CN106709882A - Image fusion method and device - Google Patents
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Abstract
The invention discloses an image fusion method and device. The method comprises the following steps of: obtaining a first image acquired by a first camera and obtaining a second image acquired by a second camera, analyzing the second image and obtaining a focusing definition parameter of the second image, wherein the first image is a colored image and the second image is a grayscale image; and fusing the first image and the second image to generate a preview image when the focusing definition parameter of the second image is matched with a focusing definition threshold value.
Description
Technical Field
The present disclosure relates to electronic technologies, and in particular, to a method and an apparatus for image fusion.
Background
At present, when a mobile terminal performs fusion of two cameras, each camera acquires a color image and a gray-scale image, acquires color information of the color image and image information of the gray-scale image except the color information, and directly fuses the acquired color image and the gray-scale image.
Therefore, a technical solution for fusing images is needed to ensure that the grayscale images subjected to image fusion are high-quality images, and to improve the reliability of image fusion.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide an image fusion method and apparatus, which can ensure that an object to be subjected to image fusion is a high-quality image, and improve the quality of image fusion.
The technical scheme of the embodiment of the disclosure is realized as follows:
on one hand, a first image collected by a first camera is obtained, a second image collected by a second camera is obtained, the second image is analyzed, and the focusing definition parameter of the second image is obtained, wherein the first image is a color image, and the second image is a gray image; and when the focusing definition parameter of the second image is matched with the focusing definition threshold, fusing the first image and the second image to generate a preview image.
In one aspect, an image fusion apparatus provided in an embodiment of the present disclosure includes: the system comprises a first camera unit, a second camera unit, an acquisition unit and a fusion unit; the acquiring unit is configured to acquire a first image acquired by the first camera unit, acquire a second image acquired by the second camera unit, analyze the second image, and acquire a focusing sharpness parameter of the second image, where the first image is a color image and the second image is a grayscale image; and the fusion unit is used for fusing the first image and the second image to generate a preview image when the focusing definition parameter of the second image is matched with the focusing definition threshold.
The embodiment of the disclosure provides an image fusion method and device, wherein a first image acquired by a first camera is acquired, a second image acquired by a second camera is acquired, the second image is analyzed, and a focusing definition parameter of the second image is acquired, wherein the first image is a color image, and the second image is a gray image; and when the focusing definition parameter of the second image is matched with the focusing definition threshold, fusing the first image and the second image to generate a preview image, and when the focusing definition parameter of the black-white image subjected to image fusion meets the preset focusing definition threshold, namely the quality of the gray-scale image meets the focusing definition requirement, carrying out image fusion, ensuring that the object subjected to image fusion is a high-quality image, and improving the quality of image fusion.
Drawings
Fig. 1-1 is a schematic diagram of a hardware structure of an alternative mobile terminal for implementing various embodiments of the present disclosure;
fig. 1-2 is a schematic diagram of a wireless communication system for a mobile terminal as shown in fig. 1-1;
fig. 1-3 are schematic flow charts of a method for image fusion according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of an image fusion method according to a second embodiment of the disclosure;
fig. 3 is a schematic flowchart of an image fusion method provided in a third embodiment of the present disclosure;
fig. 4 is a schematic diagram of the sharpness effect of a color image and a grayscale image before adjustment in the third embodiment of the disclosure;
fig. 5 is a schematic diagram illustrating a sharpness effect of a gray image in adjustment according to a third embodiment of the disclosure;
fig. 6 is a schematic diagram illustrating a sharpness effect of the adjusted gray-scale image according to a third embodiment of the disclosure;
fig. 7 is a flowchart illustrating an image fusion method according to a fourth embodiment of the disclosure;
fig. 8 is a schematic structural diagram of an image fusion apparatus according to a fifth embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of another image fusion apparatus according to a fifth embodiment of the present disclosure.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of the present disclosure and do not limit the scope of the present disclosure.
A mobile terminal implementing various embodiments of the present disclosure will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present disclosure, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The mobile terminal may be implemented in various forms. For example, the terminal described in the present disclosure may include a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, and the like, and a stationary terminal such as a digital TV, a desktop computer, and the like. In the following, it is assumed that the terminal is a mobile terminal. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present disclosure can be applied to a fixed type terminal in addition to elements particularly used for moving purposes.
Fig. 1-1 is a schematic hardware structure of an optional mobile terminal for implementing various embodiments of the present disclosure.
The mobile terminal 100 may include a wireless communication unit 110, an a/V (audio/video) input unit 120, a user input unit 130, an output unit 150, a memory 160, an interface unit 170, a controller 180, and a power supply unit 190, and the like. Fig. 1-1 illustrates a mobile terminal having various components, but it is to be understood that not all illustrated components are required to be implemented. More or fewer components may alternatively be implemented. Elements of the mobile terminal will be described in detail below.
The wireless communication unit 110 typically includes one or more components that allow radio communication between the mobile terminal 100 and a wireless communication system or network. For example, the wireless communication unit may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short-range communication module 114, and a location information module 115.
