CN107248137B - Method for realizing image processing and mobile terminal - Google Patents
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Abstract
The embodiment of the invention provides a method for realizing image processing and a mobile terminal, comprising the following steps: calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera; determining three splicing areas formed by the first visual angle image and the second visual angle image when splicing according to the depth value obtained by calculation; adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value; the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera. The embodiment of the invention avoids the light and shade change during image synthesis, improves the display quality of the spliced image and improves the use experience of users.
Description
Technical Field
The present invention relates to multimedia technologies, and in particular, to a method and a mobile terminal for implementing image processing.
Background
The visual angle can be improved by photographing through the binocular camera on the mobile terminal, but the flash lamp of the mobile terminal is arranged on one side of the binocular camera, so that when a close shot is shot, due to the distance problem between the binocular camera and the flash lamp, the light supplementing effect obtained by the camera on one side far away from the flash lamp is different from the light supplementing effect obtained by the camera close to the flash lamp, obvious light and shade contrast occurs, and when image synthesis is carried out, obvious light and shade change occurs, and the edge part cannot carry out image content resolution.
Disclosure of Invention
In view of the above technical problems, embodiments of the present invention provide a method and a mobile terminal for implementing image processing, which can improve image display quality and user experience.
The embodiment of the invention provides a method for realizing image processing, which comprises the following steps:
calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera;
determining three splicing areas formed by the first visual angle image and the second visual angle image when splicing according to the depth value obtained by calculation;
adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value;
the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera.
Optionally, the first perspective image is a left perspective image, the second perspective image is a right perspective image, and calculating the depth value of each pixel point in the first perspective image and the second perspective image acquired by the binocular camera includes:
and for each pixel point in the first visual angle image, searching a matching point matched with the pixel point from the second visual angle image through an image matching technology, and calculating the depth value of the pixel point according to a triangulation technology.
Optionally, the first perspective image is a left perspective image, the second perspective image is a right perspective image, the first stitched image region is a left stitched image region, and the second stitched image region is a right stitched image region; determining three splicing areas composed of the first view image and the second view image when splicing according to the calculated depth values comprises:
mapping pixels of a right region of the left view image to a left boundary of the right stitched image region; mapping pixels of the coordinate area of the right view image to the right boundary of the left stitched image area;
wherein, when the pixel of the right region of the left view image is Pl (x, y) and the depth value is Dl (x, y), the pixel coordinate x1, which is mapped to the left boundary of the right stitched image region, is x-Dl (x, y), and y1 is y; when the pixel of the left region of the right view image is Pr (x, y) and the depth value is Dr (x, y), the pixel coordinate x2 mapped to the right boundary of the left stitched image region is x + Dr (x, y), and y2 is y.
Optionally, the luminance information includes a pixel luminance mean value M1 of the first stitched image region, a pixel luminance mean value M2 of the middle stitched image region, and a pixel luminance mean value M3 of the second stitched image region, and the distance parameters include spatial distances D12 of center points P1, P2, P3, P1, and P2, and spatial distances D23 of center points P2, and P3 of the first stitched image region, the middle stitched image region, and the second stitched image region, of the three stitched regions.
Optionally, the adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area includes:
for each pixel point P of the first splicing image areaP1(x, y), pixel PP1(x, y) is a distance D from the center point P2 of the Merge image region1(x, y), the brightness of which is adjusted to:
for each pixel point P of the second splicing image areaP2(x, y), pixel PP2(x, y) is a distance D from the center point P2 of the Merge image region2(x, y), the brightness of which is adjusted to:
in another aspect, an embodiment of the present invention further provides a mobile terminal, including:
a first camera configured to capture a first perspective image;
a second camera configured to capture a second perspective image;
a memory storing a picture processing program;
a processor configured to execute the image processing program to perform operations of:
calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera;
determining three splicing areas formed by the first visual angle image and the second visual angle image when splicing according to the depth value obtained by calculation;
adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value;
the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera.
Optionally, the first perspective image is a left perspective image, the second perspective image is a right perspective image, and the processor configured to execute the image processing program to calculate the depth value of each pixel point in the first perspective image and the second perspective image acquired by the binocular camera includes:
and for each pixel point in the first visual angle image, searching a matching point matched with the pixel point from the second visual angle image through an image matching technology, and calculating the depth value of the pixel point according to a triangulation technology.
