Eye Movements And Coding Of Video Sequences

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Abstract
The influence of eye movements on the perception of spatiotemporal impairments and their relevance for the encoding of video sequences is discussed comprehensively. Two simple experiments show that it is neither permissable to generally blur the video signal in moving areas, nor is it justified to introduce more noise in moving areas. Eye movements slant the spatiotemporal frequency response of the HVS. The influence of eye movements on spatial and temporal masking is demonstrated by a computational model of visual perception. Smooth pursuit eye movements reduce or eliminate temporal masking, but they increase spatial masking effects. A coding system is considered, that utilizes an eye tracker to pick up the point of regard of a single viewer. Such a system has an enormous potential for data compression, but the usefulness of the approach is limited because of the delay introduced by encoding and transmission.

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