Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1987.07b
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- Pages.1431-1433
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- 1987
Prediction Methods for Scene Change in Motion Compensated Hybrid Coding
이동 보상형 복합 부호화기에서 Scene Change시의 예측 방법
- Kwon, Sang-Keun (Dept. of Electrical Engineering, KAIST) ;
- Moon, Joo-Hee (Dept. of Electrical Engineering, KAIST) ;
- Kim, Han-Soo (Dept. of Electrical Engineering, KAIST) ;
- Kim, Jae-Kyoon (Dept. of Electrical Engineering, KAIST)
- 권상근 (한국과학기술원 전기 및 전자공학과) ;
- 문주희 (한국과학기술원 전기 및 전자공학과) ;
- 김한수 (한국과학기술원 전기 및 전자공학과) ;
- 김재균 (한국과학기술원 전기 및 전자공학과)
- Published : 1987.07.03
Abstract
To transmit the image data at low rate, motion compensated(MC) hybrid coding scheme is used generally. In this scheme since coder performance could be decreased when scene change happens, another prediction method must be employed. In this paper we present two prediction methods. One is using the mean of neighboring block which was already transmitted. The others is estimating the current block with the neighboring blocks. When the proposed methods are applied to the conventional Me hybrid coding scheme, it is found that SNR gain of 7 dB is achieved and bit rate can be also reduced above 30%.
Keywords