A quantization and dequantization hardware multiplexing algorithm and hardware structure suitable for hevc standard

A hardware structure and dequantization technology, applied in the hardware multiplexing algorithm and hardware structure field of quantization and dequantization, can solve the problems of poor compression performance and achieve high performance, high-efficiency real-time encoding, and small hardware overhead
CN104602014BActive Publication Date: 2018-04-03FUDAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
FUDAN UNIV
Publication Date
2018-04-03

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Abstract

The invention belongs to the technical field of high-definition digital video compression encoding and decoding, and specifically relates to a hardware multiplexing algorithm and a hardware structure suitable for quantization and inverse quantization under the HEVC video encoding standard. HEVC performs quantization with weights on the coefficients of different frequency components in the frequency domain after DCT transformation, which can reduce the number of coded symbol bits and improve image compression efficiency. Based on the quantization provisions in the HEVC standard, the present invention designs a hardware structure that can support quantization, inverse quantization, and multiplexing of quantization and inverse quantization through certain algorithm improvements. The present invention can realize higher performance with less hardware overhead, thereby efficiently realizing real-time encoding of high-definition video.
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Description

technical field

[0001] The invention belongs to the technical field of high-definition digital video compression encoding and decoding, and is aimed at the HEVC video encoding and decoding standard, and specifically relates to a hardware multiplexing algorithm and a hardware structure for quantization and dequantization in video encoders and decoders applicable to the HEVC video encoding standard. Background technique

[0002] HEVC (High Efficiency Video Coding) is a next-generation video codec standard proposed by JCTVC, an organization jointly established by the International Telecommunications Organization (ITU) and the Motion Picture Experts Group (MPEG). The goal is to double the compression rate compared to the previous generation standard H.264 / AVC under the premise of the same visual effect. The improvement of compression ratio comes at the cost of doubling the computational complexity.

[0003] Quantization plays a very important role in the lossy video compression...

Claims

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