CN104394392B - A kind of white balance adjusting method, device and terminal - Google Patents

Abstract

The embodiment of the present invention discloses a white balance adjustment method, device and terminal, wherein the white balance adjustment method includes: obtaining the frame rate of the first camera; judging whether the frame rate is the maximum Acquire the first image; analyze the first image to obtain the white balance gain of the first image; adjust the white balance of the second image obtained through the second camera according to the white balance gain; display the second image after the white balance adjustment . By adopting the embodiments of the present invention, the white balance adjustment speed can be increased without affecting the image quality, and the display delay of the image after the white balance adjustment can be reduced.

Description

A white balance adjustment method, device and terminal

technical field

The present invention relates to the field of electronic technology, in particular to a white balance adjustment method, device and terminal.

Background technique

In camera technology, when the camera is started or the light environment changes, it is usually accompanied by a white balance adjustment process. Among them, white balance is used to describe the accuracy with which the red, green and blue primary colors in the display are mixed to generate white. The white balance adjustment speed is usually related to the frame rate. If the frame rate is higher, the white balance adjustment speed is faster, and the time for the terminal to display the white balance adjusted image on the display is shorter. The frame rate is used to measure the transmission rate per unit time. The number of frames of the image. In the existing camera technology, the higher the frame rate, the higher the processing capability requirements of the graphics card. If the frame rate is increased, the image brightness will be lower or the noise will be larger, which will affect the image quality; if the frame rate is lower, Then the white balance adjustment speed is slow, and the time delay for the terminal to display the white balance adjusted image through the display is relatively long.

Contents of the invention

Embodiments of the present invention provide a white balance adjustment method, device and terminal, which can improve the white balance adjustment speed and reduce the display delay of the white balance adjusted image without affecting the image quality.

An embodiment of the present invention provides a white balance adjustment method, including:

Get the frame rate of the first camera;

Judging whether the frame rate is the maximum frame rate, if so, acquiring the first image through the first camera;

analyzing the first image to obtain a white balance gain of the first image;

adjusting the white balance of the second image acquired by the second camera according to the white balance gain;

and displaying the second image after the white balance has been adjusted.

Correspondingly, an embodiment of the present invention also provides a white balance adjustment device, including:

A frame rate acquisition module, configured to obtain the frame rate of the first camera;

A judging module, configured to judge whether the frame rate is the maximum frame rate;

An image acquisition module, configured to acquire a first image through the first camera if the judging module judges that the frame rate is the maximum frame rate;

a gain obtaining module, configured to analyze the first image to obtain the white balance gain of the first image;

An adjustment module, configured to adjust the white balance of the second image acquired through the second camera according to the white balance gain;

A display module, configured to display the second image after the white balance has been adjusted.

Correspondingly, an embodiment of the present invention also provides a terminal, including the above-mentioned white balance adjustment device.

Implementing the embodiment of the present invention, when the terminal judges that the frame rate of the first camera is the maximum frame rate, the terminal obtains the first image through the first camera, analyzes the first image to obtain the white balance gain of the first image, and adjusts the The second image obtained by the second camera is used for white balance adjustment, and the second image after white balance adjustment is displayed. Compared with the prior art, a higher frame rate will result in poorer image quality, and a lower frame rate will result in The white balance adjustment speed is relatively slow, and the embodiment of the present invention can increase the white balance adjustment speed and reduce the display delay of the white balance adjusted image without affecting the image quality.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic flowchart of a white balance adjustment method provided in the first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a white balance adjustment device provided in an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of the gain acquisition module of Fig. 2 in an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of the regulating module of Fig. 2 in an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a terminal provided in an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The embodiment of the present invention discloses a white balance adjustment method. When the terminal judges that the frame rate of the first camera is the maximum frame rate, the terminal obtains the first image through the first camera, and analyzes the first image to obtain the white balance of the first image. Gain, adjust the white balance of the second image obtained through the second camera according to the white balance gain, and display the second image after white balance adjustment, which can improve the speed of white balance adjustment without affecting the image quality. Reduce the display delay of the image after white balance adjustment.

