Patent Document ID: 8208535
Application ID: 10540773
Patent Status: 1

Claim One:
1. Video coding method of exploiting temporal redundancy between successive frames in a video sequence, comprising the steps wherein a reference frame, called an I-frame, is first approximated by a collection of basis functions, called atoms, and wherein either the atoms are quantized, entropy coded, and sent to a decoder or an original I-frame is encoded and transmitted to the decoder using a frame codec, and wherein following predicted frames, called P-frames, are approximated by geometric transformations of the atoms describing a previous frame, wherein the geometric transformations include translations, anisotropic dilations, and rotations, and are applied to a generating mother function g(x,y) by means of the following change of variables: g Y ⁡ ( x , y ) = 1 a ⁢ ⁢ 1 ⁢ a ⁢ ⁢ 2 ⁢ g ⁡ ( x n , y n ) , where x n = cos ⁢ ⁢ ϑ ⁢ ⁢ ( x - b 1 ) - sin ⁢ ⁢ ϑ ⁢ ⁢ ( y - b 2 ) a 1 y n = sin ⁢ ⁢ ϑ ⁢ ⁢ ( x - b 1 ) + cos ⁢ ⁢ ϑ ⁢ ⁢ ( y - b 2 ) a 2 and wherein parameters of the geometric transformation are quantized, entropy coded, and sent to the decoder in order to reconstruct the predicted frames.