CN111970501A - Pure color scene AE color processing method and device, electronic equipment and storage medium - Google Patents

Abstract

The invention discloses an AE color processing method for a pure color scene. The data determines whether the image is one of a pure red image, a pure green image, and a pure blue image, and if so, according to the R data corresponding to the pure red image or the G data corresponding to the pure green image or the B data corresponding to the pure blue image The automatic exposure target value is obtained by processing, otherwise, it is processed as the automatic exposure target value according to the brightness value. By identifying whether the image is a solid-color image, and in the case of a solid-color image, the present invention calls the color volume of the solid-color scene as the basis for processing the automatic exposure target value, and replaces the brightness value used in the prior art, thereby effectively improving the image quality. There are technical problems such as high brightness, loss of color information, and poor user experience in pure color scenes.

Description

Solid color scene AE color processing method, device, electronic device and storage medium

technical field

The present invention relates to the technical field of image processing, and in particular, to a method, device, electronic device and storage medium for AE color processing of solid color scenes.

Background technique

Smart cameras are the most widely used configuration of today's smart terminals. In fact, it is the photosensitive element that converts the optical signal into an electrical signal, which is received and processed by the relevant processing algorithms that support its technology. The processing of the entire signal forms a stream. The signal output collected by the same camera sensor element will form different image processing effects after different processing algorithms.

Currently mainstream mobile phones have integrated main control chips with built-in camera image processing algorithms, which can be roughly divided into AE (auto exposure), AWB (auto white balance), AF (auto focus), sharpness (sharpness)/denoise ( denoising) algorithm, etc.

The current AE processing flow includes collecting a color image through the camera sensor element, obtaining its brightness parameter from it, and then calculating the brightness target value. The AE algorithm performs statistical convergence calculation based on the brightness target value. This approach has good coverage for most scenes, but it will show limitations for large-area solid-color scenes, and the brightness often reflected does not meet the subjective needs of the human eye, becoming too bright or too dark. For example, the brightness value of the picture is 130 and the pixel value is 245. The existing method is to calculate the value of 130 with the AE algorithm, and the obtained AE target value is too large, resulting in the brightness of the picture generated by this scene than the actual human eye. Seen is higher, loses color detail, and degrades the user experience.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a method for processing AE color of a solid color scene, which can solve the problems of large color loss of pictures and poor user experience in the prior art.

The second purpose of the present invention is to provide a pure color scene AE color processing device, which can solve the problems of large color loss of pictures and poor user experience in the prior art.

The third object of the present invention is to provide an electronic device, which can solve the problems of large color loss of pictures and poor user experience in the prior art.

The fourth purpose of the present invention is to provide a storage medium, which can solve the problems of large color loss of pictures and poor user experience in the prior art.

One of the objects of the present invention adopts the following technical solutions to realize:

The AE color processing method for solid color scenes includes the following steps:

Obtain the original data of the image, calculate and obtain RGB data and luminance value according to the original data, and described RGB data includes R data, G data and B data;

According to the RGB data, determine whether the image is one of a pure red image, a pure green image, and a pure blue image, and if so, according to the R data corresponding to the pure red image or the G data corresponding to the pure green image or the pure blue image The corresponding B data is processed to obtain the automatic exposure target value, otherwise, it is processed as the automatic exposure target value according to the brightness value.

Preferably, "judging whether the image is one of a pure red image, a pure green image, and a pure blue image according to the RGB data" is specifically:

Calculate the first ratio of the R data to the G data, and the second ratio of the B data to the G data, and determine whether the image is one of a pure red image, a pure green image, and a pure blue image according to the first ratio and the second ratio. kind.

Preferably, when the first ratio is greater than the first threshold and the second ratio is less than the second threshold, the image is defined as a pure red image; when the first ratio is greater than the first threshold and the second ratio is greater than the second threshold, the image is defined as The image is a pure blue image; when the first ratio is less than the first threshold and the second ratio is less than the second threshold, the image is defined as a pure green image.

Preferably, after acquiring the original data of the image, the following steps are also performed:

Divide the image into several target areas with a preset size, and obtain the RGB data and brightness value corresponding to each target area;

"According to the RGB data, determine whether the image is one of a pure red image, a pure green image, and a pure blue image, and if so, according to the R data corresponding to the pure red image or the G data corresponding to the pure green image or the pure blue image The B data corresponding to the image is processed to obtain the automatic exposure target value" is specifically "judging whether the target area is one of a pure red image, a pure green image, and a pure blue image according to the RGB data corresponding to each target area, If so, the automatic exposure target value of the target area is obtained by processing according to the R data corresponding to the pure red image or the G data corresponding to the pure green image or the B data corresponding to the pure blue image.

Preferably, the preset size is 200*150.

The second purpose of the present invention adopts the following technical solutions to realize:

An AE color processing device for a solid color scene, comprising the following units:

Data acquisition unit: be configured to acquire the original data of the image, and obtain RGB data and brightness value by calculating according to the original data, and the RGB data includes R data, G data and B data;

Processing and judgment unit: configured to judge whether the image is one of a pure red image, a pure green image, and a pure blue image according to the RGB data, and if so, according to the R data corresponding to the pure red image or the pure green image. The G data or the B data corresponding to the pure blue image is processed to obtain the automatic exposure target value, otherwise, the automatic exposure target value is processed according to the brightness value.