The broadcast receiving module 111 receives a broadcast signal and/or broadcast associated information from an external broadcast management server via a broadcast channel. The broadcast channel may include a satellite channel and/or a terrestrial channel. The broadcast management server may be a server that generates and transmits a broadcast signal and/or broadcast associated information or a server that receives a previously generated broadcast signal and/or broadcast associated information and transmits it to a terminal. All-grass of Longtube FangThe broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and the like. Also, the broadcast signal may further include a broadcast signal combined with a TV or radio broadcast signal. The broadcast associated information may also be provided via a mobile communication network, and in this case, the broadcast associated information may be received by the mobile communication module 112. The broadcast signal may exist in various forms, for example, it may exist in the form of an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB), an Electronic Service Guide (ESG) of digital video broadcasting-handheld (DVB-H), and the like. The broadcast receiving module 111 may receive a signal broadcast by using various types of broadcasting systems. In particular, the broadcast receiving module 111 may receive a broadcast signal by using a signal such as multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video broadcasting-handheld (DVB-H), forward link media (MediaFLO)@) A digital broadcasting system of a terrestrial digital broadcasting integrated service (ISDB-T), etc. receives digital broadcasting. The broadcast receiving module 111 may be constructed to be suitable for various broadcasting systems that provide broadcast signals as well as the above-mentioned digital broadcasting systems. The broadcast signal and/or broadcast associated information received via the broadcast receiving module 111 may be stored in the memory 160 (or other type of storage medium).
The mobile communication module 112 transmits and/or receives radio signals to and/or from at least one of a base station (e.g., access point, node B, etc.), an external terminal, and a server. Such radio signals may include voice call signals, video call signals, or various types of data transmitted and/or received according to text and/or multimedia messages.
The wireless internet module 113 supports wireless internet access of the mobile terminal. The module may be internally or externally coupled to the terminal. The wireless internet access technology to which the module relates may include WLAN (wireless LAN) (Wi-Fi), Wibro (wireless broadband), Wimax (worldwide interoperability for microwave access), HSDPA (high speed downlink packet access), and the like.
The short-range communication module 114 is used for supporting short-range communicationAnd (5) a message module. Some examples of short-range communication technologies include bluetoothTMRadio Frequency Identification (RFID), infrared data association (IrDA), Near Field Communication (NFC), Ultra Wideband (UWB), zigbeeTM。And so on.
The location information module 115 is a module for checking or acquiring location information of the mobile terminal. A typical example of the location information module is a GPS (global positioning system). According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites and applies triangulation to the calculated information, thereby accurately calculating three-dimensional current location information according to longitude, latitude, and altitude. Currently, a method for calculating position and time information uses three satellites and corrects an error of the calculated position and time information by using another satellite. In addition, the GPS module 115 can calculate speed information by continuously calculating current position information in real time.
The a/V input unit 120 is used to receive an audio or video signal. The a/V input unit 120 may include a camera 121 and a microphone 1220, and the camera 121 processes image data of still pictures or video obtained by the image capturing apparatus 1210 in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 151. The image frames processed by the cameras 121 may be stored in the memory 160 (or other storage medium) or transmitted via the wireless communication unit 110, and two or more cameras 121 may be provided according to the construction of the mobile terminal. The microphone 122 may receive sounds (audio data) via the microphone in a phone call mode, a recording mode, a voice recognition mode, or the like, and can process such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the mobile communication module 112 in case of a phone call mode. The microphone 122 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The user input unit 130 may generate key input data according to a command input by a user to control various operations of the mobile terminal. The user input unit 130 allows a user to input various types of information, and may include a keyboard, dome sheet, touch pad (e.g., a touch-sensitive member that detects changes in resistance, pressure, capacitance, and the like due to being touched), scroll wheel, joystick, and the like. In particular, when the touch pad is superimposed on the display unit 151 in the form of a layer, a touch screen may be formed.
The interface unit 170 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The identification module may store various information for authenticating a user using the mobile terminal 100 and may include a User Identity Module (UIM), a Subscriber Identity Module (SIM), a Universal Subscriber Identity Module (USIM), and the like. In addition, a device having an identification module (hereinafter, referred to as an "identification device") may take the form of a smart card, and thus, the identification device may be connected with the mobile terminal 100 via a port or other connection means. The interface unit 170 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal and the external device.
In addition, when the mobile terminal 100 is connected with an external cradle, the interface unit 170 may serve as a path through which power is supplied from the cradle to the mobile terminal 100 or may serve as a path through which various command signals input from the cradle are transmitted to the mobile terminal. Various command signals or power input from the cradle may be used as signals for recognizing whether the mobile terminal is accurately mounted on the cradle. The output unit 150 is configured to provide output signals (e.g., audio signals, video signals, vibration signals, etc.) in a visual, audio, and/or tactile manner. The output unit 150 may include a display unit 151, an audio output module 152, an alarm unit 153, and the like.