Optionally, the first perspective image is a left perspective image, the second perspective image is a right perspective image, the first stitched image region is a left stitched image region, and the second stitched image region is a right stitched image region; the processor configured to execute the image processing program to determine, from the calculated depth values, three stitched regions composed of the first view image and the second view image when stitched, includes:
mapping pixels of a right region of the left view image to a left boundary of the right stitched image region; mapping pixels of the coordinate area of the right view image to the right boundary of the left stitched image area;
wherein, when the pixel of the right region of the left view image is Pl (x, y) and the depth value is Dl (x, y), the pixel coordinate x1, which is mapped to the left boundary of the right stitched image region, is x-Dl (x, y), and y1 is y; when the pixel of the left region of the right view image is Pr (x, y) and the depth value is Dr (x, y), the pixel coordinate x2 mapped to the right boundary of the left stitched image region is x + Dr (x, y), and y2 is y.
Optionally, the luminance information includes a pixel luminance mean value M1 of the first stitched image region, a pixel luminance mean value M2 of the middle stitched image region, and a pixel luminance mean value M3 of the second stitched image region, and the distance parameters include a spatial distance D12 of a center point P1 of the first stitched image region, a center point P2 of the middle stitched image region, a center point P3 of the second stitched image region, center points P1 and P2, and a spatial distance D23 of center points P2 and P3 of the three stitched regions; the processor, configured to execute the image processing program to perform brightness adjustment on the spliced area according to the brightness information and the distance parameter of the spliced area, includes:
for each pixel point P of the first splicing image areaP1(x, y), pixel PP1(x, y) is a distance D from the center point P2 of the Merge image region1(x, y), the brightness of which is adjusted to:
for each pixel point P of the second splicing image areaP2(x, y), pixel PP2(x, y) is a distance D from the center point P2 of the Merge image region2(x, y), the brightness of which is adjusted to:
in still another aspect, the present invention provides a computer-readable storage medium, which stores one or more programs that are executable by one or more processors to implement the steps of the method for image processing described above.
Compared with the related art, the technical scheme of the embodiment of the invention comprises the following steps: calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera; determining three splicing areas formed by the first visual angle image and the second visual angle image when splicing according to the depth value obtained by calculation; adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value; the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera. The embodiment of the invention avoids the light and shade change during image synthesis, improves the display quality of the spliced image and improves the use experience of users.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic hardware structure of an optional mobile terminal for implementing various embodiments of the present invention;
FIG. 2 is a flowchart of a method for displaying an image according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a positional relationship between a binocular camera and a flashlight according to an embodiment of the present invention;
FIG. 4a is a schematic diagram of a left view image according to an embodiment of the present invention;
FIG. 4b is a diagram of a right view image according to an embodiment of the present invention;
FIG. 4c is a schematic diagram illustrating a depth value of a pixel point according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a triangulation technique according to an embodiment of the invention;
FIG. 6 is a schematic diagram of the composition of a splicing region according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating a method for displaying an image according to another embodiment of the present invention;
fig. 8 is a block diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.
The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.
Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The following describes each component of the mobile terminal in detail with reference to fig. 1:
the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).
WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 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 unit 103 may also 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 unit 103 may include a speaker, a buzzer, and the like.
The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing 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 radio frequency unit 101 in case of a phone call mode. The microphone 1042 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 mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.
The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect touch operations performed by a user on or near the touch panel 1071 (e.g., operations performed by the user on or near the touch panel 1071 using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.
Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation on or near the touch panel 1071, the touch panel transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding viewing angle output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.
The interface unit 108 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 interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices 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 100 and external devices.
The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.
Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.
Based on the hardware structure of the mobile terminal, the invention provides various embodiments of the method.
Fig. 2 is a flowchart of a method for implementing image display according to an embodiment of the present invention, as shown in fig. 2, including:
202, adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value;
the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera. Fig. 3 is a schematic diagram of a position relationship between a binocular camera and a flash lamp according to an embodiment of the present invention, as shown in fig. 3, wherein a first camera acquires a first view angle image, a second camera acquires a second view angle image, and the second camera is close to the flash lamp.
Optionally, the first perspective image is a left perspective image, the second perspective image is a right perspective image, and calculating the depth value of each pixel point in the first perspective image and the second perspective image acquired by the binocular camera includes:
and for each pixel point in the first visual angle image, searching a matching point matched with the pixel point from the second visual angle image through an image matching technology, and calculating the depth value of the pixel point according to a triangulation technology.
