Image cooperative decoding method and apparatus based on CPU and GPU

A decoding method and image coding technology, which are applied in the field of image cooperative decoding methods and devices based on CPU and GPU, can solve problems such as large amount of calculation, affecting operation execution speed, GPU idleness, etc., to improve performance, increase overall throughput, The effect of lightening the load

Active Publication Date: 2015-12-02
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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Problems solved by technology

[0006] However, on the one hand, the tier-1 algorithm has a large amount of calculation, which will occupy more CPU resources and affect the execution speed of other types of operations; on the other hand, the GPU resources occupied by inverse quantization, wavelet inversion and DC level conversion less, causing the GPU to be idle, therefore, resulting in unreasonable utilization of CPU and GPU resources

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  • Image cooperative decoding method and apparatus based on CPU and GPU
  • Image cooperative decoding method and apparatus based on CPU and GPU
  • Image cooperative decoding method and apparatus based on CPU and GPU

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[0054] In order to further explain the technical means and effects that the present invention takes to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, its specific implementation, steps, structures, features, and methods of (name) proposed according to the present invention Efficacy in detail.

[0055] At present, for the image collected by the remote image acquisition device, the image usually goes through the following processes from being collected to being output and displayed on the remote device: image acquisition, image compression, image compression code stream transmission, image compression code stream Decoding (decompression), output display of decoding results, among them, which compression algorithm is used in the image compression process directly affects the output display quality of the final image picture, and the decoding process of the image compression code stream is the inverse of...

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Abstract

The invention provides an image cooperative decoding method and an apparatus based on a CPU and a GPU. The image cooperative decoding method based on the CPU and the GPU includes: receiving image coding bit stream, calling the CPU to conduct the header information analysis and tier-2 algorism processing of the image coding bit stream, and obtaining a first processing result; extracting an image resolution value, determining whether the resolution value is above a preset resolution threshold, calling the GPU to perform tier-1 algorism processing of the first processing result if yes, and obtaining a second processing result; and calling the GPU to perform inverse quantization processing, inverse wavelet transform, and DC level conversion of the second processing result, and obtaining decoded image data. Therefore, on one hand, the load of the CPU is reduced without influencing the decoding speed; on the other hand, the spare GPU resource is fully used so that load balance of the CPU and the GPU is realized, and the total throughput rate of the system is increased.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image cooperative decoding method and device based on CPU and GPU. Background technique [0002] At present, for the image collected by the remote image acquisition device, the image usually goes through the following processes from being collected to being output and displayed on the remote device: image acquisition, image compression, image compression code stream transmission, image compression code stream Decoding (decompression), output display of decoding results, among them, which compression algorithm is used in the image compression process directly affects the output display quality of the final image picture, and the decoding process of the image compression code stream is the inverse of the image compression process process. [0003] With the rapid development of image acquisition technology, people have higher and higher requirements for the qual...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/63H04N19/124H04N19/436H04N19/42
Inventor 李明锁于忠策周拥军贺经纬陈腾
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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