The shooting directions of the first camera and the second camera mentioned in the embodiment of the present invention may be the same or different. For example, the first camera may be a front camera, and the second camera may be a rear camera, where the shooting directions of the first camera and the second camera are opposite. For another example, the first camera and the second camera may be rear cameras, where the shooting directions of the first camera and the second camera are the same, etc., which are not limited in this embodiment of the present invention.

The white balance adjusting device mentioned in the embodiment of the present invention may be set in a terminal such as a mobile phone, a camera, a tablet computer, a PC (personal computer, personal computer) or a wearable smart device.

Please refer to FIG. 1. FIG. 1 is a schematic flowchart of a white balance adjustment method provided in the first embodiment of the present invention. As shown in the figure, the white balance adjustment method in the embodiment of the present invention may include:

S101. Acquire the frame rate of the first camera.

The terminal can acquire the frame rate of the first camera. For example, after starting the first camera through the camera module, the terminal may acquire configuration information of the first camera, and acquire a frame rate of the first camera according to the configuration information of the first camera. Among them, the frame rate is used to measure the number of frames of images transmitted per unit time. The higher the frame rate, the more frames of images transmitted per unit time, and the faster the terminal acquires images through the camera. The terminal analyzes the images The faster the speed of obtaining the white balance gain of the image is, the faster the terminal can adjust the white balance of the image through the white balance gain, and the shorter the time delay for the terminal to display the white balance adjusted image on the display.

S102. Determine whether the frame rate is the maximum frame rate.

After the terminal obtains the frame rate of the first camera, it can determine whether the frame rate is the maximum frame rate, and if the frame rate is the maximum frame rate, further execute S104; if the frame rate is not the maximum frame rate, further execute S103. For example, the terminal can obtain the configuration information of the first camera, and obtain the maximum frame rate of the first camera according to the configuration information of the first camera, then after obtaining the frame rate of the first camera, the terminal can determine whether the frame rate is the maximum frame rate Rate.

S103. Adjust the frame rate to the maximum frame rate.

When the terminal determines that the frame rate of the first camera is not the maximum frame rate, it may adjust the frame rate to the maximum frame rate. For example, the terminal may obtain the configuration information of the first camera, and obtain the maximum frame rate of the first camera according to the configuration information of the first camera, and then the terminal may adjust the frame rate to the maximum frame rate.

S104. Acquire a first image through a first camera.

When the terminal determines that the frame rate of the first camera is the maximum frame rate, the terminal may acquire the first image through the first camera. Specifically, the terminal may control the first camera to acquire the first image with a maximum frame rate parameter, and the terminal acquires the first image at the fastest speed.

In an optional embodiment, after determining that the frame rate of the first camera is not the maximum frame rate, and adjusting the frame rate to the maximum frame rate, the terminal may obtain the first image through the first camera.

S105. Analyze the first image to obtain a white balance gain of the first image.

The terminal may analyze the first image to obtain the white balance gain of the first image. The terminal may analyze the first image by using an automatic white balance algorithm based on a dynamic threshold or a grayscale world, to obtain a white balance gain of the first image.

Taking the automatic white balance algorithm based on dynamic threshold as an example, the terminal can divide the first image into at least one sub-image, calculate the average brightness of each sub-image, and obtain the R, G, and B three colors in the sub-image corresponding to the maximum average brightness. The average value of the primary colors, the white balance gain is obtained according to the average value of the three primary colors R, G, and B, where the R primary color is red, the G primary color is green, and the B primary color is blue.

It should be noted that this embodiment of the present invention includes but is not limited to analyzing the first image through an automatic white balance algorithm based on a dynamic threshold to obtain the white balance gain of the first image. The automatic white balance algorithm analyzes the first image to obtain the white balance gain of the first image, etc., which are not limited in this embodiment of the present invention.

Optionally, the terminal may calculate the product of the maximum average brightness value and the average value of the R primary color as the red gain in the white balance gain, or calculate the product of the maximum brightness average value and the average value of the G primary color as the white balance gain Green gain, or calculate the product of the maximum luminance average value and the average value of the B primary color as the blue gain in the white balance gain.

