Image processing device and method
An image processing device and image processing technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problem of high computing cost
Pending Publication Date: 2021-09-21
SONY CORP
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AI Technical Summary
Problems solved by technology
[0008] At the same time, the computation cost of gradient (G) and velocity (V) obtained in BIO is very high
Method used
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no. 1 approach
[0065] 1. First implementation (example partition with vPU)
[0066] 2. Second Embodiment (Exemplary Operation Sharing with Flags)
no. 3 approach
[0067] 3. Third embodiment (example partition with sPU)
no. 4 approach
[0068] 4. Fourth Embodiment (Example of Prohibited Use of BIO)
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The present technology pertains to an image processing device and a method that make it possible to reduce a buffer size. The image processing device divides a unit of processing for calculating a cost used for determination of whether to perform bi-directional prediction into divided units of processing each having a size equivalent to a VPDU size or less than or equal to the VPDU size, and performs determination using the cost calculated on the basis of the divided processing unit. The present technology can be applied to an encoding device or a decoding device.
Description
technical field [0001] The present technology relates to an image processing device and method, and in particular, to an image processing device and method that achieve a reduction in buffer size. Background technique [0002] As a successor to AVC / H.264 and HEVC / H.265, the VVC standard has been developed as a next-generation codec. [0003] In the VVC standard that adopts a large CU (Coding Unit) up to 128×128, in particular, the concept of VPDU (Virtual Pipeline Data Unit) is also introduced in consideration of the increase in circuit scale and power consumption in the HW decoder implementation . [0004] The VPDU size is the buffer size that allows smooth processing at each pipeline stage. The VPDU size is usually set to the maximum size of a TU (Transform Unit). [0005] In VVC, the maximum TU size is 64x64, and it is assumed that the same applies to VPDUs. In VVC, one CU corresponds to one PU, and thus an inter prediction process needs to be performed on a PU larger...
Claims
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IPC IPC(8): H04N19/109H04N19/147H04N19/176H04N19/436
CPCH04N19/109H04N19/147H04N19/176H04N19/436H04N19/433H04N19/577H04N19/567H04N19/119
Inventor 菱沼信介近藤健治
Owner SONY CORP