Rapid multi-view video color correction method

Abstract

The invention discloses a rapid multi-view video color correction method. According to the method, all multi-view video images are divided into key-frame images and non-key-frame images; with respect to the key-frame images, the accurate color correction is realized by extracting main color information, and with respect to the non-key-frame images, the rapid color correction is realized by tracking time domain, therefore, the accuracy of the color correction is ensured, and synchronously the computation complexity of color correction is greatly reduced. The method is designed with a synchronous tracking mode and an asynchronous tracking mode according to the requirements of s color correction method on the complexity and the instantaneity; by use of the synchronous tracking mode, the synchronous process of the color correction can be realized but the computation complexity is higher, and by use of the asynchronous tracking mode, the synchronous process of the color correction cannot be realized but the computation complexity is lower; therefore, adaptive tracking can be realized and the effectiveness of the color correction method is greatly improved.

Description

technical field [0001] The invention relates to a video processing method, in particular to a fast multi-view video color correction method. Background technique [0002] Since the beginning of this century, with the maturity of digital 2D (two-dimensional) video technology and the rapid development of computer, communication and network technology, people have a strong demand for a new generation of digital TV systems, which have interactive viewpoints, three-dimensional sense, etc. The characteristic that the existing digital television system does not have, Free Viewpoint Television (FTV, Free Viewpoint Television) enables users to enjoy scenes from different perspectives, and is considered to be the development direction of the next-generation digital television system. In the FTV system, how to improve the video compression efficiency of multiple video signals to reduce the occupation of transmission bandwidth resources, and how to synthesize high-quality arbitrary view...

AI Technical Summary

Problems solved by technology

However, these color correction methods pay more attention to how to improve the correction accuracy, and the color correction of multi-viewpoint video should be different from the color correction of existing multi-viewpoint images, because: On the one hand, due to the multi-viewpoint video How to carry out reasonable color correction on multi-viewpoint video to ensure the color consistency in time and space is an urgent problem to be solved; on the other hand, due to the complexity of the color correction method Generally, they are relatively high. How to use the time-domain correlation of multi-viewpoint video for fast tracking, and how to adaptively select the tracking method according to the different requirements of the multi-viewpoint video system for tracking, so as to reduce the computational complexity of color correction and improve color correction. Correction accuracy is a problem that needs to be studied and solved in the process of color correction for multi-viewpoint video

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