Low Bit Rate Video Coding With Spatio-Temporal Geometric Transforms

this paper we introduce a very low bit rate video coder that employs motion estimation with geometric transforms for greater efficiency. To further improve codec's efficiency, the motion compensated errors are occasionally coded by a hybrid combination of DCT and Fractal coding (FRC) algorithms. In this context, Fractal coding is regarded as a particular case of geometric transform with contractive affine functions in the geometric domain and linear functions in the pixel domain. Its efficiency is due to its low and fixed bit rate requirement to encode self similar regions of the segmented MCP error image [8]. The paper is organised in the following order. Section 2 describes the properties o