Apparatus and method for predicting coefficients of video block
AssigneeSamsung Electronics Co., Ltd.
InventorsSang-rae Lee, Jeong-hoon Park, Seung-ran Park, So-young Kim, Yu-mi Sohn
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Abstract
An apparatus and method are provided for predicting coefficients of a video block. The method, includes determining a predicted value of a DC coefficient of a current block using DC coefficients of a plurality of previous blocks that are adjacent to the current block and determining predicted values of a plurality of AC coefficients of the current block using AC coefficients of the plurality of previous blocks, independently of the determination of the predicted value of the DC coefficient of the current block.
Claims25
A method of predicting coefficients of a video block, the method comprising:
- determining a predicted value of a DC coefficient of a current block using DC coefficients of a plurality of previous blocks that are adjacent to the current block;
- and
- determining predicted values of a plurality of AC coefficients of the current block using AC coefficients of the plurality of previous blocks, independently of the determining of the predicted value of the DC coefficient of the current block.
An apparatus for predicting coefficients of a video block, the apparatus comprising:
- a memory which stores DC coefficients and AC coefficients of a plurality of previous blocks that are adjacent to a current block;
- and
- a prediction unit which determines a predicted value of a DC coefficient of the current block using the DC coefficients of the plurality of previous blocks stored in the memory, and determines predicted values of AC coefficients of the current block using the AC coefficients of the plurality of previous blocks, independently of the determination of the predicted value of the DC coefficient of the current block.
A computer-readable recording medium having recorded thereon a program for implementing a method of predicting coefficients of a video block, the method comprising:
- determining a predicted value of a DC coefficient of a current block using DC coefficients of a plurality of previous blocks that are adjacent to the current block;
- and
- determining predicted values of a plurality of AC coefficients of the current block using AC coefficients of the plurality of previous blocks, independently of the determining of the predicted value of the DC coefficient of the current block.
Dependencies are inferred from the claim text.