example. In the example of FIGS. 9A and 9B, the horizontal tilt of the images captured by the first camera and the second camera is shown to be accurately corrected.

After performing correction on the capturing axis as shown in FIGS. 9A and 9B according to various embodiments of this document, stitching may be performed on the corrected image. Accordingly, a plurality of images captured by a plurality of cameras can be accurately aligned, and the boundary between the plurality of images can be smoothly connected during stitching. The electronic device may display the stitched image on the electronic device.

FIGS. 10A and 10B are example diagrams for explaining images that can be displayed on an electronic device when the posture of an external imaging device changes according to various embodiments of this document.

FIG. 10A shows an example of an omnidirectional image stitched in an electronic device when, for example, the external imaging device is in the correct position. In the same state as shown in FIG. 10A, if the posture of the external imaging device is reversed, the omnidirectional image stitched in the electronic device also has objects in the image flipped compared to FIG. 10A. When an omnidirectional image is displayed on the screen in the state shown in FIG. 10b, an inverted image is displayed on the screen.

Meanwhile, the image displayed on the screen of the electronic device may display all areas of the omnidirectional image as shown in FIGS. 10A and 10B, but the object recognition rate, viewing angle and visibility of an actual person, display screen size, etc. Considering this, only a portion of the view area corresponding to the user's field of interest (FOV) among the omnidirectional images is displayed.

FIGS. 11A and 11B are example diagrams for explaining the display of a user view area among omnidirectional images that can be displayed on an electronic device (eg, a smartphone) according to various embodiments of the present document. FIGS. 11A and 11B may be screens corresponding to the omnidirectional images of FIGS. 10A and 10B, respectively.

As shown in FIGS. 11A and 11B, the image displayed on the screen of the electronic device displays a portion of the view area (FOV) corresponding to the view point designated by the user among the omnidirectional images. 11A and 11B, for example, the view area is shown to be set to the center of the omnidirectional image. Additionally, in FIG. 11B, it can be seen that the image in the view area is displayed in an inverted state compared to FIG. 11B.

FIGS. 12A, 12B, and 12C illustrate correcting a user's desired view area among omnidirectional images that can be displayed in an electronic device according to various embodiments of this document using shooting posture information transmitted from an external shooting device. This is an example drawing for the following. In FIGS. 12A, 12B, and 12C, omnidirectional images are shown, and a rectangular area at the center of the omnidirectional image is shown as an example as a view area.

The external imaging device transmits image information in real time and, for example, periodically includes information about the shooting posture (i.e. pitch angle, roll angle, yaw angle) of the external imaging device in the camera information and transmits it to the electronic device. Can be transmitted. The electronic device can know the shaking of the external photographing device (and the resulting shaking of the photographing screen) using information about the photographing posture transmitted from the external photographing device. Additionally, the electronic device corrects the position of the currently displayed view area according to information about the shooting posture, resulting in a view image displayed without shaking.

That is, in various embodiments of this document, the electronic device uses information about the shooting posture (information about the pitch angle, roll angle, and yaw angle) while the rectangular area of FIG. 12A is displayed as the view area. , As shown in Figure 12b, the omnidirectional image can be rotated clockwise/counterclockwise or moved up and down or left and right so that the image corresponding to the position of the view area is displayed without change (i.e., without shaking) on the screen. You can. Alternatively, in various other embodiments of this document, as shown in FIG. 12c, the view area in the omnidirectional image is rotated clockwise/counterclockwise or moved up and down or left and right using information about the shooting posture. This can be done, and as a result, shaking can be eliminated from the image displayed on the screen.

