LORD: LOw-complexity, Rate-controlled, Distributed Video Coding System

Distributed Video Coding (DVC) is an emerging coding scheme that employs principles of source coding with side information (SI) at the decoder. In this paper, we present a new DVC encoder, named LORD (LOw-complexity, Rate-controlled, Distributed video coding system). No feedback channel is used in our encoder, and an adaptive noise model that varies both spatially and temporally is employed. The SI is created using motion extrapolation, resulting in a low delay encoding process. We extend LORD for encoding videos acquired by Bayer sensors in endoscopy, in which only partial information of the colors in each pixel is known. This special video format has not been addressed yet in the DVC framework. We show that, using LORD, a significant improvement in performance is achieved over a standard intra-coding method with a similar complexity, on a set of examined videos.