Further optionally, the terminal may calculate the product of the maximum average brightness value and the average value of the R primary color as the red gain in the white balance gain, and calculate the product of the maximum brightness average value and the average value of the G primary color as the red gain in the white balance gain. green gain. The terminal can also calculate the product of the maximum brightness average value and the average value of the R primary color as the red gain in the white balance gain, and calculate the product of the maximum brightness average value and the average value of the B primary color as the blue gain in the white balance gain . The terminal can also calculate the product of the maximum brightness average value and the G primary color average value as the green gain in the white balance gain, and calculate the product of the maximum brightness average value and the B primary color average value as the blue gain in the white balance gain .

Further optionally, the terminal may calculate the product of the average value of the maximum brightness and the average value of the primary color R as the red gain in the white balance gain, and calculate the product of the average value of the maximum brightness and the average value of the primary color G as the red gain in the white balance gain. Green gain, and calculate the product of the maximum luminance average value and the average value of the B primary color as the blue gain in the white balance gain.

S106. Perform white balance adjustment on the second image acquired through the second camera according to the white balance gain.

The terminal may adjust the white balance of the second image acquired through the second camera according to the white balance gain.

Specifically, the white balance gain may include red gain, green gain or blue gain, and the terminal may acquire the second image through the second camera, render the red gain on the red channel of the second image, or render the green gain on the second on the green channel of the image, or render the blue gain on the blue channel of the second image information, so as to realize the white balance adjustment of the second image.

Optionally, when the white balance gain includes red gain and green gain, the terminal may acquire the second image through the second camera, render the red gain on the red channel of the second image, and render the green gain on the green gain of the second image channel to adjust the white balance of the second image. When the white balance gain includes red gain and blue gain, the terminal can capture the second image through the second camera, render the red gain on the red channel of the second image, and render the blue gain on the blue channel of the second image to adjust the white balance of the second image. When the white balance gain includes green gain and blue gain, the terminal can capture the second image through the second camera, render the green gain on the green channel of the second image, and render the blue gain on the blue channel of the second image to adjust the white balance of the second image.

Further optionally, when the white balance gain includes red gain, green gain, and blue gain, the terminal may acquire the second image through the second camera, render the red gain on the red channel of the second image, and render the green gain on the second image. on the green channel of the second image, and render the blue gain on the blue channel of the second image information, so as to realize the white balance adjustment of the second image.

S107, displaying the second image after white balance adjustment.

After adjusting the white balance of the second image, the terminal may display the second image after white balance adjustment, for example, the terminal may display the second image after white balance adjustment through a display.

In the embodiment of the present invention, the first image obtained by the terminal through the first camera is used to obtain the white balance gain, and the second image obtained through the second camera is used for preview and display, and the frame rate of the first camera is adjusted to the maximum frame rate , the acquisition speed of the white balance gain of the first image can be increased, and the frame rate of the second camera remains unchanged, which will not affect the quality of the second image. White balance the second image through the white balance gain of the first image Adjustment, the speed of white balance adjustment is improved, and the display delay of the image after white balance adjustment is reduced.

In the white balance adjustment method shown in Figure 1, when the terminal judges that the frame rate of the first camera is the maximum frame rate, the terminal obtains the first image through the first camera, and analyzes the first image to obtain the white balance gain of the first image , adjust the white balance of the second image acquired by the second camera according to the white balance gain, and display the second image after white balance adjustment, which can improve the white balance adjustment speed and reduce the The display delay of the image after white balance adjustment.

Please refer to Figure 2, Figure 2 is a schematic structural diagram of a white balance adjustment device provided in an embodiment of the present invention, wherein the white balance adjustment device provided in an embodiment of the present invention corresponds to the method shown in Figure 1, and is based on Figure 1 The executive body of the white balance adjustment method shown in the figure, as shown in the figure, the white balance adjustment device 200 in the embodiment of the present invention may at least include a frame rate acquisition module 210, a judgment module 220, an image acquisition module 230, a gain acquisition module 240, an adjustment Module 250 and display module 260, wherein:

The frame rate acquiring module 210 is configured to acquire the frame rate of the first camera.

For example, the frame rate obtaining module 210 may obtain configuration information of the first camera, and obtain the frame rate of the first camera according to the configuration information of the first camera. Wherein, the frame rate is used to measure the number of frames of images transmitted per unit time, the higher the frame rate, the more frames of images transmitted per unit time, the faster the image acquisition module 230 acquires images through the camera, and the gain is obtained The faster the module 240 analyzes the image to obtain the white balance gain of the image, the faster the adjustment module 250 adjusts the white balance of the image through the white balance gain, and the display module 260 displays the adjusted white balance through the display. The shorter the image delay.