The display unit 151 may display information processed in the mobile terminal 100. For example, when the mobile terminal 100 is in a phone call mode, the display unit 151 may display a User Interface (UI) or a Graphical User Interface (GUI) related to a call or other communication (e.g., text messaging, multimedia file downloading, etc.). When the mobile terminal 100 is in a video call mode or an image capturing mode, the display unit 151 may display a captured image and/or a received image, a UI or GUI showing a video or an image and related functions, and the like.
Meanwhile, when the display unit 151 and the touch pad are overlapped with each other in the form of a layer to form a touch screen, the display unit 151 may serve as an input device and an output device. The display unit 151 may include at least one of a Liquid Crystal Display (LCD), a thin film transistor LCD (TFT-LCD), an Organic Light Emitting Diode (OLED) display, a flexible display, a three-dimensional (3D) display, and the like. Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be referred to as transparent displays, and a typical transparent display may be, for example, a TOLED (transparent organic light emitting diode) display or the like. Depending on the particular desired implementation, the mobile terminal 100 may include two or more display units (or other display devices), for example, the mobile terminal may include an external display unit (not shown) and an internal display unit (not shown). The touch screen may be used to detect a touch input pressure as well as a touch input position and a touch input area.
The audio output module 152 may convert audio data received by the wireless communication unit 110 or stored in the memory 160 into an audio signal and output as sound when the mobile terminal is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output module 152 may provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output module 152 may include a speaker, a buzzer, and the like.
The memory 160 may store software programs and the like for processing and controlling operations performed by the controller 180, or may temporarily store data (e.g., a phonebook, messages, still images, videos, and the like) that has been or will be output. Also, the memory 160 may store data regarding various ways of vibration and audio signals output when a touch is applied to the touch screen.
The memory 160 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, and the like. Also, the mobile terminal 100 may cooperate with a network storage device that performs a storage function of the memory 160 through a network connection.
The controller 180 generally controls the overall operation of the mobile terminal. For example, the controller 180 performs control and processing related to voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 1810 for reproducing or playing back multimedia data, and the multimedia module 1810 may be constructed within the controller 180 or may be constructed to be separated from the controller 180. The controller 180 may perform a pattern recognition process to recognize a handwriting input or a picture drawing input performed on the touch screen as a character or an image.
The power supply unit 190 receives external power or internal power and provides appropriate power required to operate various elements and components under the control of the controller 180.
The various embodiments described herein may be implemented in a computer-readable medium using, for example, computer software, hardware, or any combination thereof. For a hardware implementation, the embodiments described herein may be implemented using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, an electronic unit designed to perform the functions described herein, and in some cases, such embodiments may be implemented in the controller 180. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in the memory 160 and executed by the controller 180.
Up to this point, mobile terminals have been described in terms of their functionality. Hereinafter, a slide-type mobile terminal among various types of mobile terminals, such as a folder-type, bar-type, swing-type, slide-type mobile terminal, and the like, will be described as an example for the sake of brevity. Accordingly, the present disclosure can be applied to any type of mobile terminal, and is not limited to a slide type mobile terminal.
The mobile terminal 100 as shown in fig. 1-1 may be configured to operate with communication systems such as wired and wireless communication systems and satellite-based communication systems that transmit data via frames or packets.
A communication system in which a mobile terminal according to the present disclosure is operable will now be described with reference to fig. 1-2.
Such communication systems may use different air interfaces and/or physical layers. For example, the air interface used by the communication system includes, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and Universal Mobile Telecommunications System (UMTS) (in particular, Long Term Evolution (LTE)), global system for mobile communications (GSM), and the like. By way of non-limiting example, the following description relates to a CDMA communication system, but such teachings are equally applicable to other types of systems.
Referring to fig. 1-2, a CDMA wireless communication system may include a plurality of mobile terminals 100, a plurality of Base Stations (BSs) 270, Base Station Controllers (BSCs) 275, and a Mobile Switching Center (MSC) 280. The MSC280 is configured to interface with a Public Switched Telephone Network (PSTN) 290. The MSC280 is also configured to interface with a BSC275, which may be coupled to the base station 270 via a backhaul. The backhaul may be constructed according to any of several known interfaces including, for example, E1/T1, ATM, IP, PPP, frame Relay, HDSL, ADSL, or xDSL. It will be understood that a system as shown in fig. 1-2 may include multiple BSCs 2750.
Each BS270 may serve one or more sectors (or regions), each sector covered by a multi-directional antenna or an antenna pointing in a particular direction being radially distant from the BS 270. Alternatively, each partition may be covered by two or more antennas for diversity reception. Each BS270 may be configured to support multiple frequency allocations, with each frequency allocation having a particular frequency spectrum (e.g., 1.25MHz, 5MHz, etc.).
The intersection of partitions with frequency allocations may be referred to as a CDMA channel. The BS270 may also be referred to as a Base Transceiver Subsystem (BTS) or other equivalent terminology. In such a case, the term "base station" may be used to generically refer to a single BSC275 and at least one BS 270. The base stations may also be referred to as "cells". Alternatively, each sector of a particular BS270 may be referred to as a plurality of cell sites.