Fig. 4a to c are schematic diagrams of matching processing according to an embodiment of the present invention, where fig. 4a is a schematic diagram of a left perspective image according to an embodiment of the present invention, fig. 4b is a schematic diagram of a right perspective image according to an embodiment of the present invention, a pixel point 1 in fig. 4a is matched with a pixel point 2 in fig. 4b by an image matching technique, matching of the pixel points can be determined by comparison according to similarity between color and brightness of the pixels, and after a corresponding matching point is found, a depth value of the pixel point in fig. 4c can be calculated according to a triangulation technique. Fig. 5 is a schematic diagram of triangulation technology according to an embodiment of the present invention, as shown in fig. 5, cift is a lens center of a left camera, Cright is a lens center of a right camera, Oleft is a center of a left view image, Oright is a center of a right view image, P is a point in a physical space, Pleft is an imaging point of a point P in the left camera image, right is an imaging point of a point P in the right camera image, f is a focal length of a lens, Z is a distance between a point P and a camera, and T is a distance between two cameras, which can be known from a trigonometric relationship: depth is Pleft-right, Z is f T/Depth.
Optionally, in the embodiment of the present invention, the first perspective image is a left perspective image, the second perspective image is a right perspective image, the first stitched image region is a left stitched image region, and the second stitched image region is a right stitched image region; determining three splicing areas composed of the first view image and the second view image when splicing according to the calculated depth values comprises:
mapping pixels of a right area of the left view image to a left boundary of a right stitched image area; mapping pixels of a coordinate area of the right view image to the right boundary of the left spliced image area;
when the pixel of the right area of the left view image is Pl (x, y) and the depth value is Dl (x, y), the pixel coordinate x1 mapped to the left boundary of the right stitched image area is x-Dl (x, y), and y1 is y; when the pixel in the left region of the right view image is Pr (x, y) and the depth value is Dr (x, y), the pixel coordinate x2 mapped to the right boundary of the left stitched image region is x + Dr (x, y), and y2 is y. FIG. 6 is a schematic diagram illustrating the composition of a stitching region according to an embodiment of the present invention, as shown in FIG. 6, wherein the pixels in the right region of the left-view image are mapped to the left boundary of the right-side stitching image region; pixels of the coordinate region of the right view image are mapped to the right border of the left stitched image region.
Optionally, the luminance information in the embodiment of the present invention includes a pixel luminance mean value M1 of the first stitched image region, a pixel luminance mean value M2 of the middle stitched image region, and a pixel luminance mean value M3 of the second stitched image region, and the distance parameters include a center point P1 of the first stitched image region, a center point P2 of the middle stitched image region, a center point P3 of the second stitched image region, a spatial distance D12 of the center points P1 and P2, and a spatial distance D23 of the center points P2 and P3 of the three stitched regions.
Optionally, the adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area in the embodiment of the present invention includes:
for each pixel point P of the first splicing image areaP1(x, y), pixel PP1(x, y) is a distance D from the center point P2 of the Merge image region1(x, y), the brightness of which is adjusted to:
for each pixel point P of the second splicing image areaP2(x, y), pixel PP2(x, y) is a distance D from the center point P2 of the Merge image region2(x, y), the brightness of which is adjusted to:
compared with the related art, the technical scheme of the embodiment of the invention comprises the following steps: calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera; determining three splicing areas formed by the first visual angle image and the second visual angle image when splicing according to the depth value obtained by calculation; adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value; the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera. The embodiment of the invention avoids the light and shade change during image synthesis, improves the display quality of the spliced image and improves the use experience of users.
Fig. 7 is a flowchart of a method for implementing image display according to another embodiment of the present invention, as shown in fig. 7, including:
703, adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value;
the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera.
Optionally, the first perspective image is a left perspective image, the second perspective image is a right perspective image, and calculating the depth value of each pixel point in the first perspective image and the second perspective image acquired by the binocular camera includes:
and for each pixel point in the first visual angle image, searching a matching point matched with the pixel point from the second visual angle image through an image matching technology, and calculating the depth value of the pixel point according to a triangulation technology.
