he Image Coding with Two Dimensions Control Over the ROI
基于ROI的2D控制图像编码

The image is a vital tool used for communication in the multimedia application. The real time and secure transmission of the image is important to the prevalence of the multimedia application over the Internet. However, when the image transmits over the packets loss channel such as the Internet, the receiver may wait for a long time to get the total Bit stream and then to reconstruct it to the image. This paper presents a new Fine Granular Scalable coding based on the image object, which incorporate the image object coding with the Bit plane coding. On the one hand, this algorithm has the ability granularly enhancing the quality of the image. On the other hand, it has more flexibility in controlling the ROI(region of interest)than the other coding algorithm by setting the priority of the image object and upshifting the bit plane. Firstly, this paper describes the coding framework of this algorithm and then separately discuss the key techniques such as the bit plane coding,selective enhancement,bit stream structure and the controlling strategy. At last, the experiments are given to validate the two features of this algorithm: the fine granular and the flexible control.