원문정보
초록
영어
This paper presents a hybrid content-based video coding scheme that encodes arbitrary shaped objects instead of blocks of images. The scheme achieves efficient compression for low bit-rate applications by separating moving objects from stationary background and transmitting the shape, motion and residuals for each segmented object. Furthermore, a new content-based object segmentation algorithm is proposed in the scheme, which does not assume any prior modeling of the objects being segmented. The algorithm is based on a threshold function that calculates block histograms and takes image noise into account. The experimental results show that the scheme proposed outperforms the classical object-based coding methods in terms of PSNR or the average number of bits required for coding a single frame.
목차
1. Introduction
2. Structure of Hybrid Object-based Coding
2.1. Overview
2.2. Object Motion Detection
2.3. Motion Estimation and Compensation
2.4. Motion Failure
2.5. Residual Encoding
2.6. Shape Analysis
3. Experimental Results and Analysis
4. Conclusions
References