Motion detection and compensation in object-oriented coding based on combined mapping parameter estimation using hierarchical structure

물체지향 부화화에서 계층적 구조를 이용한 결합형 변환 파라미터 추정 기법에 의한 움직임 검출 및 보상

This paper invetigates estimation methods of mapping parameters in object-oriented coding. In this paper, we propose a fast parameter estimation method with its performance similar to that of the conventional methods. We employ hierarchical structure in difference images to redcue the computational complexity and also combine conventional six- and eight-mapping parameter estimation methods to compensate for the performance degradation caused by employment of hierarchical structure. Computer simulation shows that the proposed mehtod gives results similar to conventional methods with greatly reduced computational complexity.