A judging module 220, configured to judge whether the frame rate is the maximum frame rate.

For example, the judgment module 220 can obtain the configuration information of the first camera, and obtain the maximum frame rate of the first camera according to the configuration information of the first camera, then after the judgment module 220 obtains the frame rate of the first camera, it can judge the frame rate Whether it is the maximum frame rate.

The image acquiring module 230 is configured to acquire the first image through the first camera if the judging module 220 judges that the frame rate is the maximum frame rate.

The gain obtaining module 240 is configured to analyze the first image to obtain the white balance gain of the first image.

For example, the gain obtaining module 240 may analyze the first image to obtain the white balance gain of the first image through an automatic white balance algorithm based on a dynamic threshold or a grayscale world. It should be pointed out that the embodiment of the present invention includes but is not limited to analyzing the first image through an automatic white balance algorithm based on a dynamic threshold to obtain the white balance gain of the first image. The automatic white balance algorithm of the correlation method analyzes the first image to obtain the white balance gain of the first image, etc., which are not limited in this embodiment of the present invention.

The adjusting module 250 is configured to adjust the white balance of the second image acquired through the second camera according to the white balance gain.

The display module 260 is configured to display the second image after white balance adjustment. For example, the display module 260 may display the second image after white balance adjustment through a display.

As an optional implementation manner, the adjustment module 250 is also used to adjust the frame rate to the maximum frame rate when the judging module 220 judges that the frame rate is not the maximum frame rate, and trigger the image acquisition module 230 to acquire the first image through the first camera .

As an optional implementation manner, the image acquisition module 230 is configured to control the first camera to acquire the first image with a maximum frame rate parameter, wherein the image acquisition module 230 acquires the first image at the fastest speed.

As an optional implementation manner, the gain acquisition module 240 may be shown in FIG. 3, further comprising:

The segmentation unit 310 is configured to segment the first image into at least one sub-image.

A calculation unit 320, configured to calculate the average brightness of each sub-image.

The mean value obtaining unit 330 is configured to obtain the mean value of the three primary colors R, G and B in the sub-image corresponding to the maximum brightness mean value. The R base color is red, the G base color is green, and the B base color is blue.

The gain acquiring unit 340 is configured to acquire the white balance gain according to the average value of the three primary colors R, G, and B.

As an optional implementation manner, the gain acquisition unit 340 is configured to calculate a product of a maximum brightness average value and an R primary color average value as a red gain in the white balance gain. or

The gain obtaining unit 340 is configured to calculate the product of the maximum brightness average value and the G primary color average value as the green gain in the white balance gain. or

The gain acquisition unit 340 is configured to calculate the product of the maximum brightness average value and the B primary color average value as the blue gain in the white balance gain.

Further optionally, the gain acquisition unit 340 may calculate the product of the maximum average brightness value and the average value of the R primary color as the red gain in the white balance gain, and calculate the product of the maximum brightness average value and the average value of the G primary color as the white gain Green gain in balance gain. The gain obtaining unit 340 may also calculate the product of the maximum brightness average value and the R primary color average value as the red gain in the white balance gain, and calculate the product of the maximum brightness average value and the B primary color average value as the white balance gain Blue gain. The gain obtaining unit 340 may also calculate the product of the maximum brightness average value and the G primary color average value as the green gain in the white balance gain, and calculate the product of the maximum brightness average value and the B primary color average value as the white balance gain. Blue gain.

Further optionally, the gain acquisition unit 340 may calculate the product of the maximum brightness average value and the R primary color average value as the red gain in the white balance gain, and calculate the product of the maximum brightness average value and the G primary color average value as the white balance gain. The green gain in the gain, and the product of the maximum luminance average value and the average value of the B primary color is calculated as the blue gain in the white balance gain.

As an optional implementation manner, the white balance gain may include red gain, green gain or blue gain, and then the adjustment module 250 may be as shown in FIG. 4 , further comprising:

An image acquiring unit 410, configured to acquire a second image through a second camera.

a rendering unit 420, configured to render the red gain on the red channel of the second image, the green gain on the green channel of the second image, or the blue gain on the blue channel of the second image information, to The white balance adjustment of the second image is realized.