Optionally, in the embodiment of the present invention, the first perspective image is a left perspective image, the second perspective image is a right perspective image, the first stitched image region is a left stitched image region, and the second stitched image region is a right stitched image region; determining three splicing areas composed of the first view image and the second view image when splicing according to the calculated depth values comprises:
mapping pixels of a right area of the left view image to a left boundary of a right stitched image area; mapping pixels of a coordinate area of the right view image to the right boundary of the left spliced image area;
when the pixel of the right area of the left view image is Pl (x, y) and the depth value is Dl (x, y), the pixel coordinate x1 mapped to the left boundary of the right stitched image area is x-Dl (x, y), and y1 is y; when the pixel in the left region of the right view image is Pr (x, y) and the depth value is Dr (x, y), the pixel coordinate x2 mapped to the right boundary of the left stitched image region is x + Dr (x, y), and y2 is y.
Optionally, the luminance information in the embodiment of the present invention includes a pixel luminance mean value M1 of the first stitched image region, a pixel luminance mean value M2 of the middle stitched image region, and a pixel luminance mean value M3 of the second stitched image region, and the distance parameters include a center point P1 of the first stitched image region, a center point P2 of the middle stitched image region, a center point P3 of the second stitched image region, a spatial distance D12 of the center points P1 and P2, and a spatial distance D23 of the center points P2 and P3 of the three stitched regions.
Optionally, the adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area in the embodiment of the present invention includes:
for the first mosaicEach pixel point P of the image areaP1(x, y), pixel PP1(x, y) is a distance D from the center point P2 of the Merge image region1(x, y), the brightness of which is adjusted to:
for each pixel point P of the second splicing image areaP2(x, y), pixel PP2(x, y) is a distance D from the center point P2 of the Merge image region2(x, y), the brightness of which is adjusted to:
compared with the related art, the technical scheme of the embodiment of the invention comprises the following steps: calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera; determining three splicing areas formed by the first visual angle image and the second visual angle image when splicing according to the depth value obtained by calculation; adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value; the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera. The embodiment of the invention avoids the light and shade change during image synthesis, improves the display quality of the spliced image and improves the use experience of users.
Fig. 8 is a block diagram of a mobile terminal according to an embodiment of the present invention, as shown in fig. 8, including:
a first camera configured to capture a first perspective image;
a second camera configured to capture a second perspective image;
a memory storing a picture processing program;
a processor configured to execute an image processing program to perform the following operations:
calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera;
determining three splicing areas formed by the first visual angle image and the second visual angle image when splicing according to the depth value obtained by calculation;
adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value;
the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera.
The three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera.
Optionally, in the embodiment of the present invention, the calculating the depth value of each pixel point in the first perspective image and the second perspective image acquired by the binocular camera by using the processor configured to execute the image processing program includes:
and for each pixel point in the first visual angle image, searching a matching point matched with the pixel point from the second visual angle image through an image matching technology, and calculating the depth value of the pixel point according to a triangulation technology.
Optionally, in the embodiment of the present invention, the first perspective image is a left perspective image, the second perspective image is a right perspective image, the first stitched image region is a left stitched image region, and the second stitched image region is a right stitched image region; a processor configured to execute an image processing program to determine, from the calculated depth values, three stitched regions composed of the first view image and the second view image when stitched, including:
mapping pixels of a right area of the left view image to a left boundary of a right stitched image area; mapping pixels of a coordinate area of the right view image to the right boundary of the left spliced image area;
when the pixel of the right area of the left view image is Pl (x, y) and the depth value is Dl (x, y), the pixel coordinate x1 mapped to the left boundary of the right stitched image area is x-Dl (x, y), and y1 is y; when the pixel in the left region of the right view image is Pr (x, y) and the depth value is Dr (x, y), the pixel coordinate x2 mapped to the right boundary of the left stitched image region is x + Dr (x, y), and y2 is y.
Optionally, the luminance information in the embodiment of the present invention includes a pixel luminance mean value M1 of the first stitched image region, a pixel luminance mean value M2 of the middle stitched image region, and a pixel luminance mean value M3 of the second stitched image region, and the distance parameters include a center point P1 of the first stitched image region, a center point P2 of the middle stitched image region, a center point P3 of the second stitched image region, a spatial distance D12 of the center points P1 and P2, and a spatial distance D23 of the center points P2 and P3; a processor configured to execute an image processing program to perform brightness adjustment on the stitched area according to the brightness information and the distance parameter of the stitched area comprises:
for each pixel point P of the first splicing image areaP1(x, y), pixel PP1(x, y) is a distance D from the center point P2 of the Merge image region1(x, y), the brightness of which is adjusted to:
for each pixel point P of the second splicing image areaP2(x, y), pixel PP2(x, y) is a distance D from the center point P2 of the Merge image region2(x, y), the brightness of which is adjusted to:
compared with the related art, the technical scheme of the embodiment of the invention comprises the following steps: calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera; determining three splicing areas formed by the first visual angle image and the second visual angle image when splicing according to the depth value obtained by calculation; adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value; the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera. The embodiment of the invention avoids the light and shade change during image synthesis, improves the display quality of the spliced image and improves the use experience of users.