As shown in fig. 1-2, a Broadcast Transmitter (BT)295 transmits broadcast signals to mobile terminals 100 operating within the system. The broadcast receiving module 111 as shown in fig. 1-1 is provided at the mobile terminal 100 to receive a broadcast signal transmitted by the BT 295. In fig. 1-2, several Global Positioning System (GPS) satellites 300 are shown. The satellite 300 assists in locating at least one of the plurality of mobile terminals 100.
In fig. 1-2, a plurality of satellites 300 are depicted, but it is understood that useful positioning information may be obtained with any number of satellites. The GPS module 115 as shown in fig. 1-1 is generally configured to cooperate with the satellites 300 to obtain desired positioning information. Other techniques that can track the location of the mobile terminal may be used instead of or in addition to GPS tracking techniques. In addition, at least one GPS satellite 300 may selectively or additionally process satellite DMB transmission.
As a typical operation of the wireless communication system, the BS270 receives reverse link signals from various mobile terminals 100. The mobile terminal 100 is generally engaged in conversations, messaging, and other types of communications. Each reverse link signal received by a particular base station 270 is processed within the particular BS 270. The obtained data is forwarded to the associated BSC 275. The BSC provides call resource allocation and mobility management functions including coordination of soft handoff procedures between BSs 270. The BSCs 275 also route the received data to the MSC280, which provides additional routing services for interfacing with the PSTN 290. Similarly, the PSTN290 interfaces with the MSC280, the MSC interfaces with the BSCs 275, and the BSCs 275 accordingly control the BS270 to transmit forward link signals to the mobile terminal 100.
Various embodiments of the present disclosure are proposed below to further elaborate the technical solutions of the present disclosure based on the above-mentioned hardware structure of the mobile terminal.
The first embodiment is as follows:
the disclosed embodiment provides an image fusion method, which is applied to a terminal, wherein the functions realized by the method can be realized by calling a program code through a processor in the terminal, and the program code can be saved in a computer storage medium.
Fig. 1-3 are schematic flow diagrams of a method for image fusion according to a first embodiment of the disclosure, as shown in fig. 1-3, the method includes:
s101, acquiring a first image acquired by a first camera and a second image acquired by a second camera, analyzing the second image, and acquiring a focusing definition parameter of the second image;
when the terminal with the double cameras is used for photographing, recording and the like, the terminal with the double cameras collects color images and gray images through the first camera and the second camera respectively, wherein the photographing objects of the color images and the black and white images are the same. Here, the images collected by the first camera and the second camera are respectively a color image with emphasis on image color information and a gray image with emphasis on image information other than the color information, where the image information other than the color information may include: brightness information, focus sharpness parameters, etc. The focusing definition parameter may be a resolution or other parameters that characterize the definition of the image.
Here, after the color image and the grayscale image are acquired through the first camera and the second camera, image fusion is not immediately performed to generate a preview photograph, but the acquired images are buffered so as to analyze the acquired images.
Here, the first camera and the second camera can be a main camera and a sub camera respectively, and the acquisition of the image of the shooting object by the two cameras is realized.
When images aiming at the same shooting object are respectively collected through the first camera and the second camera, the gray level image collected by the second camera is analyzed, and the focusing definition of the gray level image collected by the second camera is obtained.
And S102, when the focusing definition parameter of the second image is matched with the focusing definition threshold, fusing the first image and the second image to generate a preview image.
And after the focusing definition parameter of the second image is obtained, comparing the obtained focusing definition parameter of the gray level image with the focusing definition threshold value. Here, the focus clarity threshold may be a reference value set by a user or set by a system that characterizes the clarity requirement for an image. Here, the focus sharpness threshold may also be a focus sharpness parameter of the color image of the first camera, and at this time, the grayscale image and the color image are compared to determine whether the sharpness of the grayscale image is greater than that of the color image.
When a user inputs a focusing definition threshold value, a display interface with an input interface can be displayed before the camera is opened for image acquisition or after the camera is opened for image acquisition, and the focusing definition threshold value input by the user is received through the input interface.
And comparing the focusing definition parameter of the second image with the focusing definition threshold, when the focusing definition parameter of the second image is matched with the definition threshold, the definition of the second image meets the definition requirement of the gray level image, and when the focusing definition parameter of the second image is not matched with the definition threshold, the definition of the second image does not meet the definition requirement of the gray level image.
Determining whether the focusing definition parameter of the second image is matched with a definition threshold, specifically:
comparing the focus sharpness parameter of the second image to a focus sharpness threshold;
when the focusing definition parameter and the focusing definition threshold of the second image meet one of the following matching conditions, determining that the focusing definition parameter and the focusing definition threshold of the second image are matched:
the value of the focus sharpness parameter of the second image is greater than the focus sharpness threshold;
the value of the focus sharpness parameter of the second image is equal to the focus sharpness threshold;
the difference of the value of the focus clarity parameter of the second image relative to the focus clarity threshold is less than the focus clarity difference threshold.
