The FPGA Implementation Of JPEG2000Compression Systemapplied On Video Monitoring Platform

In the high performance video monitoring system, taking into account the transmissionbandwidth, external storage space constraint and image lossless acquisition in specificoccasions, end of image data acquisition requirements to transmisslosslessly. In this paper, thethe JPEG2000image compression system are realized by a company`s video processingplatform based on FPGA.the main work of this paper are as follows:First,in the FPGA structure achieving JPEG2000compression system, by adoptingmodular design, the compression system is divided into preprocessing module, componenttransformation module,wavelet transform module,coefficient quantization module, Tier1encoder and Tier2encoder module.Second, in the wavelet transform module,according to the demand of compression, lifting5/3wavelet is adopted and according to the characteristics of wavelet lifting coefficient,in thenumerical calculation,using the mapping structure instead of usual multiplication to To reducethe critical path delay and improve the speed of transform;at the same time, according to thelifting step`s spliting, prediction and update,using three stages pipeline to complete onedimensional transform,finally,utilizing of hardware resources and speed have been optimized.Third,inencoder module:Tier1contains the bit plane coding and arithmetic coding.thechannel parallel is adopted; in arithmetic encoder implementation,adaptive binaryarithmeticcoding and five stages pipeline are used to improve the efficiency of the encoder.in Tier2encoder module, according to the JPEG2000encoding rules, organizing the compressed dataof Tier1encoder output; according to the requirement of the platform, achieving20:1compression.Finally, we use Quartus IIand ModelSim to compile and simulate and downloadcodes toALTERA company’s StratixIII version for authentication verification and the results werecompared with MATLAB andachieves the correct function. In the wavelet transform module,the maximum operating frequencyis97.64MHZ,FPGA logic resource usage is only1%.Entire JPEG2000image compression system operating frequency is89.53MHZ, FPGA logicresources utilization rate is54%,meeting the real project`s requirements for1280*720p60Hz20:1lossless image compression.