Embodiments of the present invention also provide a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of:
calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera;
determining three splicing areas formed by the first visual angle image and the second visual angle image when splicing according to the depth value obtained by calculation;
adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value;
the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera.
The three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera.
Optionally, in the embodiment of the present invention, the first perspective image is a left perspective image, the second perspective image is a right perspective image, and the one or more programs may be executed by the one or more processors to implement the calculating of the depth value of each pixel point in the first perspective image and the second perspective image acquired by the binocular camera, including:
and for each pixel point in the first visual angle image, searching a matching point matched with the pixel point from the second visual angle image through an image matching technology, and calculating the depth value of the pixel point according to a triangulation technology.
Optionally, in the embodiment of the present invention, the first perspective image is a left perspective image, the second perspective image is a right perspective image, the first stitched image region is a left stitched image region, and the second stitched image region is a right stitched image region; the one or more programs are executable by the one or more processors to perform determining three stitching regions composed of the first view image and the second view image when stitching according to the calculated depth values includes:
mapping pixels of a right area of the left view image to a left boundary of a right stitched image area; mapping pixels of a coordinate area of the right view image to the right boundary of the left spliced image area;
when the pixel of the right area of the left view image is Pl (x, y) and the depth value is Dl (x, y), the pixel coordinate x1 mapped to the left boundary of the right stitched image area is x-Dl (x, y), and y1 is y; when the pixel in the left region of the right view image is Pr (x, y) and the depth value is Dr (x, y), the pixel coordinate x2 mapped to the right boundary of the left stitched image region is x + Dr (x, y), and y2 is y.
Optionally, the luminance information in the embodiment of the present invention includes a pixel luminance mean value M1 of the first stitched image region, a pixel luminance mean value M2 of the middle stitched image region, and a pixel luminance mean value M3 of the second stitched image region, and the distance parameters include a center point P1 of the first stitched image region, a center point P2 of the middle stitched image region, a center point P3 of the second stitched image region, a spatial distance D12 of the center points P1 and P2, and a spatial distance D23 of the center points P2 and P3; the one or more programs are executable by the one or more processors to perform brightness adjustment of a splice region based on brightness information and a distance parameter of the splice region include:
for each pixel point P of the first splicing image areaP1(x, y), pixel PP1(x, y) is a distance D from the center point P2 of the Merge image region1(x, y), the brightness of which is adjusted to:
for each pixel point P of the second splicing image areaP2(x, y), pixel PP2(x, y) is a distance D from the center point P2 of the Merge image region2(x, y), the brightness of which is adjusted to:
compared with the related art, the technical scheme of the embodiment of the invention comprises the following steps: calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera; determining three splicing areas formed by the first visual angle image and the second visual angle image when splicing according to the depth value obtained by calculation; adjusting the brightness of the splicing area according to the brightness information and the distance parameter of the splicing area, generating a shot image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value; the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera. The embodiment of the invention avoids the light and shade change during image synthesis, improves the display quality of the spliced image and improves the use experience of users.
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.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A method of implementing image processing, comprising:
calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera; the first perspective image is a left perspective image, and the second perspective image is a right perspective image;
determining three splicing areas composed of the first view image and the second view image when splicing according to the depth values obtained by calculation, wherein the three splicing areas comprise: mapping pixels of a right region of the left perspective image to a left boundary of a right stitched image region; mapping pixels of a left region of the right perspective image to a right boundary of a left stitched image region;
carry out luminance adjustment to the concatenation area according to the luminance information and the distance parameter of concatenation area, include:
the luminance information comprises a pixel luminance mean value M1 of a first spliced image region, a pixel luminance mean value M2 of an intermediate spliced image region, and a pixel luminance mean value M3 of a second spliced image region, and the distance parameters comprise a central point P1 of the first spliced image region, a central point P2 of the intermediate spliced image region, a central point P3 of the second spliced image region, a spatial distance D12 of the central points P1 and P2, and a spatial distance D23 of the central points P2 and P3 of the three spliced regions;
for each pixel point P of the first splicing image areaP1(x, y), pixel PP1(x, y) is a distance D from the center point P2 of the Merge image region1(x, y), the brightness of which is adjusted to:
for each pixel point P of the second splicing image areaP2(x, y), pixel PP2(x, y) is a distance D from the center point P2 of the Merge image region2(x, y), the brightness of which is adjusted to:
generating a shooting image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value;
the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera; the first spliced image area is a left spliced image area, and the second spliced image area is a right spliced image area.
