Progressive Display of Very High Resolution Images Using Wavelets
Ya Zhang and James Z. Wang
The Pennsylvania State University, University Park, PA 16802
Digital or digitized biomedical images often
have very high resolutions, which make them difficult or impossible to
display on computer screens. Therefore, it is desirable to develop a
multiresolution display method with which users can freely browse the
contents of those high resolution images. In this paper, we present an
improved wavelet-based progressive image display algorithm by
stressing on the encoding and decoding process. The encoder, which
dynamically determines levels of transform and partition of
coefficients, is based on a modified Haar wavelet transform. The decoder
retrieves the necessary data and reconstructs the requested region at
a scale specified by the user. A prototype system, which enables
virtually any size of images to be displayed progressively, has been
implemented based on this algorithm. The system has low computational
complexity for both encoding and decoding process.
Full Paper in Color
Ya Zhang and James Z. Wang, ``Progressive Display of Very High
Resolution Images Using Wavelets,'' Journal of the American Medical
Informatics Association, Proc. of AMIA Annual Symposium, vol. 2002
symposium suppl., pp. 944-948, November 2002.
Copyright 2002 AMIA.
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Thu Jul 18 13:24:00 PDT 2002
© 2002, Ya Zhang, James Z. Wang