Title :
Wavelet packet shrinkage based adaptive resampling
Author :
Huang, Chia-Chun ; Sabharwal, Ashutosh ; Zheng, Yuan F. ; Potter, Lee C.
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
We present an adaptive compression and resampling technique using wavelet packet shrinkage. The motivating application is surface digitization for computer-aided manufacturing. The objective is to improve estimation accuracy using a sparse and irregular, but more accurate, resampling of the data. We provide modified thresholds for wavepacket shrinkage, heuristics for choosing the resampling grid, and a mean estimator using measured data. Computed results illustrate application of the proposed technique
Keywords :
CAD/CAM; adaptive signal processing; data compression; signal sampling; wavelet transforms; adaptive compression; adaptive resampling; computer-aided manufacturing; estimation accuracy; heuristic; mean estimator; measured data; modified thresholds; resampling grid; surface digitization; wavelet packet shrinkage; Application software; Computer aided manufacturing; Costs; Design automation; Image sampling; Interpolation; Manufacturing processes; Optical surface waves; Photometry; Wavelet packets;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3192-3
DOI :
10.1109/ICASSP.1996.544104
