JND based Multi-description Stereo Image Coding

In this paper, two multi-description stereo image coding schemes based on JND (just noticeable difference) are proposed. JND is based on the minimum distortion characteristics that the human eye can detect. JND model can be divided into JND model of pixel domain and JND model of DCT domain, and the latter is applied in this paper. Firstly, this paper calculates the JND model of DCT domain according to the visual characteristics of human eyes. Then, it is applied to multi-description stereo image coding system. And JND-based MDROQ and JND-based MDLTPC are used in the stereo image coding scheme respectively. In both schemes, in order to improve the coding efficiency, the DCT values that less than JND threshold are set to zero, while others remain unchanged. Experimental results show that the JND based multi-description stereo image coding schemes can improve coding performance compared with other methods.

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