VIDEO CODING METHOD AND DEVICE USING HIGH-SPEED EDGE DETECTION, AND RELATED VIDEO DECODING METHOD AND DEVICE

摘要

A video encoding method and apparatus using fast edge detection for determining a split shape of a picture is disclosed. A split shape of coding units having a tree structure is obtained by replacing a sampling unit having a predetermined size with one of an edge pixel and a normal pixel based on a maximum high frequency component obtained through orthogonal transformation on the sampling unit and obtaining a down-sampled picture, and repeatedly performing a process of splitting the down-sampled picture into the coding units and splitting the coding unit into lower coding units according to whether the edge pixel is present in the coding unit.

主权项

1. A video encoding method comprising:
obtaining sampling units having a predetermined size from a picture; performing orthogonal transformation on each sampling unit and transforming each sampling unit into an orthogonal component and a high frequency component; performing down-sampling on the picture by replacing each sampling unit with one of an edge pixel and a normal pixel based on the high frequency component; splitting the down-sampled picture into coding units having a predetermined size; determining a split shape of the coding unit by repeatedly performing a process of splitting the coding unit into lower coding units according to whether the edge pixel is included in the coding unit; and splitting the picture into coding units having a tree structure based on the split shape of the coding unit included in the down-sampled picture, and encoding the picture based on the split coding units having the tree structure.