Self-adaptation blue-level extension method and device

Abstract

The invention provides a self-adaptation blue-level extension method and device. The method comprises the steps of reading brightness value and chromatic value data of each pixel in an image, and judging whether a chromatic value of each pixel is in an extension region of a blue extension template or not; if it is determined that the chromatic value of the pixel is in the extension region, obtaining a corresponding gain coefficient according to the position of the chromatic value of the pixel in the blue extension template, and applying the gain coefficient for calculating a brightness value and a chromatic value obtained after pixel extension. The device comprises a pixel judging module, a gain coefficient obtaining module and a pixel extending module, wherein the pixel judging module judges whether the chromatic value of each pixel is in the extension region of the blue extension template or not, the gain coefficient obtaining module obtains the corresponding gain coefficient according to the position of the chromatic value of the pixel in the extension region, and the pixel extension module applies the gain coefficient for calculating the brightness value and the chromatic value obtained after pixel extension. By the application of the method, the chromaticity of the image is adjusted so that colors of the image can be effectively enhanced, and the image processing speed is high.

Description

technical field [0001] The invention relates to the field of image data processing, in particular to a method for adaptively extending the blue level of an image displayed by a display device and a device for realizing the method. Background technique [0002] Electronic devices with image display function mostly display images, videos, etc. through the display screen. The images, videos, etc. displayed by electronic devices all receive digital signals of images and videos, and then decode and convert the digital signals to form color signals. output to the display circuit, and finally displayed on the display screen. [0003] Since most of the existing images and video signals are encoded and compressed before being transmitted, after receiving the data, the image receiving end needs to decode and decompress the received data to obtain the original image data. However, since the electronic device is prone to loss of color information during image acquisition and image data...

AI Technical Summary

Problems solved by technology

[0008] However, the above-mentioned blue level expansion has the problems of color cast, over-enhancement, and inaccurate division of blue areas, especially for the color adaptive ability under different brightnesses, and white or gray parts are prone to over-enhancement and uneven transition. problems, or the calculation process is more complicated, the storage space is large, and it is not easy to realize low-cost hardware and software, etc.

Images