Method for controlling video code rate based on vision significance model
A bit rate control and video coding technology, which is applied in the field of video communication, can solve problems such as ambiguity and ignorance of human vision on images.
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[0049] The present embodiment adopts the reference software JM12.2 of H264 / AVC as codec, and video transmission adopts 3GPP / 3GPP2 wireless IP channel, and the following are the concrete steps of the embodiment of the present invention:
[0050] (1) According to the visual saliency model proposed in the article "Realistic avatar eye and head animation using a neurobiological model of visual attention" published by Itti et al. in the Proceedings of the 48th SPIE Annual Conference in 2003, using the image's own intensity, color, The characteristics of flickering, direction, motion, etc. are calculated separately to obtain various saliency subgraphs, and finally the saliency subgraphs of these five characteristics are fused to obtain the fused saliency diagram, and the saliency value SM of the pixel is calculated: SM = λ 1 ·I+λ 2 ·C+λ 3 ·F+λ 4 ·O+λ 5 M
[0051] Among them, λ 1 ,λ 2 ,λ 3 ,λ 4 ,λ 5 is the corresponding weighting coefficient, where the average value is 1, an...
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