Video coding system with search range and method of operation thereof
A video coding system, and a method of operation thereof, includes: a source input module for receiving a frame from a video source; and a picture process module, coupled to the source input module, for generating a reference coding unit in the frame; for generating an intra copy motion vector pointing to the reference coding unit within a search range, wherein the search range does not include an upper coding tree unit of the frame; for generating a current coding unit based on the intra copy motion vector; and for generating a video bitstream based on the current coding unit for a video decoder to receive and decode for displaying on a device.
1. An encoding method, comprising:
in an encoding device:
generating an intra copy motion vector pointing to a reference coding unit within a search range in a frame of a video source,
wherein the search range includes a vertical motion range and a horizontal motion range,
wherein the vertical motion range limits a search in a vertical direction within a current coding tree unit of the frame,
wherein the horizontal motion range limits the search in a horizontal direction to the current coding tree unit and a first coding tree unit of the frame, and
wherein the first coding tree unit is adjacent in left side of the current coding tree unit in the horizontal direction;
generating a current coding unit based on the intra copy motion vector; and
generating a video bitstream based on the current coding unit.
2. The encoding method as claimed in claim 1 , wherein the search range includes the current coding tree unit of the frame.
3. The encoding method as claimed in claim 1 , wherein the search range excludes an upper coding tree unit within an upper coding unit row of the frame.
4. The encoding method as claimed in claim 1 , wherein the search range is outside of a restricted region of the frame.
5. An encoding device, comprising:
circuitry configured to:
generate an intra copy motion vector that points to a reference coding unit within a search range in a frame of a video source,
wherein the search range includes a vertical motion range and a horizontal motion range,
wherein the vertical motion range limits a search in a vertical direction within a current coding tree unit of the frame,
wherein the horizontal motion range limits the search in a horizontal direction to the current coding tree unit and a first coding tree unit of the frame and
wherein the first coding tree unit is adjacent in left side of the current coding tree unit in the horizontal direction;
generate a current coding unit based on the intra copy motion vector; and
generate a video bitstream based on the current coding unit.
6. The encoding device as claimed in claim 5 , wherein the search range excludes an upper coding tree unit within an upper coding unit row of the frame.
7. The encoding device as claimed in claim 5 , wherein the search range is outside of a restricted region of the frame.
8. The encoding device as claimed in claim 5 ,
wherein the search range is outside of a restricted region of the frame,
wherein the circuitry is further configured to generate the current coding unit in the restricted region, and
wherein the current coding unit is non-overlapping with the reference coding unit.