Frame differencing-based segmentation for low bit rate video codec using H.264

Abstract

In video sequence coding, a combination of temporal and spatial coding technique is used in order to remove the predictable or redundant image content and encode only the unpredictable information. The objective of video compression technique is to increase the coding efficiency and to increase the data rate savings. A segmentation-based compression method is proposed to achieve this goal. In this paper, static portions are identified using frame differencing method and segmented during the encoding process. This encoded information is passed to the synthesiser. In synthesis, information which is passed during segmentation process is added to reconstruct the video. This method is integrated with the conventional video codec H.264/AVC video codec. Experimental results substantially proved the data rate is reduced by as much as 25%.

New context of compression problem and approach to solution: a survey of the literature

“…Block-based parametric approaches can also create blocking artefacts in the synthesized texture. Region-based parametric approach on the other hand can synthesize a variety of textures however they are computationally complex and segmentation stage [203] needs to be absolutely accurate else there can be a propagation error. Region-based parametric approach cannot be seamlessly integrated with-in the state-of-the-art standard video codecs such as H.264/AVC and HEVC.…”