For example, when the posture of the external photographing device is reversed or rotated, the electronic device may provide, for example, the photographing posture information so that the image is displayed in the same direction as the image captured when the external photographing device is not rotated. You can control the view area to be displayed on the screen by rotating the omnidirectional image according to the roll angle. Likewise, when the posture of the external shooting device is tilted up and down or panned left and right, the electronic device moves the omnidirectional image up and down or left and right according to the pitch angle or yaw angle in the shooting posture information to change the view area to the top of the screen. You can control the display to . In addition, in various embodiments of this document, an external photographing device can be implemented to transmit its own movement information to the electronic device, and the electronic device further reflects this movement information to determine the location of the view area in real time. It can also be implemented to change it negatively.

FIG. 13 is an example diagram illustrating a communication procedure between an electronic device (eg, a smartphone) and an external photographing device according to various embodiments of this document.

Referring to FIG. 13, first, in operation 1301, the electronic device and the external photographing device perform an interconnection operation according to a preset method among various communication methods. For example, they can be interconnected according to the UPnP (Universal Plug and Play) method. These connection operations may perform operations such as mutual device discovery, mutual authentication, establishment of a communication connection, and confirmation of mutually supportable services.

In operation 1311, the electronic device requests to start transmitting the captured image to the external photographing device. In response to the request, in operation 1312, the external imaging device responds to the electronic device. Upon receiving the response from the external photographing device, the electronic device requests video, audio, and basic camera-related information (i.e., unique characteristic information for each of the plurality of cameras) in operation 1313. In operation 1314, the external photographing device transmits related information in response to the request from the electronic device.

In operation 1315, the external imaging device transmits images and audio data captured through a plurality of cameras in real time to generate an omnidirectional image. In particular, camera information, including information about the shooting posture, is also periodically transmitted. Accordingly, the electronic device can perform shooting axis correction and shooting posture correction operations for a plurality of images. Meanwhile, during this operation 1315, as described later according to at least some of the various embodiments of this document, for example, transmission of image (i.e., image corresponding to the view area) and audio data centered on the basic view point You can also proceed.

In operation 1316, in accordance with at least some of the various embodiments herein. When a viewpoint adjustment event by the user occurs in the electronic device, a request is made to the external photographing device. Accordingly, in operation 1317, the external photographing device may update camera information and transmit related information as well as image data related to the requested view point.

In operation 1316, the view point adjustment event may be generated, for example, in an electronic device equipped with a touch screen display, in response to a previously appropriately set operation on the touch screen to move the screen in the up, down, left, and right directions. Alternatively, the viewpoint adjustment event may be generated in response to a change in the user's gaze direction, for example, in an electronic device implemented as an HMD or capable of being combined with an HMD.

Meanwhile, in various embodiments of this document, the external photographing device transmits all image data for images captured through a plurality of cameras to the electronic device to generate omnidirectional images, and the electronic device displays the basic view area on its own. It can also be configured to automatically adjust the view area when a view point adjustment event is input. However, as shown in FIG. 13, when an external imaging device transmits image data corresponding to the view area to an electronic device, transmission efficiency can be increased.

FIG. 14 is an example diagram for explaining the operation flow in an electronic device and an external imaging device according to various embodiments of this document. For example, the operation shown in FIG. 14 may correspond to a more detailed operation flow of operation 1315, which transmits related data, including image data, in real time in the communication procedure shown in FIG. 13.

Referring to FIG. 14, an external imaging device (eg, reference numeral 501 in FIG. 5) simultaneously performs an image input and processing procedure, an audio input and processing procedure, and a camera information input and processing procedure. That is, operations 1401, 1411, and 1421 are performed in parallel to receive video input, audio input, and information about the shooting posture (i.e., sensor information), respectively. In operation 1402, it is checked whether the input image is an image input by multiple cameras (i.e., lenses). If the image is input by multiple cameras, the multiple images are merged in operation 1403, and then operation 1404. Encodes data for the merged images. Meanwhile, as a result of confirmation in operation 1402, if the video is not input from a plurality of cameras, the process proceeds directly to operation 1404 to encode the input video. Meanwhile, in operation 1421 above. In operation 1411, encoding is performed on the input audio data. Additionally, in operation 1422, the sensor information (raw data) input in operation 1421 is converted into angle information.