Further optionally, when the white balance gain includes a red gain and a green gain, the rendering unit 420 may render the red gain on the red channel of the second image, and render the green gain on the green channel of the second image, so as to realize White balance adjustment for the second image. When the white balance gain includes red gain and blue gain, the rendering unit 420 may render the red gain on the red channel of the second image, and render the blue gain on the blue channel of the second image, so as to realize the Image white balance adjustment. When the white balance gain includes a green gain and a blue gain, the rendering unit 420 may render the green gain on the green channel of the second image, and render the blue gain on the blue channel of the second image, so as to achieve the second Image white balance adjustment.

Further optionally, when the white balance gain includes a red gain, a green gain, and a blue gain, the rendering unit 420 may render the red gain on the red channel of the second image, and render the green gain on the green channel of the second image, And render the blue gain on the blue channel of the second image information, so as to realize the white balance adjustment of the second image.

In the white balance adjustment device shown in FIG. 2 , when the judgment module 220 judges that the frame rate acquired by the frame rate acquisition module 210 is the maximum frame rate, the image acquisition unit 230 acquires the first image through the first camera, and the gain acquisition module 240 The first image is analyzed to obtain the white balance gain of the first image, the adjustment module 250 adjusts the white balance of the second image acquired through the second camera according to the white balance gain, and the display module 260 displays the second image after white balance adjustment , without affecting the image quality, the speed of white balance adjustment can be increased, and the display delay of the image after white balance adjustment can be reduced.

Please refer to Figure 5. Figure 5 is a schematic structural diagram of a terminal provided in an embodiment of the present invention, which may include the white balance adjustment device shown in Figures 2 to 4, wherein the terminal may be a mobile phone, a camera, a tablet computer, For a terminal such as a PC or a wearable smart device, the white balance adjustment device is disposed in the terminal. As shown in FIG. 5 , the terminal 500 includes: at least one processor 510, such as a CPU, at least one first input device 530, at least one second input device 540, at least one output device 550, memory 560, and at least one bus 520. Wherein, the communication bus 520 is used to realize connection and communication between these components. For example, the first input device 530 may include a first camera, the second input device 540 may include a second camera, and the output device 550 may include a display screen. The memory 560 may be a high-speed RAM memory, or a non-volatile memory, such as at least one disk memory. Optionally, the memory 560 may also be at least one storage terminal located away from the aforementioned processor 510 . The processor 510 can be combined with the white balance adjustment device shown in FIGS. 2 to 4 , wherein a set of program codes are stored in the memory 560, and the processor 510 calls the program codes stored in the memory 560 to perform the following operations:

The frame rate of the first input device 530 is acquired.

For example, the processor 510 may obtain configuration information of the first input device 530 , and obtain the frame rate of the first input device 530 according to the configuration information of the first input device 530 . Wherein, the frame rate is used to measure the number of frames of images transmitted per unit time, the higher the frame rate, the more frames of images transmitted per unit time, the faster the speed of acquiring images through the first input device 530, the processor The faster the 510 analyzes the image to obtain the white balance gain of the image, the faster the white balance adjustment of the image is performed through the white balance gain, and the longer the time delay for displaying the white balance adjusted image through the output device 550 is. short.

Determine whether the frame rate is the maximum frame rate.

For example, the processor 510 may obtain the configuration information of the first input device 530, and obtain the maximum frame rate of the first input device 530 according to the configuration information of the first input device 530, then after obtaining the frame rate of the first input device 530, It can be judged whether the frame rate is the maximum frame rate.

If it is determined that the frame rate is the maximum frame rate, the first image is acquired through the first input device 530 .

The first image is analyzed to obtain a white balance gain for the first image.

For example, the processor 510 may analyze the first image to obtain the white balance gain of the first image by using an automatic white balance algorithm based on a dynamic threshold or a gray scale world. It should be noted that this embodiment of the present invention includes but is not limited to analyzing the first image through an automatic white balance algorithm based on a dynamic threshold to obtain the white balance gain of the first image. The automatic white balance algorithm of the method analyzes the first image to obtain the white balance gain of the first image, etc., which are not limited in this embodiment of the present invention.

The white balance of the second image obtained through the second input device 540 is adjusted according to the white balance gain.

