Region Based Coding Scheme with Scalability
نویسندگان
چکیده
In order to satisfy the needs of new applications in a multi-resolution environment the problem of object{ oriented coding has to be addressed. In this paper two main approaches are presented to tackle this problem. First, an algorithm for shape coding is presented. It is based on a chain coding algorithm where powerful modeling techniques are used to increase the compression ratio. Second, an algorithm for interior coding is described. It is based on an arbitrarily{shaped subband transform followed by a generalized embedded zerotree wavelet algorithm. It is shown in the paper that it achieves good compression results and has additional properties such as supporting arbitrarily{shaped regions , being computationally eecient, keeping the same dimensionality in the transformed domain, being perfect reconstruction, and allowing a perfect rate control. The presented results show that the two algorithms build an eecient basis to design object{oriented video coding schemes.
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