Video coding methods, and storage device
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsJonathan GAN, Yue Yu, Haoping Yu
Life of this patent
Estimating the term…
Abstract
Video coding methods and a storage device are provided. The method is applied to a decoder and includes: parsing a bitstream to obtain a current coding tree unit (CTU) of a current picture; determining an availability of at least one neighbouring CTU of the current CTU in the current picture according to a wavefront delay, wherein the wavefront delay is a delay in units of CTUs in a row direction between the current CTU at a current CTU row and the neighbouring CTU at a previous CTU row which are decoded in parallel; determining a prediction block in the at least one neighbouring CTU for a current coding unit (CU) in the current CTU; and decoding the current CU using the prediction block.
Claims20
A video coding method, applied to a decoder, comprising:
- parsing a bitstream to obtain a current coding tree unit (CTU) of a current picture;
- determining an availability of at least one neighbouring CTU of the current CTU in the current picture according to a wavefront delay, wherein the wavefront delay is a delay in units of CTUs in a row direction between the current CTU at a current CTU row and the neighbouring CTU at a previous CTU row which are decoded in parallel;
- determining a prediction block in the at least one neighbouring CTU for a current coding unit (CU) in the current CTU;
- and
- decoding the current CU using the prediction block.
A decoder, comprising:
- a storage device, configured to store a bitstream and at least one computer executable instruction;
- and
- a processor, coupled to the storage device, and configured to execute the at least one computer executable instruction to:
- parse the bitstream to obtain a current coding tree unit (CTU) of the current picture;
- determine an availability of at least one neighbouring CTU of the current CTU in the current picture according to a wavefront delay, wherein the wavefront delay is a delay in units of CTUs in a row direction between the current CTU at a current CTU row and the neighbouring CTU at a previous CTU row which are decoded in parallel;
- determine a prediction block in the at least one neighbouring CTU for a current coding unit (CU) in the current CTU;
- and
- decode the current CU using the prediction block.
A video coding method, applied to an encoder, comprising:
- dividing a current picture into a plurality of CTUs;
- determining an availability of at least one neighbouring CTU of a current CTU in the current picture according to a wavefront delay, wherein the wavefront delay is a delay in units of CTUs in a row direction between the current CTU at a current CTU row and the neighbouring CTU at a previous CTU row which are coded in parallel;
- performing an intra prediction on a current CU of the current CTU to obtain a prediction block from the at least one neighbouring CTU;
- and
- encoding a block vector pointing to the prediction block into a bitstream corresponding to the current picture.
Dependencies are inferred from the claim text.