The second image after white balance adjustment is displayed through the output device 550 .

As an optional implementation manner, when the processor 510 determines that the frame rate is not the maximum frame rate, it may adjust the frame rate to the maximum frame rate, and acquire the first image through the first input device 530 .

As an optional implementation manner, the acquiring the first image by the processor 510 through the first input device 530 may specifically include:

The first input device 530 is controlled to acquire the first image with the maximum frame rate as a parameter, wherein the processor 510 acquires the first image at the fastest speed.

As an optional implementation manner, the processor 510 analyzing the first image to obtain the white balance gain of the first image may specifically include:

Slicing the first image into at least one sub-image.

Computes the brightness average of each subimage.

Obtain the average value of the three primary colors R, G, and B in the sub-image corresponding to the average value of the maximum brightness. The R base color is red, the G base color is green, and the B base color is blue.

The white balance gain is obtained according to the average value of the three primary colors R, G, and B.

As an optional implementation manner, the processor 510 obtaining the white balance gain according to the average value of the three primary colors R, G, and B may specifically include:

The product of the maximum luminance average value and the average value of the R primary color is calculated as the red gain in the white balance gain. or

The product of the maximum luminance average value and the average value of the G primary color is calculated as the green gain in the white balance gain. or

The product of the maximum luminance average value and the average value of the B primary color is calculated as the blue gain in the white balance gain.

Further optionally, the processor 510 may calculate the product of the maximum average brightness value and the average value of the R primary color as the red gain in the white balance gain, and calculate the product of the maximum brightness average value and the average value of the G primary color as the white balance gain. Green buffs in buffs. The processor 510 may also calculate the product of the maximum brightness average value and the average value of the R primary color as the red gain in the white balance gain, and calculate the product of the maximum brightness average value and the average value of the B primary color as the blue gain in the white balance gain. color gain. The processor 510 may also calculate the product of the maximum brightness average value and the average value of the G primary color as the green gain in the white balance gain, and calculate the product of the maximum brightness average value and the average value of the B primary color as the blue gain in the white balance gain. color gain.

Further optionally, the processor 510 may calculate the product of the average value of the maximum brightness and the average value of the primary color R as the red gain in the white balance gain, and calculate the product of the average value of the maximum brightness and the average value of the primary color G as the white balance gain The green gain in , and calculate the product of the maximum luminance average value and the average value of the B primary color as the blue gain in the white balance gain.

As an optional implementation manner, the white balance gain may include red gain, green gain or blue gain, and the processor 510 performs white balance adjustment on the second image acquired through the second input device 540 according to the white balance gain. Can include:

The second image is acquired through the second input device 540 .

Render the red gain on the red channel of the second image, render the green gain on the green channel of the second image, or render the blue gain on the blue channel of the second image information to achieve the White balance adjustment.

Further optionally, when the white balance gain includes a red gain and a green gain, the processor 510 may render the red gain on the red channel of the second image, and render the green gain on the green channel of the second image, so as to implement White balance adjustment for the second image. When the white balance gain includes a red gain and a blue gain, the processor 510 may render the red gain on the red channel of the second image, and render the blue gain on the blue channel of the second image, so as to implement the second Image white balance adjustment. When the white balance gain includes a green gain and a blue gain, the processor 510 may render the green gain on the green channel of the second image, and render the blue gain on the blue channel of the second image, so as to implement the second Image white balance adjustment.

Further optionally, when the white balance gain includes a red gain, a green gain, and a blue gain, the processor 510 may render the red gain on the red channel of the second image, and render the green gain on the green channel of the second image, And render the blue gain on the blue channel of the second image information, so as to realize the white balance adjustment of the second image.

Specifically, the terminal 500 described in the embodiment of the present invention may be used to implement part or all of the procedures in the embodiment of the white balance adjustment method described in conjunction with FIG. 1 in the present invention.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in computer-readable storage media. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM) and the like.

It should be noted that, in the foregoing embodiments, descriptions of each embodiment have their own emphases, and for parts that are not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by the embodiments of the present invention.

The steps in the methods of the embodiments of the present invention can be adjusted, combined and deleted according to actual needs.

The modules or units in the terminal in the embodiment of the present invention can be combined, divided and deleted according to actual needs.