2. The method of claim 1, wherein the calculating the depth value of each pixel point in the first perspective image and the second perspective image obtained by the binocular camera comprises:
and for each pixel point in the first visual angle image, searching a matching point matched with the pixel point from the second visual angle image through an image matching technology, and calculating the depth value of the pixel point according to a triangulation technology.
3. The method of claim 1,
when the pixel of the right region of the left view image is Pl (x, y) and the depth value is Dl (x, y), the pixel coordinate x1 mapped to the left boundary of the right stitched image region is x-Dl (x, y), and y1 is y; when the pixel of the left region of the right view image is Pr (x, y) and the depth value is Dr (x, y), the pixel coordinate x2 mapped to the right boundary of the left stitched image region is x + Dr (x, y), and y2 is y.
4. A mobile terminal, comprising:
a first camera configured to capture a first perspective image;
a second camera configured to capture a second perspective image;
a memory storing a picture processing program;
a processor configured to execute the image processing program to perform operations of:
calculating the depth value of each pixel point in the first visual angle image and the second visual angle image acquired by the binocular camera; the first perspective image is a left perspective image, and the second perspective image is a right perspective image;
determining three splicing areas composed of the first view image and the second view image when splicing according to the depth values obtained by calculation, wherein the three splicing areas comprise: mapping pixels of a right region of the left perspective image to a left boundary of a right stitched image region; mapping pixels of a left region of the right perspective image to a right boundary of a left stitched image region;
the processor, configured to execute the image processing program to perform brightness adjustment on the splicing area according to the brightness information and the distance parameter of the splicing area, includes:
the luminance information comprises a pixel luminance mean value M1 of a first spliced image region, a pixel luminance mean value M2 of an intermediate spliced image region, and a pixel luminance mean value M3 of a second spliced image region, and the distance parameters comprise a central point P1 of the first spliced image region, a central point P2 of the intermediate spliced image region, a central point P3 of the second spliced image region, a spatial distance D12 of the central points P1 and P2, and a spatial distance D23 of the central points P2 and P3 of the three spliced regions;
for each pixel point P of the first splicing image areaP1(x, y), pixel PP1(x, y) is a distance D from the center point P2 of the Merge image region1(x, y), the brightness of which is adjusted to:
for each pixel point PP2(x, y) in the second stitched image region, the distance from the pixel point PP2(x, y) to the center point P2 in the middle stitched image region is D2(x, y), and the brightness is adjusted as follows:
generating a shooting image according to the adjusted brightness value and generating a spliced image according to the adjusted brightness value;
the three splicing areas comprise a first splicing image area, a middle splicing image area and a second splicing image area of the spliced images; the second visual image is an image obtained by a camera close to the flash lamp in the binocular camera; the first spliced image area is a left spliced image area, and the second spliced image area is a right spliced image area.
5. The mobile terminal of claim 4, wherein the processor configured to execute the image processing program to calculate the depth value of each pixel point in the first perspective image and the second perspective image obtained by the binocular camera comprises:
and for each pixel point in the first visual angle image, searching a matching point matched with the pixel point from the second visual angle image through an image matching technology, and calculating the depth value of the pixel point according to a triangulation technology.
6. The mobile terminal of claim 4,
when the pixel of the right region of the left view image is Pl (x, y) and the depth value is Dl (x, y), the pixel coordinate x1 mapped to the left boundary of the right stitched image region is x-Dl (x, y), and y1 is y; when the pixel of the left region of the right view image is Pr (x, y) and the depth value is Dr (x, y), the pixel coordinate x2 mapped to the right boundary of the left stitched image region is x + Dr (x, y), and y2 is y.
7. A computer readable storage medium, characterized in that the computer readable storage medium stores one or more programs executable by one or more processors to implement the steps of the method of image processing as claimed in claims 1-3.
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