Otherwise, determining that the definition parameter of the second image does not match the definition threshold.
And under the condition that the difference value of the focusing definition parameter of the second image relative to the focusing definition threshold is smaller than the focusing definition difference threshold, the definition parameter of the second image is smaller than the definition threshold, but when the degree that the focusing definition parameter is smaller than the focusing definition threshold is in the receivable range, the focusing definition parameter of the second image is considered to be matched with the focusing definition threshold. The focusing definition difference threshold value can be set according to requirements.
And when the focusing definition parameter of the second image is determined to be matched with the focusing definition threshold, fusing the first image and the second image. Here, the first image and the second image are fused, that is, the color image and the grayscale image are fused to obtain the preview image, and the image fusion algorithm for fusing the color image and the grayscale image may adopt an image fusion algorithm in the prior art, which is not described herein again.
It should be noted that, when the terminal receives a camera opening operation of a user, regardless of whether a photographing or video recording function is triggered, the first camera and the second camera may respectively acquire the first image and the second image at this time, and perform fusion of the first image and the second image, or perform fusion of the first image and the second image when an operation instruction corresponding to the photographing operation or the video recording operation is received. Here, the image fusion is performed when the photographing operation or the video recording operation is not received, the preview image obtained by the fusion is displayed, and the image fusion is performed when the photographing operation or the video recording operation is received, and the preview image obtained by the fusion is displayed and stored.
In the embodiment of the disclosure, when a terminal with two cameras performs image fusion, the two cameras respectively acquire a color image and a gray image of the same shooting object, and when a focusing definition parameter of the gray image is matched with a focusing definition threshold, the image fusion is performed, so that the definition of the gray image subjected to the image fusion meets the requirement of the image definition, the image is high-quality, and the condition that the fused image color meets but is fuzzy is avoided.
Example two:
based on the foregoing embodiments, the embodiments of the present disclosure provide an image fusion method, where the method is applied to a terminal, and functions implemented by the method may be implemented by a processor in the terminal calling a program code, where of course, the program code may be stored in a computer storage medium, and thus, the terminal at least includes the processor and the storage medium.
Fig. 2 is a schematic flowchart of a method for image fusion in a second embodiment of the disclosure, as shown in fig. 2, the method includes:
s201, acquiring a first image acquired by a first camera, acquiring a second image acquired by a second camera, analyzing the second image, and acquiring a focusing definition parameter of the second image;
here, the first image is a color image, and the second image is a grayscale image.
S202, analyzing a first image of the first camera to obtain a focusing definition parameter of the first image, and determining the focusing definition parameter of the first image as the focusing definition threshold;
and when the focusing definition parameter of the color image is obtained, the value of the focusing definition parameter of the color image is used as a focusing definition threshold value to be matched with the focusing definition parameter of the gray image.
At this time, during matching, the matched object is a color image acquired by the first camera and a grayscale image acquired by the second camera, and when the focusing definition parameter of the grayscale image and the focusing definition parameter of the color image satisfy one of the following matching conditions, it is determined that the focusing definition parameter of the grayscale image matches the focusing definition parameter of the color image, as in the matching method of the above embodiment:
the value of the focusing definition parameter of the gray level image is greater than that of the color image; at this time, the grayscale image is clearer than the color image.
The value of the focusing definition parameter of the gray level image is equal to the value of the focusing definition of the color image; at this time, the gradation image and the color image have the same definition.
The difference of the value of the focus sharpness parameter of the gray image relative to the value of the focus sharpness of the color image is less than the focus sharpness difference threshold. At this time, the grayscale image is slightly blurred compared to the color image, but the degree of blurring is within an acceptable range.
When any one of the above conditions is satisfied, the focusing definition parameter of the gray image is considered to be matched with the focusing definition parameter of the color image, and the definition of the gray image satisfies the requirement.
And S203, when the focusing definition parameter of the second image is matched with the focusing definition threshold, fusing the first image and the second image to generate a preview image.
In the embodiment of the disclosure, after the color image and the grayscale image are respectively acquired by the two cameras, the focusing definition parameter of the grayscale image and the focusing definition parameter of the color image are matched to compare the image acquired by the black-and-white camera with the image acquired by the color camera, and the color image and the grayscale image are fused when the definition of the black-and-white image is determined to be matched with the color image, that is, the definition of the black-and-white image is better than that of the color camera or the definition of the black-and-white image is worse than that of the color image but within an acceptable range.
Example three:
the disclosed embodiment provides an image fusion method, which is applied to a terminal, wherein the functions realized by the method can be realized by calling a program code through a processor in the terminal, and the program code can be saved in a computer storage medium.
Fig. 3 is a schematic flowchart of a method for image fusion in a third embodiment of the present disclosure, as shown in fig. 3, the method includes:
s301, acquiring a first image acquired by a first camera, acquiring a second image acquired by a second camera, analyzing the second image, and acquiring a focusing definition parameter of the second image;
here, the first image is a color image, and the second image is a grayscale image.
