주소 변환 함수를 이용한 벡터 양자화 주소의 무손실 부호화 방법 = Lossless Coding method of Vector Quantization Address Using a Address Transform Function

다국어 초록 (Multilingual Abstract)

In this paper, we propose a lossless encoding method of VQ address using a address transform function based on exploiting the high interblock correlation. In the proposed method, when an original address can be transformed into a lower new address, we efficiently reduced bit-rate by encoding the transformed address by the address transform function. Address transform function that maps an original address into a new address in reordered codebook using side match error is defined. Simulation results show that the proposed scheme reduces the average bit-rate by 40∼50% in ordinary VQ for image compression, with the same quality of the reconstructed image as that of conventional VQ system.

목차 (Table of Contents)

• Ⅰ. 서론
• Ⅱ. 기존의 벡터 양자화 방법
• Ⅲ. 주소 변환 함수를 이용한 벡터 양자화 주소의 무손실 부호화 방법
• Ⅳ. 실험 및 고찰
• Ⅴ. 결론
• 참고문헌
• 표목차
• Table 1. The bit rate in various address threshold value with 8×8 higher block
• Table 2. The bit rate in various address threshold value with 16×16 higher block
• Table 3. Percentage of each case of input image in 8×8 higher block (address threshold value = 1)
• 그림목차
• Fig. 1 Block diagram of VQ system using address transform function
• Fig. 2 Side Match
• Fig. 3 Reordered codebook with side match error