Preferably, in the processing and judging unit, "judging whether the image is one of a pure red image, a pure green image, and a pure blue image according to the RGB data" is specifically:

Calculate the first ratio of the R data to the G data, and the second ratio of the B data to the G data, and determine whether the image is one of a pure red image, a pure green image, and a pure blue image according to the first ratio and the second ratio. kind.

Preferably, when the first ratio is greater than the first threshold and the second ratio is less than the second threshold, the image is defined as a pure red image; when the first ratio is greater than the first threshold and the second ratio is greater than the second threshold, the image is defined as The image is a pure blue image; when the first ratio is less than the first threshold and the second ratio is less than the second threshold, the image is defined as a pure green image.

The third purpose of the present invention adopts the following technical solutions to realize:

An electronic device provided with a memory, a processor, and a computer-readable program stored in the memory and executed by the processor, characterized in that, when the computer-readable program is executed by the processor, the invention can be implemented as described in the present invention. The AE color processing method for the solid color scene.

The fourth purpose of the present invention adopts the following technical solutions to realize:

A storage medium on which a computer-readable program executable by a processor is stored, characterized in that when the computer-readable program is executed by the processor, the AE color processing method for a solid color scene according to the present invention is implemented.

Compared with the prior art, the beneficial effects of the present invention are:

By identifying whether the image is a solid-color image, and in the case of a solid-color image, the present invention calls the color volume of the solid-color scene as the basis for processing the automatic exposure target value, instead of the brightness value used in the prior art, and can effectively improve the image quality. There are technical problems such as high brightness, loss of color information, and poor user experience in pure color scenes.

Description of drawings

FIG. 1 is a flowchart of a method for processing AE color of a solid color scene according to the present invention.

Detailed ways

Below, in conjunction with accompanying drawing and specific embodiment, the present invention is further described:

Example 1

As shown in FIG. 1 , the present invention provides a method for processing AE color of solid color scene, which specifically includes the following steps:

S1: Get the original data of the image;

S2: Calculate and obtain RGB data and a luminance value according to the original data, where the RGB data includes R data, G data and B data;

S3: Determine whether the image is one of a pure red image, a pure green image, and a pure blue image according to the RGB data, and if so, according to the R data corresponding to the pure red image or the G data corresponding to the pure green image or the pure blue image The B data corresponding to the blue image is processed to obtain the automatic exposure target value, otherwise, the automatic exposure target value is processed according to the brightness value.

Specifically, in step S3, the way of judging whether the image is one of the pure red image, the pure green image, and the pure blue image is to calculate the first ratio between the R data and the G data, and the second ratio between the B data and the G data. A ratio, according to the first ratio and the second ratio to determine whether the image is one of a pure red image, a pure green image, and a pure blue image.

As a preferred embodiment, when the first ratio is greater than the first threshold and the second ratio is less than the second threshold, the image is defined as a pure red image; when the first ratio is greater than the first threshold and the second ratio is greater than the second threshold, Then the image is determined as a pure blue image; when the first ratio is less than the first threshold, and the second ratio is less than the second threshold, the image is defined as a pure green image. The numerical value of the first threshold is set to 250, for example.

As a preferred embodiment, the following steps are further included between S1 and S2: dividing the image into several target areas with a preset size, and acquiring RGB data and luminance values corresponding to each target area. Wherein, the preset size is preferably 200*150. The unit of the preset size is the number of pixels (pixels), and the unit is pieces,

"According to the RGB data, determine whether the image is one of a pure red image, a pure green image, and a pure blue image, and if so, according to the R data corresponding to the pure red image or the G data corresponding to the pure green image or the pure blue image The B data corresponding to the image is processed to obtain the automatic exposure target value" is specifically "judging whether the target area is one of a pure red image, a pure green image, and a pure blue image according to the RGB data corresponding to each target area, If so, the automatic exposure target value of the target area is obtained by processing according to the R data corresponding to the pure red image or the G data corresponding to the pure green image or the B data corresponding to the pure blue image.

By identifying whether the image is a solid-color image, and when the image is a solid-color image, calling the color amount of the solid-color scene as the basis for processing the automatic exposure target value, instead of the brightness value used in the prior art, the prior art can be effectively improved. In the solid color scene, the picture brightness is too high, the color information is lost, and the user experience is poor.

Embodiment 2

This embodiment provides an AE color processing device for a solid color scene, including the following units:

Data acquisition unit: be configured to acquire the original data of the image, and obtain RGB data and brightness value by calculating according to the original data, and the RGB data includes R data, G data and B data;

Processing and judgment unit: configured to judge whether the image is one of a pure red image, a pure green image, and a pure blue image according to the RGB data, and if so, according to the R data corresponding to the pure red image or the pure green image. The G data or the B data corresponding to the pure blue image is processed to obtain the automatic exposure target value, otherwise, the automatic exposure target value is processed according to the brightness value.

