Decryption device and decryption method
The decoding device addresses inefficiencies in H.265/HEVC by using affine mode and threshold-based motion vector control to enhance processing efficiency and reduce memory access, improving encoding and decoding speeds.
JP7877559B2Active Publication Date: 2026-06-22PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
- Filing Date
- 2025-08-13
- Publication Date
- 2026-06-22
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Abstract
To provide a decoder capable of reducing the amount of memory access during inter prediction processing, and a decoding method.SOLUTION: A decoder includes a circuit and a memory. In a series of processing 1000, a differential motion vector is derived based on the difference between the reference motion vector and the first motion vector of the block to be processed, used for prediction in affine mode, decode the block to be processed by using the motion vector of each sub-block of the target block. When the difference motion vector is not greater than a predetermined threshold, the motion vector of each sub-block of the target block sets a first value, and when the difference motion vector is greater than a predetermined threshold, a second value that is different from the first value is set. The predetermined threshold value differs depending on whether the target block is unidirectionally predicted or bidirectionally predicted.SELECTED DRAWING: Figure 47
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Citation Information
Patent Citations
JP2018511997A
WO2018230493A1