HVQ-based filtering method

摘要

A method for filtering digital data using techniques normally utilized for data compression prior to transmission or storage. These techniques include codebooks and codewords as found with vector quantization and the approach of using look-up tables as found in hierarchical vector quantization. The method described herein achieves exemplary filtering results by using the above techniques in an overlapping fashion rather than being directed in the usual manner so as to achieve data compression. The codewords thus generated by this series of overlapping look-up stages are approximations of the input data neighborhoods. The method achieves filtering by the processing and applying of a mapping function to these output codewords, thereby associating filter output values to the input digital data.