Light field compression based on prediction propagating and wavelet packet

A novel data compression scheme of light field is presented. Different from the prior codecs, we perform image predicting and data coding in a set of subbands not directly in original images. In our approach, the original images are decomposed into subbands using wavelet packet transform, and the corresponding wavelet packet bases are divided into two parts: the predictable bases and the unpredictable bases by some criterions. In coding, a propagating algorithm and a rhombuses structure is used, and the subbands corresponding to the basis in predictable and unpredictable bases are added in sequence by relative energy until the reconstructing images meet the pre-established reconstruction quality. Experiments for two standard light fields verify the efficiency of our approach.