How does Subsampling of Multi-View Images Affect the Rate-Distortion Performance?

This paper introduces a new theoretical model on the rate-distortion performance in transmitting multi-view image data. To reduce the data amount, a practical solution is just decreasing the number of images by subsampling. The questions we focus on are (i) how much bit-rate can be reduced, and (ii) how much additional distortion would be caused, by the subsampling of images. In our theoretical model, the rate-distortion theory and the plenoptic sampling theory are combined to consider the relation between the sampling condition (the cameras´ interval) and the compression efficiency. Numerical simulations which show the theoretical lower bounds for (i) and (ii) are presented with discussions.