S302, when the focusing definition parameter of the second image is not matched with the focusing definition threshold, acquiring focusing information of the second camera, and adjusting the focusing information of the second camera to control the second camera to perform focusing adjustment until the focusing definition parameter of the second image is matched with the focusing definition threshold;
here, when the focusing definition of the grayscale image is not matched with the focusing definition threshold, it indicates that the definition of the current grayscale image does not meet the quality requirement, and at this time, the focusing adjustment is performed on the second camera, and the specific adjustment mode includes:
adjusting the focusing information of the second camera, comparing the focusing definition parameter of the gray level image collected by the second camera with the focusing definition threshold value while adjusting, stopping adjusting when the focusing definition parameter of the gray level image collected by the second camera is matched with the focusing definition threshold value, otherwise, continuously adjusting the focusing information of the second camera,
in the adjustment mode, the adjustment times of the focusing information of the second camera are not limited, and whether to stop adjusting the focusing information is determined by taking the focusing definition parameter of the gray level image acquired by the camera after the focusing information is adjusted as a reference.
Here, in the adjustment process of the focusing information, an adjustment rule may be determined according to a relationship between the focusing information and a value of a focusing sharpness parameter of the grayscale image, and regular adjustment is performed according to the adjustment rule, so that the focusing information is adjusted as soon as possible to match the focusing sharpness parameter of the grayscale image corresponding to the adjusted focusing information with the focusing sharpness threshold, thereby increasing the adjustment speed. The specific adjustment rule may be set according to a relationship between the size of the focus distance and the value of the focus sharpness parameter of the grayscale image, which is not limited in any way by the embodiment of the present disclosure.
In the embodiment of the present disclosure, the focusing definition parameter of the color image acquired by the first camera may be used as a focusing definition threshold, and the focusing definition parameter is matched with the focusing definition parameter of the grayscale image, so as to determine whether the image quality of the grayscale image meets the requirement.
Here, the method of fusing images will be described by taking the focus resolution parameter of the color image acquired by the first camera as a focus resolution threshold as an example.
As shown in fig. 4, fig. 4(a) is a schematic diagram of the sharpness of a color image captured by the first camera, and the image shown in fig. 4(a) is analyzed to obtain a focus sharpness parameter, and the value of the focus sharpness parameter of the obtained color image is L1, and it should be noted that, in fig. 4(a), the color image is shown in a grayscale form, and the color information of the color image is not shown.
Fig. 4(b) is a schematic diagram of the sharpness of the grayscale image captured by the second camera, and the image shown in fig. 4(b) is analyzed to obtain the focus sharpness parameter, and the value of the focus sharpness parameter of the obtained grayscale image is L2. At this time, L1<L2, and the difference L between L1 and L2 is greater than TLAnd at the moment, if the focusing definition parameter of the gray level image is not matched with the focusing definition parameter of the color image, adjusting the focusing information of the second camera.
In the process of adjusting the focusing information of the second camera corresponding to the grayscale image, the grayscale image collected by the second camera may be displayed on the display interface, and here, as shown in fig. 5, when the focusing sharpness value L1 of the grayscale image is equal to L2, the user may be prompted whether to continue to adjust the sharpness of the grayscale image.
The adjusted focusing information of the second camera is the adjusted focusing information, the gray level image collected by the second camera corresponding to the adjusted focusing information is shown in fig. 6, at this time, the value L1 of the focusing definition parameter of the gray level image is greater than L2, and the focusing definition parameter of the gray level image is matched with the focusing definition parameter of the color image. The definition of the grayscale image is considered to satisfy the requirement for the grayscale image quality.
And S303, when the focusing definition parameter of the second image is matched with the focusing definition threshold, fusing the first image and the second image to generate a preview image.
Here, the color image corresponding to the image shown in fig. 4(a) and the image shown in fig. 6 are fused, and the color information of the fused preview image is the color information of the color image, and the image information other than the color information, for example, the sharpness information is the sharpness information of the gray scale image. Thereby obtaining a high quality preview image with high color quality and high definition.
In the embodiment of the disclosure, when the focusing definition parameter of the gray image of the second camera is not matched with the focusing definition threshold, the gray image with the focusing definition parameter matched with the focusing definition threshold can be obtained by adjusting the focusing information of the second camera, so that the gray image meeting the definition quality requirement is obtained after adjustment, and the gray images meeting the definition quality requirement are fused to obtain the high-quality preview image.
Example four:
based on the foregoing embodiments, the embodiments of the present disclosure provide an image fusion method, where the method is applied to a terminal, and functions implemented by the image fusion method may be implemented by a processor in the terminal calling a program code, where of course, the program code may be stored in a computer storage medium, and thus, the terminal at least includes the processor and the storage medium.
Fig. 7 is a schematic flowchart of a method for image fusion in a fourth embodiment of the disclosure, as shown in fig. 7, the method includes:
s701, acquiring a first image acquired by a first camera, acquiring a second image acquired by a second camera, analyzing the second image, and acquiring a focusing definition parameter of the second image;
here, the first image is a color image, and the second image is a grayscale image.
