| Summary: | 碩士 === 國立成功大學 === 電腦與通信工程研究所 === 102 === Satellite images are the very important part in the remote sensing system, and CCSDS compression algorithm is a common standard such that image transportation in space is more convenient, but the noise in space makes the compressed file corrupt during transmission. In this thesis, a modified CCSDS compression algorithm for single error bit correction is proposed to solve error correction problem. In header part, the header is protected by using parity sharing scheme with Error-Correcting Codes(ECC) and even parity. In DC gaggle part, there are two different methods, one is changing the coding method from VLC to RVLC. The other is reconstructing DC coefficient gaggle from only one reference DC coefficient to multiple reference DC coefficients. Both two methods can make the error propagating problem as less as possible. Experimental results show that the proposed methods achieve good results.
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