A Remote Sensing Image Compression Method Suited to Space-borne Application
With the development of space technology, the data of remote sensing image dramatically increase. In order to save storage space and channel bandwidth, remote sensing image must be compressed before transmitted from a spacecraft. However, the space conditions bring a lot of constraints on the image compression platform, such as much limited storage memory and the low complexity of the image compression algorithm. This paper presented an image compression method suited to the space-borne application. To solve the problem of large-size RS images taking up large cache, the compression scheme based on overlap blocks was taken. The overlap blocks of the image were multi-Ievelly decomposed by lifting wavelet. According to human visual characteristics, the lossless encoding method was used for the lowfrequency sub-band most sensitive to human vision, and the bit-plane coding method was take for the remaining high-frequency sub-bands. Simulation results show that the algorithm can remove the blocking artifacts and r ealize the high quality image compression.
image compression remote sensing image adaptive threshold wavelet transform
Yu Yanxin Song Xue
School of Electronics and Information Engineering Changchun University of Science and Technology Cha Electrical Research and Design Institute of Jilin Province Changchun 130021, China
国际会议
哈尔滨
英文
1132-1135
2011-12-24（万方平台首次上网日期，不代表论文的发表时间）