為了實(shí)現(xiàn)多光譜可見(jiàn)光遙感圖像高質(zhì)量壓縮的要求，提出以JPEG2000壓縮標(biāo)準(zhǔn)為理論，將FPGA與專用壓縮芯片ADV212相結(jié)合的空間遙感圖像壓縮方法。該系統(tǒng)設(shè)計(jì)采用ADV212，通過(guò)小波變換及熵編碼實(shí)現(xiàn)對(duì)大數(shù)據(jù)量的空間遙感圖像進(jìn)行高質(zhì)量實(shí)時(shí)壓縮，并且采用FPGA完成圖像數(shù)據(jù)輸入、壓縮碼流輸出、圖像預(yù)處理以及對(duì)ADV212的工作模式進(jìn)行控制。實(shí)驗(yàn)結(jié)果表明，該系統(tǒng)設(shè)計(jì)功耗低、成本低、調(diào)試簡(jiǎn)單合理，具有較好的壓縮效果，可滿足多光譜可見(jiàn)光遙感圖像對(duì)高質(zhì)量壓縮比的要求。

Abstract:

?In order to achieve the higher compression quality of multispectral remote sensing image，taking the JPEG2000 as the compression standard，the remote sensing image compression method is put forward，which used FPGA and special compression chip ADV212. With the ADV212 chip，high-quality real-time image compression for the large amount of remote sensing image data is realized through the wavelet transform and entropy coding. The system used FPGA to realize the image data input，the compression stream output，the image preprocessing as well as to control work mode of ADV212. Experimental results show that the system is low power consumption， low cost，simple and reasonable debugging， and has good compression effect. And the system meets the requirement of the multispectral remote sensing images high-quality compression ratio.