대한전기학회논문지 (The Transactions of the Korean Institute of Electrical Engineers)
- 제40권4호
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- Pages.382-393
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- 1991
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- 0254-4172(pISSN)
미디언 형태의 예측기를 이용한 DPCM 시스템
DPCM with Median Type Predictors
초록
A DPCM system employing a median predictor, which is called the predictive median-DPCM(PM-DPCM), is proposed. An interesting observation that in PM-DPCM transmission errors are often isolated and not propagated over the reconstructed signal is made, and is analyzed deterministically and statistically. In addition, it is shown that the decoder of the PM-DPCM is always a stable system. In addition, it is shown that the decoder of the PM-DPCM is always a stable system. In order to examine the performance characteristics of PM-DPCM, it is applied to real images. The results indicate that reconstructed images through the PM-DPCM can be better than those through thestandadrd DPCM when transmission errors occur, and that under noise-free conditions the PM-DPCM performs like the standard DPCM.
키워드