In operation 1430, the video data and audio data encoded as above and the converted angle information are multiplexed. Afterwards, in operation 1440, the multiplexed data file is wirelessly transmitted to the electronic device.

Through the above operation, it can be seen that the external imaging device combines (multiplexes) the video/audio/sensor information input in real time and wirelessly transmits it to the electronic device in real time.

The electronic device (for example, reference numeral 502 in FIG. 5 ) receives a data file transmitted in real time from the external photographing device and simultaneously performs an image processing procedure, an audio processing procedure, and a camera information processing procedure. That is, operations 1471 and 1481 are performed in parallel to decode video data and audio data, respectively. In operation 1472, it is checked whether the decoded image data is image data from multiple cameras (i.e., lenses), and if it is multiple image data from multiple cameras, the multiple images are stitched together with the shooting axis correction in operation 1473. .

In operation 1490, the stitched image or the image for the view area among the stitched images is displayed on the screen and decoded audio is output. At this time, shake correction is performed on the image displayed on the screen.

15A and 15B are example diagrams for explaining the format of a file transmitted to an electronic device by an external photographing device according to various embodiments of this document. For example, the file format shown in FIGS. 15A and 15B may be the format of a data file transmitted at the initial stage of connection from an external photographing device to an electronic device.

Referring to FIGS. 15A and 15B, the transmission file can be basically divided into a file format field part and a data field part. The file format field part contains video channels corresponding to each of a plurality of cameras (or images). It includes format information for (i.e., 'Video Steam Information 1, 2,...n') and format information for the audio channel (i.e., 'Audio Stream Information'). The format information for these video channels and the format information for the audio channels may be substantially the same as the format information for general video/audio transmission. At this time, the file format field includes camera data format information (i.e., 'Camera Information 1, 2,.... n) for each of the plurality of cameras, in addition to the audio/video format information described above according to various embodiments of this document. ) is additionally included.

As shown in FIG. 15B, the field portion for the camera data format information includes a header (e.g., 'camera data header mark') field portion indicating camera data format information, a header size field portion, and camera data. It can be broken down into fields of actual information about the format.

The actual information field portion regarding the camera data format includes pitch angle, roll angle, and yaw angle information corresponding to unique shooting characteristic information for each of a plurality of cameras, or pitch angle, roll angle, and yaw angle information corresponding to information on real-time shooting posture, There may be angle information. Alternatively, there may be information that converts the pitch angle, roll angle, and yaw angle information into clockwise/counterclockwise rotation, tilt, and horizontal rotation (pan) values, and other GPS information (latitude, longitude, value), etc. In addition, although not shown in FIG. 15B, movement information of an external imaging device may also be included. In particular, in various embodiments of this document, unique shooting characteristic information for each of the plurality of cameras can be transmitted as, for example, clockwise/counterclockwise rotation, vertical tilt, and horizontal rotation values, and information about real-time shooting posture It can be transmitted as pitch angle, roll angle, and yaw angle information.

Additionally, each transmission type may be predefined in order to distinguish each piece of information included in the camera data format information. Additionally, the transmission period for pitch angle, roll angle, and yaw angle information corresponding to the shooting posture may be defined in advance.

As described above, a file format field may be implemented including camera data format information, and each audio/video data and camera data related to this file format field is transmitted and included in the data field portion. During a real-time data stream transmission operation, the data field contains camera information, in accordance with the preset period, for example, pitch angle, roll angle, and yaw angle information corresponding to unique shooting characteristic information for each of a plurality of cameras. B, pitch angle, roll angle, and yaw angle information corresponding to information on real-time shooting posture, clockwise/counterclockwise rotation, vertical tilt, and horizontal rotation values corresponding to unique shooting characteristic information for each of the plurality of cameras, Alternatively, GPS information, or movement information of the external photographing device, etc. are transmitted.