In the processing and judging unit, "judging whether the image is one of a pure red image, a pure green image, and a pure blue image according to the RGB data" is specifically:

Calculate the first ratio of the R data to the G data, and the second ratio of the B data to the G data, and determine whether the image is one of a pure red image, a pure green image, and a pure blue image according to the first ratio and the second ratio. kind. When the first ratio is greater than the first threshold and the second ratio is less than the second threshold, the image is defined as a pure red image; when the first ratio is greater than the first threshold and the second ratio is greater than the second threshold, the image is determined to be pure red Blue image; when the first ratio is less than the first threshold, and the second ratio is less than the second threshold, the image is defined as a pure green image.

Embodiment 3

This embodiment provides an electronic device, which is provided with a memory, a processor, and a computer-readable program stored in the memory and executed by the processor, characterized in that, when the computer-readable program is executed by the processor, The AE color processing method of the solid color scene according to the present invention is realized.

Embodiment 4

This embodiment provides a storage medium on which a computer-readable program executable by a processor is stored, characterized in that, when the computer-readable program is executed by the processor, the computer-readable program as described in any one of the present invention is implemented. Solid color scene AE color processing method.

For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims (10)

1. The AE color processing method for the pure color scene is characterized by comprising the following steps of:

acquiring original data of an image, and calculating RGB data and brightness values according to the original data, wherein the RGB data comprises R data, G data and B data;

and judging whether the image is one of a pure red image, a pure green image and a pure blue image according to the RGB data, if so, processing according to R data corresponding to the pure red image or G data corresponding to the pure green image or B data corresponding to the pure blue image to obtain an automatic exposure target value, and otherwise, processing according to a brightness value to obtain the automatic exposure target value.

2. The AE color processing method for a solid color scene of claim 1, wherein the specific step of determining whether the image is one of a pure red image, a pure green image and a pure blue image according to the RGB data is:

and calculating a first ratio of the R data to the G data and a second ratio of the B data to the G data, and judging whether the image is one of a pure red image, a pure green image and a pure blue image according to the first ratio and the second ratio.

3. The AE color processing method for a solid color scene of claim 2, wherein when the first ratio is greater than the first threshold and the second ratio is less than the second threshold, the image is defined as a solid red image; when the first ratio is larger than the first threshold value and the second ratio is larger than the second threshold value, determining that the image is a pure blue image; and when the first ratio is smaller than the first threshold value and the second ratio is smaller than the second threshold value, defining the image as a pure green image.

4. The AE color processing method for solid color scenes according to claim 1, characterized in that after acquiring the raw data of the image, the following steps are further performed:

dividing the image into a plurality of target areas according to a preset size, and acquiring RGB data and a brightness value corresponding to each target area;

"determine whether the image is one of a pure red image, a pure green image, and a pure blue image according to the RGB data, if so, process the R data corresponding to the pure red image or the G data corresponding to the pure green image or the B data corresponding to the pure blue image to obtain an automatic exposure target value," specifically "determine whether the target region is one of a pure red image, a pure green image, and a pure blue image according to the RGB data corresponding to each target region, and if so, process the G data corresponding to the pure green image or the B data corresponding to the pure blue image to obtain an automatic exposure target value of the target region.

5. The AE color processing method for a solid color scene of claim 4, wherein the predetermined size is 200 x 150.

6. An AE color processing device of a pure color scene is characterized by comprising the following units:

a data acquisition unit: the method comprises the steps that original data configured for obtaining an image are calculated according to the original data to obtain RGB data and brightness values, wherein the RGB data comprise R data, G data and B data;

a processing judgment unit: the system is configured to judge whether the image is one of a pure red image, a pure green image and a pure blue image according to the RGB data, if so, the system is processed according to R data corresponding to the pure red image or G data corresponding to the pure green image or B data corresponding to the pure blue image to obtain an automatic exposure target value, otherwise, the system is processed into the automatic exposure target value according to a brightness value.

7. The AE color processing apparatus for a solid color scene according to claim 6, wherein the processing and determining unit is configured to determine whether the image is one of a pure red image, a pure green image and a pure blue image according to the RGB data by:

and calculating a first ratio of the R data to the G data and a second ratio of the B data to the G data, and judging whether the image is one of a pure red image, a pure green image and a pure blue image according to the first ratio and the second ratio.

8. The AE color processing apparatus for a solid color scene of claim 7, wherein when the first ratio is greater than the first threshold and the second ratio is less than the second threshold, the image is defined as a solid red image; when the first ratio is larger than the first threshold value and the second ratio is larger than the second threshold value, determining that the image is a pure blue image; and when the first ratio is smaller than the first threshold value and the second ratio is smaller than the second threshold value, defining the image as a pure green image.

9. An electronic device having a memory, a processor, and a computer readable program stored in the memory and executable by the processor, wherein the computer readable program, when executed by the processor, implements the AE color processing method for a solid color scene according to any one of claims 1-5.

10. A storage medium having a computer readable program stored thereon that is executable by a processor, wherein the computer readable program, when executed by the processor, implements the AE color processing method for a solid color scene according to any one of claims 1-5.

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