CPC H04N 19/597 (2014.11) [H04N 19/105 (2014.11); H04N 19/176 (2014.11); H04N 19/547 (2014.11)] | 21 Claims |
1. A video decoding method, comprising:
decoding a reference frame in a source-domain from a coded video sequence;
decoding a spherical-domain motion vector for a pixel block of a current frame from the coded video sequence, the motion vector indicates a change in radii between a first radius of a first spherical domain projection of the reference frame and a second radius of a second spherical domain projection of the current frame, wherein the first radius and second radius are not the same;
transforming the reference frame from the source-domain to a spherical-domain;
generate a spherical-domain prediction of the pixel block from the transformed spherical-domain reference frame and the spherical-domain motion vector, the generating based on the change in the radius of the spherical-domain projection;
transforming the spherical-domain prediction into a source-domain prediction of the pixel block; and
generating a decoded current frame in the source-domain based on the source-domain prediction of the pixel block.
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