S702, analyzing a first image of the first camera to obtain a focusing definition parameter of the first image, and determining the focusing definition parameter of the first image as the focusing definition threshold;
s703, when the focusing definition parameter of the second image is not matched with the focusing definition threshold, acquiring the focusing information of the second camera, adjusting the focusing information of the second camera for a preset number of times to obtain adjusted focusing information, and acquiring a third image of the second camera of which the focusing information is the adjusted focusing information;
when the focusing definition parameter of the gray-scale image is not matched with the focusing definition parameter of the color image, it indicates that the definition of the current gray-scale image is worse than that of the color image, and the gray-scale image does not meet the quality requirement, and at this time, the focusing adjustment is performed on the second camera, and the specific adjustment mode may refer to the adjustment mode in S302 in the third embodiment.
Here, the number of times of adjustment is counted, and when the number of times of adjustment of the focusing parameter is adjusted by a preset number of times, it is considered that it takes a relatively long time to adjust the grayscale image, and if the adjustment is continued, it wastes more time for the user. At this time, the gray level image corresponding to the focusing information after the preset times of adjustment and the focusing definition parameter of the gray level image are obtained.
The preset times can be set systematically and in advance or according to the adjustment time.
S704, when the focusing definition parameter of the third image is not matched with the focusing definition threshold, outputting the first image of the first camera to generate the preview image.
And when the focusing definition parameter of the gray-scale image corresponding to the adjusted focusing parameter is still not matched with the focusing definition parameter of the color image, abandoning the gray-scale image and only adopting the color image when performing image fusion, and directly outputting the color image as the fused preview image.
S705, when the focusing definition parameter of the third image is matched with the focusing definition threshold, the first image and the third image are fused to generate a preview image.
In the embodiment of the disclosure, when the focusing definition parameter of the grayscale image is not matched with the grayscale definition parameter of the color image and the focusing information of the camera corresponding to the grayscale image is adjusted to a certain extent, and the focusing definition parameter of the grayscale image is still not matched with the grayscale definition parameter of the color image, the grayscale image is abandoned and the color image is directly output as the preview image during image fusion, so that the output preview image is ensured to be a high-quality preview image on the premise of not wasting the user experience.
Example five:
based on the foregoing method embodiment, an embodiment of the present disclosure provides an apparatus 800 for image fusion, as shown in fig. 8, the apparatus 800 includes: a first image capturing unit 801, a second image capturing unit 802, an acquisition unit 803, and a fusion unit 804; wherein,
an obtaining unit 803, configured to obtain a first image collected by a first image capturing unit 801, obtain a second image collected by a second image capturing unit 802, analyze the second image, and obtain a focusing sharpness parameter of the second image, where the first image is a color image, and the second image is a grayscale image;
and a fusion unit 804, configured to fuse the first image and the second image to generate a preview image when the focusing sharpness parameter of the second image matches the focusing sharpness threshold.
As shown in fig. 9, the apparatus 800 further comprises: a comparison unit 805 configured to:
comparing the focus sharpness parameter of the second image to a focus sharpness threshold;
when the focusing definition parameter and the focusing definition threshold of the second image meet one of the following matching conditions, determining that the focusing definition parameter and the focusing definition threshold of the second image are matched:
the value of the focus sharpness parameter of the second image is greater than the focus sharpness threshold;
the value of the focus sharpness parameter of the second image is equal to the focus sharpness threshold;
the difference of the value of the focus clarity parameter of the second image relative to the focus clarity threshold is less than the focus clarity difference threshold.
In the embodiment of the present disclosure, as shown in fig. 9, the apparatus 800 further includes: a determining unit 806 configured to:
analyzing the first image of the first camera to obtain the focusing definition parameter of the first image, and determining the focusing definition parameter of the first image as the focusing definition threshold.
In the embodiment of the present disclosure, as shown in fig. 9, the apparatus 800 further includes: a first adjusting unit 807 for:
and when the focusing definition parameter of the second image is not matched with the focusing definition threshold, acquiring the focusing information of the second camera unit, and adjusting the focusing information of the second camera unit to control the second camera unit to perform focusing adjustment until the focusing definition parameter of the second image is matched with the focusing definition threshold.
In the embodiment of the present disclosure, as shown in fig. 9, the apparatus 800 further includes: a second adjusting unit 808, configured to: when the focusing definition parameter of the second image is not matched with the focusing definition threshold, acquiring focusing information of the second camera, adjusting the focusing information of the second camera for preset times to obtain adjusted focusing information, and acquiring a third image of the second camera of which the focusing information is the adjusted focusing information;
the fusing unit 803 is further configured to output the first image of the first camera to generate the preview image when the focusing sharpness parameter of the third image is not matched with the focusing sharpness threshold.
