Abstract: Video blocks of stereo or non-stereo video sequences are coded using a parameterized motion model. For example, encoding a current block of a stereo video sequence can include determining a block-level disparity between first and second frames and identifying plane normal candidates within the current block of the first frame based on the block-level disparity. One of the plane normal candidates is selected based on rate-distortion values, and warping parameters are determined for predicting motion within the current block using the selected plane normal candidate. The current block is then encoded using a reference block generated by applying the warping parameters. Decoding that encoded block can include receiving a bitstream representing an encoded stereo video sequence, determining warping parameters for predicting motion within the encoded block based on syntax elements encoded to the bitstream, and decoding encoded block using a reference block generated by applying the warping parameters.

Abstract: Video blocks of stereo or non-stereo video sequences are coded using a parameterized motion model. For example, encoding a current block of a stereo video sequence can include determining a block-level disparity between first and second frames and identifying plane normal candidates within the current block of the first frame based on the block-level disparity. One of the plane normal candidates is selected based on rate-distortion values, and warping parameters are determined for predicting motion within the current block using the selected plane normal candidate. The current block is then encoded using a reference block generated by applying the warping parameters. Decoding that encoded block can include receiving a bitstream representing an encoded stereo video sequence, determining warping parameters for predicting motion within the encoded block based on syntax elements encoded to the bitstream, and decoding encoded block using a reference block generated by applying the warping parameters.