遥感卫星自截断SPIHT压缩译码技术

Self-trunction decoding of spiht for remote sensing satellite

链表式 SPIHT算法是目前公认最好的压缩方案 ,但是由于其传输中具有极差的抗误码特性 ,在遥感图像数据压缩中的应用具有一定局限性。本文提出的自截断式 SPIHT压缩算法使得译码器在出现“致命性”误码的情况下能够自动中止该帧数据流译码 ,使得误码不至于扩散到整幅图像之中 ,为

SPIHT coding is one of the best image algorithms present.Since its badly error resilent characteristics,it has somewhat obstacle to remote sensing satellite implementation.A self trunction SPIHT decoding algorithm is proposed.On account of our algorithm,the decoder can ceise the decoding process automaticly when an 'dead' error is detected.The fact that single bit error can not expand to the whole image makes our self truncation algorithm possible in the application of satellite remote sensing process.