Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1993.11a
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- Pages.346-349
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- 1993
The efficient coding of the upper bands in subband image coding
대역분할 부호화에서 상위대역의 효율적인 부호화
- Han, Young-Oh (Dept. of Electrical Engineering, Yonsei Univ.) ;
- Park, Hyun-Soo (Dept. of Electrical Engineering, Yonsei Univ.) ;
- Shin, Joong-In (Dept. of Electrical Engineering, Yonsei Univ.) ;
- Kim, Hyung-Suk (Dept. of Electrical Engineering, Yonsei Univ.) ;
- Park, Sang-Hui (Dept. of Electrical Engineering, Yonsei Univ.)
- Published : 1993.11.26
Abstract
A method for image compression based on decomposition is presented. We design the efficient coding technique for upper band image signals. This coding technique with directive 1-D DPCM is based on the statistical properties of upper bands. Lower band image signals is encoded using 2-D DPCM. The directive 1-D DPCM is performed, scanning upper bands according to edge direction. And then the predicted error signals of upper band sis coded using B1 and Huffman code, and the predicted error signals of lower band is coded using Huffman code. The proposed system shows improved performance when compared with other existing methods with respect to peak signal to noise ratio(PSMR) and human visual system(HVS) properties.
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