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Image processing method and device, equipment and storage medium

An image processing and image technology, applied in the field of image processing, can solve the problem of loss of image details, etc., and achieve the effect of natural image and enhanced details

Pending Publication Date: 2022-03-25
CHENGDU LIGHT COLLECTOR TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide an image processing method and its device, equipment and storage medium to solve the problem of loss of details in the highlights of the image after global tone mapping

Method used

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  • Image processing method and device, equipment and storage medium
  • Image processing method and device, equipment and storage medium
  • Image processing method and device, equipment and storage medium

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Experimental program
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Embodiment approach

[0098] As an optional implementation manner of the present invention, the step of obtaining the second threshold according to the first threshold includes:

[0099] Shifting the first parameter to the left by the detail intensity transition value bits to obtain an addend, performing an addition operation on the first threshold and the addend to obtain the second threshold.

[0100] In some embodiments, the first parameter is 1.

[0101] As an optional implementation manner of the present invention, the step of obtaining an intermediate gain multiple according to the brightness of the blurred image, the first threshold and the detail intensity transition value includes:

[0102] performing a subtraction operation on the brightness of the blurred image and the first threshold value to obtain a first difference, and performing a subtraction operation on the weight bit width of the brightness of the blurred image and the detail intensity transition value to obtain a second differe...

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Abstract

The invention provides an image processing method. The method comprises the following steps: providing a plurality of original images; obtaining a blurred image according to the original image, obtaining detail information according to the difference between the original image and the blurred image, and obtaining a detail enhancement value according to the detail information; performing first mapping on the original image to obtain a first mapping image, performing second mapping on the original image to obtain a second mapping image so as to reserve details of the second mapping image, obtaining a fusion weight according to the details and brightness of the first mapping image and the details and brightness of the second mapping image, and obtaining a fusion image according to the fusion weight. Obtaining a pixel value after weight fusion according to the fusion weight; and obtaining the pixel value of the output image according to the detail enhancement value and the pixel value after weight fusion. According to the method, the details of the image are enhanced, and the problem that the details of the image after global tone mapping are lost at the highlight position is solved. The invention further provides a device and equipment for implementing the image processing method and a storage medium.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to an image processing method and its device, equipment and storage medium. Background technique [0002] The dynamic range of traditional sensors is 10 or 12bits data. In the existing technology, the real contrast ratio will be as high as 20bits, so when displaying high-dynamic range images (High-Dynamic Range, HDR), there will be loss of details and high brightness. overexposure etc. At the same time, because the first version of the traditional display device is 24-bit true color, each pass is 8 bits, and each color channel of the high dynamic image is 12 bits or higher, so the high dynamic range image cannot be displayed in the conventional display device, so it is necessary Tonemap high dynamic range images. [0003] Tone mapping is the compression of high dynamic range images, for example, in a video stream, to the range that conventional display devices can display. ...

Claims

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Application Information

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IPC IPC(8): G06T5/50G06T5/00G06T3/00
CPCG06T5/50G06T2207/10024G06T2207/20221G06T3/04G06T5/00
Inventor 李赟晟王勇宋博李佳坤
Owner CHENGDU LIGHT COLLECTOR TECH
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