Abstract
In the cross-media image reproduction technology, the accurate transfer and reproduction of colour between different media are an important issue in the reproduction process, and the colour mapping technology is the key technology to effectively maintain the image details and improve the level of colour reproduction. Wooden structure in the image colour and colour piece is different, the image of each colour of visual perception is not independent, and every colour in the image pixels is affected by the surrounding pixels, but in the process of image map, without thinking of the pixel space, adjacent pixels of mutual influence in particular, do not let a person particularly be satisfied with the resulting map figure. In the process of image processing by traditional colour mapping algorithm, the colour distortion caused by colour component is ignored and the block diagram of colour mapping system is constructed. With the continuous development of mapping recognition algorithms, the maximum and minimum brightness values in the image are mapped to the maximum and minimum brightness values of the display device by linear mapping algorithm according to the flow of the established recognition algorithm. By establishing the colour adjustment method of the colour mapping image, the processing effect of the mapping algorithm is analysed. The results show that the brightness deviation of the image is reduced and the colour resolution is improved by the colour brightness compensation.
Highlights
In the cross-media image reproduction technology, the accurate transfer and reproduction of colour between different media are an important issue in the reproduction process, and the colour mapping technology is the key technology to effectively maintain the image details and improve the level of colour reproduction
Wooden structure in the image colour and colour piece is different, the image of each colour of visual perception is not independent, and every colour in the image pixels is affected by the surrounding pixels, but in the process of image map, without thinking of the pixel space, adjacent pixels of mutual influence in particular, do not let a person be satisfied with the resulting map figure
Colour mapping is to solve the problem of large contrast attenuation to transform the brightness of the scene to the range that can be displayed, while maintaining the image details and colour information which is very important for the performance of the original scene. e colour mapping algorithm maps the range of the image to the range that the general display device can display
Summary
Colour mapping algorithm will use different mapping functions for different local areas of the image according to the neighbourhood information of the image pixels in the process of mapping. E algorithm can achieve dynamic range compression of images by eliminating the influence of illumination to obtain the reflected images reflecting the essential features of images This method will produce halo phenomenon at the high-contrast edge of the image. Is method can effectively compress the dynamic range of images and avoid visual defects such as gradient inversion and halo phenomenon, but it does not consider the accuracy of human visual system. E colour mapping algorithm based on edge preserving filter has a very good image effect. Global histogram mapping is used to compress the dynamic range; the image is segmented, and the local area of the image is adjusted adaptively to enhance the local contrast, so as to obtain better image quality [16]. It overcomes the phenomenon of colour distortion caused by ignoring colour component guide in traditional colour mapping algorithm
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