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A Parallel Processing Method for Ultra High Definition Video Images

A video image and parallel processing technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of hardware system cost increase, high CPU computing resources, high development cost, etc., to improve processing speed and save computing resources , The effect of saving hardware cost

Active Publication Date: 2021-10-01
BEIJING DAYANG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing codecs based on general-purpose CPU processors need high CPU computing resources to achieve real-time codec (generally 50fps) performance. To increase computing resources requires the use of expensive high-performance CPUs, making the hardware system Increased costs
In order to solve the computing bottleneck of the CPU, the usual way is to develop special hardware, but the development cost of special hardware is also high, and the cycle is long, the versatility is poor, and it is not suitable for large-scale use, so it is urgent to find a new method for the XAVC Intra codec. Efficient implementation method

Method used

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  • A Parallel Processing Method for Ultra High Definition Video Images
  • A Parallel Processing Method for Ultra High Definition Video Images
  • A Parallel Processing Method for Ultra High Definition Video Images

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Embodiment

[0018] This embodiment is a method for parallel processing of ultra-high-definition video images. The described method uses a GPU digital video processing system with CUDA computing architecture.

[0019] The hardware system used in this embodiment can be a single video server or a cluster of video servers with a GPU, and various software required for video processing are built in. The important thing is that the GPU supports the CUDA computing architecture. The advantages of GPU in parallel processing of massive data and memory bandwidth are becoming more and more obvious. The CUDA programming model launched by NVIDIA makes the general development of GPU possible. In this embodiment, the advantage of parallel processing of CUDA is used for intra-frame prediction of video processing, thereby realizing real-time encoding and decoding of XAVCIntra 4K video format.

[0020] XAVC Intra coding uses current mainstream coding technologies such as intra prediction, transformation, qu...

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Abstract

The invention relates to a parallel processing method of ultra-high-definition video images, including: starting intra-frame encoding and decoding; classifying macroblocks; grading the 0th row macroblocks; grading other macroblocks; intra-frame encoding and decoding; and completing output. The present invention utilizes the characteristics of XAVC Intra video format encoding to classify the macroblocks in each slice in a frame image, and after the classification, utilizes the powerful parallel computing capability of the CUDA computing architecture to classify the macroblocks of the same level in all slices in the current frame as The macroblocks of the same level are processed in parallel at the same time, and the macroblocks of different levels are processed in the order of priority. The codec processing of all macroblocks in the frame is processed in parallel, which greatly improves the processing speed of intra-frame codec and saves computing resources. , and the saving of computing resources means the reduction of hardware cost.

Description

technical field [0001] The invention relates to a parallel processing method of ultra-high-definition video images, which is an electronic digital image processing method and a parallel macroblock indexing method for XAVC Intra encoding and decoding. Background technique [0002] XAVC Intra is the latest video format launched by SONY, which can record ultra-high-definition QFHD (3840x2160) and DCI 4K (4096x2160) 422 10bit videos with a reasonable bit rate. The bit rate is moderate, which meets the dual requirements of radio and television programs for speed and quality. XAVC Intra coding uses current mainstream video coding technologies including intra prediction, transformation, quantization, and entropy coding. However, the existing codecs based on general-purpose CPU processors need high CPU computing resources to achieve real-time codec (generally 50fps) performance. To increase computing resources requires the use of expensive high-performance CPUs, making the hardware...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/176H04N19/436H04N19/593
CPCH04N19/176H04N19/436H04N19/593
Inventor 张浩李永葆褚震宇田勇
Owner BEIJING DAYANG TECH DEV