Image processing method and device, storage medium, and terminal

Abstract

An image processing method and device, storage medium, and terminal, the method includes: providing an image to be processed, and determining a statistical histogram of the to-be-processed image; according to the pixels whose brightness is less than a preset brightness threshold in the statistical histogram determine the global mapping weight value, wherein the greater the number of pixels whose brightness is less than the preset brightness threshold, the greater the global mapping weight value; perform brightness enhancement processing on the to-be-processed image to obtain brightness enhancement image, and determine the statistical histogram of the brightness-enhanced image; according to the global mapping weight value, the statistical histogram of the to-be-processed image and the statistical histogram of the brightness-enhanced image, the statistical histogram of the to-be-processed image A global mapping process is performed to obtain a global mapping statistical histogram. The present invention has the opportunity to improve the brightness of the dark area pixels, and in the process of achieving the effect of dark light enhancement, the details of the image are adjusted to obtain better flexibility.

Description

technical field [0001] The present invention relates to the field of image processing, and in particular, to an image processing method and device, a storage medium and a terminal. Background technique [0002] In existing electronic devices, a liquid crystal display (LCD) is generally used as a display device, and the LCD screen relies on its built-in backlight module to emit light. Users can adjust the brightness of the screen by adjusting the brightness of the backlight module to suit different viewing contents. The brightness adjustment range of the backlight module is limited, and cannot provide a more comfortable screen brightness for all occasions. For example, when the ambient light is very weak, the higher backlight brightness will stimulate the eyes, and the dim details on the screen under the lower backlight cannot be clearly expressed. [0003] The dark light enhancement algorithm was created to solve this problem. When the ambient light is dim, increase the b...

AI Technical Summary

Problems solved by technology

[0005] However, in the existing global mapping processing method, the overall brightness of the image is usually adjusted. If most of the pixels in the original image are bright, this processing method will lower the overall image brightness, resulting in darker pixels. Darker, unable to achieve the effect of dark light enhancement

And it is impossible to adjust the details of the image, and the flexibility is poor

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