Invention Grant
- Patent Title: Method and apparatus for decoding image by using transform according to block size in image coding system
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Application No.: US16853484Application Date: 2020-04-20
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Publication No.: US11206403B2Publication Date: 2021-12-21
- Inventor: Sunmi Yoo , Jangwon Choi , Jin Heo
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG ELECTRONICS INC.
- Current Assignee: LG ELECTRONICS INC.
- Current Assignee Address: KR Seoul
- Agency: Dentons US LLP
- Main IPC: H04N19/132
- IPC: H04N19/132 ; H04N19/122 ; H04N19/176 ; H04N19/61

Abstract:
A method for decoding an image by a decoding apparatus according to the present invention comprises the steps of: deriving predicted samples by performing prediction on a current block; determining whether the current block is to be divided, on the basis of a size and a maximum transform size of the current block; when the current block is determined to be divided, dividing the current block into transform blocks; deriving transform coefficients of the transform blocks; deriving residual samples by performing an inverse transform procedure for the transform coefficients; and generating a reconstructed picture on the basis of the residual samples and the predicted samples, wherein, when the size of the current block is larger than the maximum transform size, the current block is determined to be divided.
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