Multiresolution analysis of arbitrary meshes
SIGGRAPH '95 Proceedings of the 22nd annual conference on Computer graphics and interactive techniques
Browsing through High Quality Document Images with DjVu
ADL '98 Proceedings of the Advances in Digital Libraries Conference
Fast Progressive Wavelet Coding
DCC '99 Proceedings of the Conference on Data Compression
Fast Adaptive Encoder for Bi-Level Images
DCC '01 Proceedings of the Data Compression Conference
Image and video coding-emerging standards and beyond
IEEE Transactions on Circuits and Systems for Video Technology
On-Line Adaptation in Image Coding with a 2-D Tarp Filter
DCC '02 Proceedings of the Data Compression Conference
A fast and efficient topological coding algorithm for compound images
EURASIP Journal on Applied Signal Processing
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Abstract: This paper presents an algorithm for the compression of images that have "don't care" regions within them. Such regions are specified by an additional binary image, the mask, which we assume is available at both the coder and the encoder (it is transmitted separately and without loss). Unlike previous approaches, which typically fill in the masked pixels with values geared toward good compression of the image, we use a special wavelet transform which is a function of the mask, but which can be computed efficiently. We compare our method with the previous approaches by measuring the compression for a given PSNR on the valid pixels. Our algorithm is both faster and yields compression improvements of up to 18% over the current state-of-the-art coders.