Motion joint photographic experts group (MJPEG) video coding and decoding system based on system on chip (SOC) and method thereof

Abstract

The invention relates to a motion joint photographic experts group (MJPEG) video coding and decoding system based on a system on chip (SOC) and a method thereof. The MJPEG video coding and decoding system has the advantages that the structure is simple, the cost is low and a field programmable gate array (FPGA) is used as a development platform. The MJPEG video coding and decoding system is characterized in that the system comprises an image acquisition and conversion device, the image acquisition and conversion device is connected with a video coding and decoding FPGA platform, the video coding and decoding FPGA platform communicates with an upper computer, the video coding and decoding FPGA platform is additionally connected with a memory module, a display module and an input device, the image acquisition and conversion device can realize the acquisition of video data and can convert analog video signals into digital signals which are compliant with ITU-R BT.656 standards, and the video coding and decoding FPGA platform is provided with a video coding module, a video decoding module, an inter-integrated circuit (IIC) configuration module, a national institute of open schooling (Nios) processor, a video signal conversion control module, a video signal control module, a video signal display control module, an input / output port, a universal asynchronous receiver transmitter (UART) module and a bus control module.

Description

technical field [0001] The invention belongs to the field of video codec, in particular to a SOC-based MJPEG video codec system and method thereof. Background technique [0002] The current image processing systems can be roughly divided into two categories, general-purpose video image processing systems and special-purpose image processing systems. The former is generally based on general-purpose computers, such as workstations and microcomputers. Many of them are PC-based processing systems. The special-purpose processing system is generally designed on the basis of an embedded system, and DSP and programmable logic array are usually added to increase the performance of the system. [0003] Since the image data is characterized by a large amount of data and a large amount of calculation, it is very time-consuming. At the same time, the general-purpose image processing system based on PC is basically performed sequentially, so the number of video image signals that this ...

AI Technical Summary

Problems solved by technology

[0003] Since the image data is characterized by a large amount of data and a large amount of calculation, it is very time-consuming

At the same time, the general-purpose image processing system based on PC is basically executed sequentially, so the number of video image signals that this system can process is very limited, which is not conducive to expansion

Another shortcoming of the general-purpose video image processing system is poor portability and inconvenient system upgrades

Because general-purpose video and image processing systems are built with integrated chips, once the finished product is finished, it can no longer be modified, and it does not have the ability to be programmed, so it is impossible to upgrade the system according to the actual situation.

Therefore, in order to improve processing capability and practical application capability, general-purpose video image processing systems generally use independent image processing cards and independent video memory, but this will increase the volume of the system and reduce integration and reliability.

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