The modules or units in the embodiments of the present invention may be implemented by a general integrated circuit, such as a CPU (Central Processing Unit, central processing unit), or an ASIC (Application Specific Integrated Circuit, application specific integrated circuit).

The white balance adjustment method, device and terminal provided by the embodiments of the present invention have been introduced in detail above. This article uses specific examples to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the present invention. The method of the invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be understood To limit the present invention.

Claims (11)

1. A method for adjusting white balance, comprising: Get the frame rate of the first camera; Judging whether the frame rate is the maximum frame rate, if so, obtaining the first image with the maximum frame rate parameter through the first camera; analyzing the first image to obtain a white balance gain of the first image; adjusting the white balance of the second image acquired by the second camera according to the white balance gain; and displaying the second image after the white balance has been adjusted. 2. The method according to claim 1, wherein when judging that the frame rate is not the maximum frame rate, further comprising: adjusting the frame rate to a maximum frame rate, and performing acquiring the first image through the first camera. 3. The method according to claim 1, wherein the analyzing the first image to obtain the white balance gain of the first image comprises: segmenting the first image into at least one sub-image; calculating the average brightness of each of the sub-images; Obtain the average value of the three primary colors R, G, and B in the sub-image corresponding to the maximum brightness average value; The white balance gain is obtained according to the average value of the three primary colors R, G, and B. 4. The method according to claim 3, wherein said obtaining said white balance gain according to the average value of said R, G, and B three primary colors comprises: calculating the product of the maximum brightness average value and the average value of the R primary color as the red gain in the white balance gain; or calculating the product of the maximum brightness average value and the G primary color average value as the green gain in the white balance gain; or Calculate the product of the average value of the maximum brightness and the average value of the B primary color as the blue gain in the white balance gain. 5. The method according to claim 1, wherein the white balance gain comprises a red gain, a green gain or a blue gain; The white balance adjustment of the second image acquired by the second camera according to the white balance gain includes: acquiring the second image through the second camera; rendering the red gain on the red channel of the second image, rendering the green gain on the green channel of the second image, or rendering the blue gain on the second image information on the blue channel to realize the white balance adjustment of the second image. 6. A white balance adjustment device, comprising: A frame rate acquisition module, configured to obtain the frame rate of the first camera; A judging module, configured to judge whether the frame rate is the maximum frame rate; An image acquisition module, configured to acquire a first image through the first camera with the maximum frame rate as a parameter if the judging module judges that the frame rate is the maximum frame rate; a gain obtaining module, configured to analyze the first image to obtain the white balance gain of the first image; An adjustment module, configured to adjust the white balance of the second image acquired through the second camera according to the white balance gain; A display module, configured to display the second image after the white balance has been adjusted. 7. The apparatus of claim 6, wherein The adjustment module is also used to adjust the frame rate to the maximum frame rate when the judging module judges that the frame rate is not the maximum frame rate, and trigger the image acquisition module to acquire the second frame rate through the first camera. an image. 8. The apparatus of claim 6, wherein The gain acquisition module includes: a segmentation unit, configured to segment the first image into at least one sub-image; a calculation unit, configured to calculate an average brightness value of each of the sub-images; An average value acquisition unit, used to obtain the average value of the three primary colors R, G, and B in the sub-image corresponding to the maximum brightness average value; A gain acquiring unit, configured to acquire the white balance gain according to the average value of the three primary colors R, G, and B. 9. The apparatus of claim 8, wherein The gain acquisition unit is configured to calculate the product of the maximum brightness average value and the R primary color average value as the red gain in the white balance gain; or The gain acquisition unit is configured to calculate the product of the maximum brightness average value and the G primary color average value as the green gain in the white balance gain; or The gain acquisition unit is configured to calculate the product of the maximum brightness average value and the B primary color average value as the blue gain in the white balance gain. 10. The device according to claim 6, wherein the white balance gain comprises a red gain, a green gain or a blue gain; The adjustment module includes: an image acquisition unit, configured to acquire the second image through the second camera; a rendering unit configured to render the red gain on the red channel of the second image, render the green gain on the green channel of the second image, or render the blue gain on the on the blue channel of the second image information, so as to realize the white balance adjustment of the second image. 11. A terminal, characterized by comprising the white balance adjustment device according to any one of claims 6-10.