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High dynamic range image partition processing method, device and computer-readable storage medium

A technology of high dynamic range and image partitioning, which is applied in the direction of image communication, TV, color TV components, etc., can solve the problems of large delay of HDR image, unable to expand the dynamic range of pictures, processing and other problems, so as to reduce delay and expand The effect of dynamic range and image detail

Active Publication Date: 2022-03-08
SHENZHEN ANGELL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a high dynamic range image partition processing method, device and computer-readable storage medium to solve the problem of large delay from the start of shooting to the generation of HDR images caused by shooting multiple pictures, and the inability to The technical problem of expanding the dynamic range and image detail processing of the captured pictures

Method used

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  • High dynamic range image partition processing method, device and computer-readable storage medium
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  • High dynamic range image partition processing method, device and computer-readable storage medium

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Embodiment 1

[0022] Such as figure 1 As shown, a high dynamic range image partition processing method provided by an embodiment of the present invention includes:

[0023] S101. In a selected picture, divide the picture into several rectangular partitions.

[0024] By partitioning the picture, the brightness threshold L1 of the bright area and the brightness threshold L2 of the dark area can be set separately for each rectangular partition, and then the brightness of the bright area of ​​each rectangular partition is suppressed and the brightness of the dark area is adjusted. Each rectangular partition The brightness suppression function (y11, y12, y13) = A (k1, x11, x12, x13) and the brightness enhancement function (y21, y22, y23) = B (k2, x21, x22, x23) can be the same or can be set separately , thereby improving the processing effect.

[0025] S102. In each of the rectangular partitions, count the number of pixels of the luminance component in the bright area and make a weighted sum t...

Embodiment 2

[0061] Such as Figure 4 As shown, the hardware structure of a high dynamic range image partition processing device provided by the embodiment of the present invention, specifically, the high dynamic range image partition processing device 20 includes at least a processor 21 , a memory 22 and a data bus 23 . The data bus 23 is used to realize the connection and communication between the processor 21 and the memory 22. The memory 22, as a computer-readable storage medium, can store at least one computer program, and these computer programs can be read, compiled and executed by the processor 21. , so as to realize the corresponding processing flow. In this embodiment, the memory 22 is used as a computer-readable storage medium, in which is stored a high dynamic range image partition processing program, which can be executed by the processor 21, so as to realize the following steps of the high dynamic range image partition processing method :

[0062] In a selected picture, div...

Embodiment 3

[0067] An embodiment of the present invention also provides a computer-readable storage medium, on which a high dynamic range image partition processing program is stored, and when the high dynamic range image partition processing program is executed by a processor, the above high Steps of a dynamic range image partition processing method.

[0068] The high dynamic range image partition processing method, device, and computer-readable storage medium provided by the embodiments of the present invention divide a selected picture into several rectangular partitions, and divide the light area and dark area of ​​each rectangular partition , use the brightness suppression function to suppress the brightness of the bright area, and the brightness enhancement function to increase the brightness of the dark area, and then perform deblocking filtering on the image after the brightness suppression and enhancement processing to remove the block effect caused by the partitioning process; ob...

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Abstract

The invention discloses a high dynamic range image partition processing method, device and computer-readable storage medium. The method includes: dividing a selected picture into several rectangular partitions; counting the brightness of bright areas in each rectangular partition The number of pixels of the component is weighted and summed as S1, the number of pixels of the brightness component of the dark area is counted and the weighted sum is S2, and the weighted sum of the brightness components of the rectangular partition is S3; in each rectangular partition, k1 =S1 / S3 is substituted into the brightness suppression function to suppress the brightness of the bright area, and the result of k2=S2 / S3 is substituted into the brightness enhancement function to enhance the brightness of the dark area; perform brightness suppression and dark areas on the bright area of ​​each rectangular partition of the picture After brightness enhancement is performed, deblocking filtering is performed on the picture and a high dynamic range image of the picture is output. The application reduces the delay from the start of shooting to the generation of pictures, and can process the captured pictures to expand the dynamic range and image details.

Description

technical field [0001] The present invention relates to the technical field of high dynamic range image partition processing, in particular to a high dynamic range image partition processing method, device and computer-readable storage medium. Background technique [0002] Dynamic Range (Dynamic Range) is used in many fields to represent the ratio of the maximum value to the minimum value of a variable. In digital images, dynamic range, also known as contrast, expresses the ratio between the maximum gray value and the minimum gray value within the displayable range of the image. For natural scenes in the real world, dynamic range represents the ratio of the brightness of the brightest light to the brightness of the darkest light. In most of the current color digital images, each channel of R, G, and B uses a byte of 8 bits to store respectively, that is to say, the representation range of each channel is 0 to 255 gray levels, where 0 to 255 is the image dynamic range. Sin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235H04N5/243H04N5/217
CPCH04N23/81H04N23/741H04N23/76
Inventor 成富平陶江波
Owner SHENZHEN ANGELL TECH