FIGS. 16A and 16B are example diagrams for explaining stream file formats of video, audio, and camera information transmitted to an electronic device by an external photographing device according to various embodiments of this document. FIGS. 16A and 16B show in more detail the transmission format of audio/video data and camera data corresponding to each of a plurality of cameras that may be included in the data field portion, especially compared to FIGS. 15A and 15B.

As shown in FIGS. 16A and 16B, video data, audio data, and camera data each have a tag field (i.e., 'Video Data Tag', 'Audio Data Tag', and 'Camera Data Tag') to distinguish the data. It can be transmitted in a format divided into a field describing the data size, a timestamp field, and a data field.

FIG. 16A shows, for example, an embodiment in which data is transmitted using DMA (Direct Memory Access) in an external imaging device. In Figure 16b, compared to Figure 16a, for example, when transmitting through a specific communication standard (e.g., a protocol for high-speed transmission, etc.), when data is processed according to the corresponding communication standard (e.g., dummy information is included) An example is shown where the size of the data to be transmitted is readjusted (aligned).

In this document, the process of performing stitching on the image acquired by the external electronic device has been described as being performed by the electronic device. However, according to various embodiments of this document, the stitching function/or operation may be performed by the external electronic device. In this case, information about the stitched image may be provided to the electronic device.

According to various embodiments of this document, the external electronic device may include at least some of at least two cameras, a memory, a processor, a communication interface, and a display.

FIG. 17 is an example diagram for explaining a control method of an electronic device according to various embodiments of this document.

Referring to FIG. 17, a method of controlling an electronic device according to various embodiments of the present document may include an operation 1700 of acquiring image information acquired by an external electronic device and camera information of the external photographing device. there is. Thereafter, an operation 1710 of generating an image to be displayed on an electronic device using the obtained image information, an operation 1720 of correcting the generated image using the acquired camera information, and the corrected image An operation 1730 of displaying on the electronic device may be performed.

In the description of the various embodiments of this document described above, the operation of performing stitching on the image acquired by the external imaging device has been described as being performed by the electronic device. However, according to various embodiments of this document, in addition, the stitching function/or operation may be performed by the external imaging device. Of course, in this case, when performing the stitching function/operation in an external imaging device, a shooting axis correction operation for a plurality of cameras can be performed. A stitched image may be provided to the electronic device by correcting the capturing axis in an external imaging device. In this case, the electronic device may perform the capturing posture correction operation to provide an image without shaking.

In addition, in the description of various embodiments of this document described above, the case where an external photographing device and an electronic device are directly connected wired/wireless is used as an example. However, according to various embodiments of this document, the external photographing device and the electronic device may not be directly connected. For example, an electronic device may receive and use images provided from a remote external imaging device through a wireless Internet network.

Additionally, according to various embodiments of this document, the electronic device may not receive image information transmitted in real time from an external photographing device, but may perform a playback operation based on image information already stored in the recording device. In some cases, shooting axis correction and/or posture correction operations may be performed through camera information that may be included in pre-stored image information.

Additionally, according to various embodiments of this document, the external photographing device may perform an image capturing operation through one wide-angle camera rather than a plurality of cameras, and the image provided to the electronic device from this external photographing device may be one. It may be a wide-angle video captured by a camera. In that case, the photographing device may only perform a photographing posture correction (i.e., shake correction) operation while displaying, for example, an image of the view area on the screen through a wide-angle image provided from the external photographing device.

Additionally, according to various embodiments of this document, images captured by the external photographing device may not be multiplexed with audio data. In addition, various modifications and changes to this document may be possible. In addition, the description of the electronic device according to the various embodiments of this document described above may be equally applied to the method of controlling an electronic device according to various embodiments of this document.

