Natural colorization method of black and white video images in visible light based on color transfer

Abstract

The invention relates to a visible light black and white video image natural colorization method based on color transferring, and belongs to the technical field of image processing technology. According to the visible light black and white video image natural colorization method, firstly, inputted visible light black and white video image is subject to negation, so that a negative image is obtained; the inputted visible light black and white video image and the obtained negative image are subject to linear combination according to a ratio, so that an initial color video image is obtained; the color reference image of a natural environment is selected, and the obtained initial color video image is subject to color transferring, so that a natural color video image is obtained. According to the visible light black and white video image natural colorization method, a person can view the natural image after colorization pleasantly with little artificial interference, colorization can be quickly realized in a real-time manner, and observation efficiency of a human eye is greatly improved.

Description

technical field [0001] The invention relates to a natural colorization method of visible light black-and-white video images based on color transfer, and belongs to the technical field of image processing. Background technique [0002] The human eye's ability to distinguish color images is far greater than that of black and white grayscale images. Humans can distinguish thousands of hues and intensities, compared to only 20 grayscales. Therefore, color images have always been one of the goals pursued by people. [0003] The colorization of old black and white photos has been a research topic for many years. Similarly, for old black and white videos, or CCD / CMOS output black and white video images commonly used in military and industry (such as computed tomography CT and nuclear magnetic resonance MRI in medical treatment, micro Light night vision and other fields), in order to improve the observation effect and reaction speed of human eyes to image details, and improve the o...

AI Technical Summary

Problems solved by technology

[0004] However, most of the existing black-and-white image colorization technologies not only require a lot of human intervention, but also have a slow processing speed and are difficult to process in real time

Although the black-and-white image colorization technology (such as rainbow coding) that can be processed in real time is fast, the visual effect of colorization is often unnatural, which is quite different from the common color perception in nature, and it is difficult to satisfy the long-term observation of human eyes. It makes people's eyes tired and even makes people feel irritable, which greatly affects the use effect

[0005] To sum up, how to colorize black-and-white video images of visible light in real time and in a natural sense, so that the colorized image can not only be viewed naturally and comfortably by human eyes, but also minimize unnecessary human intervention is still a challenging problem.

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