A method and device for image encoding, decoding and network transmission based on fpga
A technology of network transmission and image encoding, applied in the field of data network transmission, video image encoding and decoding system design, can solve the problem of not supporting 1000M Ethernet, and achieve a large follow-up development space, efficient and real-time Ethernet data transmission, The effect of performance and functionality improvements
Active Publication Date: 2021-10-22
NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
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They can support 10M / 100M Ethernet data communication, but not 1000M Ethernet
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[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.
[0070] see figure 1 , the FPGA-based image encoding and decoding and network transmission method and device system network diagram provided in the embodiment of the present invention includes five parts: the host computer at the encoding end, the encoding end, the network switching device, the decoding end, and the upper computer at the decoding end. The terminal and the decoding terminal are the core components of the system. Both the encoding end and the decoding end are connected to the network switching device through the network port. The system can process the video images collected from the camera in real time, and use a dedicated JPEG2000 encoding ASIC chip to encode the captured images in real time according to the JPEG2000 standard, and the encoded data is transmitt...
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The invention discloses an FPGA-based image codec and network transmission method and device. FPGA realizes the configuration and control of JPEG2000 encoding and decoding chips, network communication chips, etc. under the configuration instructions of the host computer at the encoding and decoding ends. The encoding end receives the video image, converts it into a digital format, and encodes the collected video image by the JPEG2000 encoding chip. The encoded data output by the encoding chip is buffered and then sent to the network communication chip to generate a network data message and send it to the Ethernet. The decoding end realizes the reception of video image data on the Ethernet by reading the network data message of the network communication chip. The decoding end buffers the network message data and sends it to the JPEG2000 decoding chip for image decoding, and then restores and displays the video image. The invention gives full play to the functions of each part and meets the real-time performance of video image encoding and decoding and the requirements of network transmission.
Description
technical field [0001] The invention relates to the technical field of system design of video image encoding and decoding, and the field of network transmission of data. Background technique [0002] As the successor of JPEG, JPEG2000 is different from the traditional JPEG standard based on discrete cosine transform. JPEG2000 is based on discrete wavelet transform and adopts the embedded coding technology EBCOT with optimal truncation function to obtain advanced compression performance. [0003] In the hardware solutions to realize JPEG2000 image decoding, generally speaking, there are mainly several methods such as FPGA-based hardware algorithm implementation, DSP processor-based system implementation, and application-specific integrated circuit implementation. Although the hardware implementation based on the FPGA platform can speed up the processing speed, the digital circuit design and implementation of the algorithm is also very difficult, and the design is relatively c...
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IPC IPC(8): H04N19/42
CPCH04N19/42
Inventor 亢琰
Owner NO 709 RES INST OF CHINA SHIPBUILDING IND CORP