2021 Volume 9 Issue 1 Pages 86-94
An efficient coding method for light fields (LFs) is presented. The method is based on a sophisticated video coding standard called High Efficiency Video Coding (HEVC), but dose not directly encode the LF images using the HEVC codec. Instead, the LF images are first transformed into a set of smaller number of images, called basis images, to remove the redundancies among the images. The basis images are then reordered to produce a temporally smooth video sequence, which is finally encoded using the HEVC codec. In the decoding process, the decoded frames are inversely transformed into the original LF. The first and final transformations are modeled using neural networks and optimized for the target LF. The frame reordering is formulated as a traveling salesman problem (TSP) and solved using a greedy method. The experimental results show that our method can achieve better rate-distortion performance than other HEVC-based light-field coding methods.