In practical applications, the first camera unit 801 and the second camera unit can be cameras, which correspond to the image capturing device 1210 in fig. 1-1. The acquisition unit 803, the fusion unit 804, the comparison unit 805, the determination unit 806, the first adjustment unit 807, and the second adjustment unit 808 correspond to the controller 180 in fig. 1-1.
Here, it should be noted that: the descriptions of the embodiments of the apparatus are similar to the descriptions of the methods, and have the same advantages as the embodiments of the methods, and therefore are not repeated herein. For technical details that are not disclosed in the embodiments of the apparatus of the present disclosure, those skilled in the art should refer to the description of the embodiments of the method of the present disclosure to understand, and for the sake of brevity, detailed description is omitted here.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present disclosure, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure. The above-mentioned serial numbers of the embodiments of the present disclosure are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of a unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of S for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer-readable storage medium, and when executed, executes S including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.
Alternatively, the integrated unit of the present disclosure may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods of the embodiments of the present disclosure. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.
The above is only a specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present disclosure, and shall be covered by the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. A method of image fusion, the method comprising:
acquiring a first image acquired by a first camera, acquiring a second image acquired by a second camera, analyzing the second image, and acquiring a focusing definition parameter of the second image, wherein the first image is a color image, and the second image is a gray image;
and when the focusing definition parameter of the second image is matched with the focusing definition threshold, fusing the first image and the second image to generate a preview image.
2. The method of claim 1, further comprising:
comparing the focus sharpness parameter of the second image to a focus sharpness threshold;
when the focusing definition parameter and the focusing definition threshold of the second image meet one of the following matching conditions, determining that the focusing definition parameter and the focusing definition threshold of the second image are matched:
the value of the focus sharpness parameter of the second image is greater than the focus sharpness threshold;
the value of the focus sharpness parameter of the second image is equal to the focus sharpness threshold;
the difference of the value of the focus clarity parameter of the second image relative to the focus clarity threshold is less than the focus clarity difference threshold.
3. The method of claim 1, further comprising:
analyzing the first image of the first camera to obtain the focusing definition parameter of the first image, and determining the focusing definition parameter of the first image as the focusing definition threshold.
4. The method of claim 1, further comprising:
and when the focusing definition parameter of the second image is not matched with the focusing definition threshold, acquiring the focusing information of the second camera, and adjusting the focusing information of the second camera to control the second camera to perform focusing adjustment until the focusing definition parameter of the second image is matched with the focusing definition threshold.
5. The method of claim 3, further comprising:
when the focusing definition parameter of the second image is not matched with the focusing definition threshold, acquiring focusing information of the second camera, adjusting the focusing information of the second camera for preset times to obtain adjusted focusing information, and acquiring a third image of the second camera of which the focusing information is the adjusted focusing information;
and when the focusing definition parameter of the third image is not matched with the focusing definition threshold, outputting the first image of the first camera to generate the preview image.
6. An apparatus for image fusion, the apparatus comprising: the system comprises a first camera unit, a second camera unit, an acquisition unit and a fusion unit; wherein,
the acquiring unit is used for acquiring a first image acquired by the first camera unit, acquiring a second image acquired by the second camera unit, analyzing the second image, and acquiring a focusing definition parameter of the second image, wherein the first image is a color image, and the second image is a gray image;
and the fusion unit is used for fusing the first image and the second image to generate a preview image when the focusing definition parameter of the second image is matched with the focusing definition threshold.
7. The apparatus of claim 6, further comprising: a comparison unit for:
comparing the focus sharpness parameter of the second image to a focus sharpness threshold;
when the focusing definition parameter and the focusing definition threshold of the second image meet one of the following matching conditions, determining that the focusing definition parameter and the focusing definition threshold of the second image are matched:
the value of the focus sharpness parameter of the second image is greater than the focus sharpness threshold;
the value of the focus sharpness parameter of the second image is equal to the focus sharpness threshold;
the difference of the value of the focus clarity parameter of the second image relative to the focus clarity threshold is less than the focus clarity difference threshold.
8. The apparatus of claim 6, further comprising: a determination unit configured to:
analyzing the first image of the first camera to obtain the focusing definition parameter of the first image, and determining the focusing definition parameter of the first image as the focusing definition threshold.
9. The apparatus of claim 6, further comprising: a first adjustment unit to:
and when the focusing definition parameter of the second image is not matched with the focusing definition threshold, acquiring the focusing information of the second camera unit, and adjusting the focusing information of the second camera unit to control the second camera unit to perform focusing adjustment until the focusing definition parameter of the second image is matched with the focusing definition threshold.
10. The apparatus of claim 8, further comprising: a second adjustment unit for: when the focusing definition parameter of the second image is not matched with the focusing definition threshold, acquiring focusing information of the second camera, adjusting the focusing information of the second camera for preset times to obtain adjusted focusing information, and acquiring a third image of the second camera of which the focusing information is the adjusted focusing information;
and the fusion unit is further used for outputting the first image of the first camera to generate the preview image when the focusing definition parameter of the third image is not matched with the focusing definition threshold.
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