The term “module” used in this document may mean, for example, a unit that includes one or a combination of two or more of hardware, software, or firmware. “Module” may be used interchangeably with terms such as unit, logic, logical block, component, or circuit, for example. A “module” may be the smallest unit of integrated parts or a part thereof. A “module” may be the minimum unit or part of one that performs one or more functions. A “module” may be implemented mechanically or electronically. For example, a “module” is an application-specific integrated circuit (ASIC) chip, field-programmable gate arrays (FPGAs), or programmable-logic device, known or to be developed, that performs certain operations. It can contain at least one.

At least a portion of the device (e.g., modules or functions thereof) or method (e.g., operations) according to various embodiments may be stored in a computer-readable storage media, e.g., in the form of a program module. It can be implemented with instructions stored in . When the instruction is executed by a processor (eg, processor 120), the one or more processors may perform the function corresponding to the instruction. The computer-readable storage medium may be, for example, memory 130.

Computer-readable recording media include hard disks, floppy disks, magnetic media (e.g. magnetic tape), optical media (e.g. CD-ROM (compact disc read only memory), DVD (e.g. digital versatile disc, magneto-optical media (e.g., floptical disk), hardware device (e.g., read only memory (ROM), random access memory (RAM), or flash memory, etc. ), etc. In addition, program instructions may include not only machine language code such as that created by a compiler, but also high-level language code that can be executed by a computer using an interpreter, etc. The above-described hardware devices include a variety of It may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

A module or program module according to various embodiments may include at least one of the above-described components, some of them may be omitted, or may further include other additional components. Operations performed by modules, program modules, or other components according to various embodiments may be executed sequentially, in parallel, iteratively, or in a heuristic manner. Additionally, some operations may be executed in a different order, omitted, or other operations may be added. Additionally, the embodiments disclosed in this document are presented for explanation and understanding of the disclosed technical content, and do not limit the scope of the technology described in this document. Therefore, the scope of this document should be interpreted as including all changes or various other embodiments based on the technical idea of this document.

Claims (20)

In electronic devices,
A display unit including a touch screen; and
A processor comprising:
Obtaining camera information including image information captured by an external photographing device and information related to the shooting posture of the external photographing device, and the image information is acquired by two fisheye lenses provided on the front and back of the external photographing device Contains omnidirectional image information in which a plurality of images are merged,
Generating an image to be displayed on the electronic device from the omnidirectional image information,
Using the obtained camera information, correct the generated image from the omnidirectional image information,
Considering the object recognition rate, the user's viewing angle, and the screen size of the display unit, controlling the display unit to display a portion of the view area corresponding to the area of interest among the corrected images,
When a viewpoint adjustment event occurs by manipulating the touch screen while displaying the corrected image on the display unit, information about the viewpoint adjustment event is transmitted to the external photographing device. Device.
According to paragraph 1,
The electronic device is characterized in that the information related to the photographing posture is information about a pitch angle, roll angle, and yaw angle detected by the external photographing device when photographing the image. delete delete delete delete delete delete delete delete In a method of controlling an electronic device,
An operation of acquiring camera information including image information captured by an external photographing device and information related to a photographing posture of the external photographing device, and the image information is transmitted to two fisheye lenses provided on the front and rear sides of the external photographing device. Contains omnidirectional image information in which a plurality of images obtained by merging,
An operation of generating an image to be displayed on the electronic device from the omnidirectional image information;
An operation of correcting the generated image from the omnidirectional image information using the obtained camera information;
An operation of displaying a portion of the view area corresponding to the area of interest among the corrected images in consideration of the object recognition rate, the user's viewing angle, and the screen size of the display unit;
When a view point adjustment event occurs by manipulating a touch screen while displaying the corrected image on the display unit, transmitting information about the view point adjustment event to the external photographing device. A control method of an electronic device.
According to clause 11,
The information related to the shooting posture is information about the pitch angle, roll angle, and yaw angle detected by the external photographing device when shooting the image. . delete delete delete delete delete delete delete delete

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