System for Efficient and Secure Distribution
of Medical Images on the Internet

James Ze Wang, Gio Wiederhold
Stanford University, Stanford, CA 94305
Abstract:

Because of the high compressibility of the medical images, data compression is desirable for digital storage despite the availability of inexpensive hardware for mass storage. A progressive transmission algorithm with automatic security filtering features for on-line medical image distribution using Daubechies' wavelets has been developed and is discussed in this paper. The system is practical for real-world applications, processing and coding each 12-bit image of size 512 x 512 within 2 seconds on a Pentium Pro. Besides its exceptional speed, the security filter has demonstrated a remarkable accuracy in detecting sensitive textual information within current or digitized previous medical images. The algorithm is of linear run time.


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Last Modified: 27-Mar-98 11:05:10 PST
© 1998, James Z. Wang