多光谱可见光遥感图像压缩系统设计

为了实现多光谱可见光遥感图像高质量压缩的要求，提出以JPEG2000压缩标准为理论，将FPGA与专用压缩芯片ADV212相结合的空间遥感图像压缩方法。该系统设计采用ADV212，通过小波变换及熵编码实现对大数据量的空间遥感图像进行高质量实时压缩，并且采用FPGA完成图像数据输入、压缩码流输出、图像预处理以及对ADV212的工作模式进行控制。实验结果表明，该系统设计功耗低、成本低、调试简单合理，具有较好的压缩效果，可满足多光谱可见光遥感图像对高质量压缩比的要求。

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.