Fingerprint compression using a modified wavelet transform and pyramid lattice vector quantization

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Fingerprint compression using a modified wavelet transform and pyramid lattice vector quantization

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Title: Fingerprint compression using a modified wavelet transform and pyramid lattice vector quantization
Author: Kasaei, S; Deriche, M; Boashash, B
Abstract: A new compression algorithm for fingerprint images is introduced. A modified wavelet packet scheme which uses a fixed decomposition structure, matched to the statistics of fingerprint images, is presented. A technique for determining the most important coefficients is introduced. The algorithm uses both hard and soft thresholding schemes to make the procedure fast and efficient. The bit allocation for each subimage of the modified coefficients is determined. Each subimage uses a different quantization technique based on its entropy. Then, a lossless compression technique, Huffman, is used to obtain further compression. The algorithm results in a high compression ratio and a high reconstructed image quality with a low computational cost, compared to other existing algorithms. The performance of the proposed algorithm is compared to that of other decomposition techniques: ordinary wavelet transform (OWT), entropy-based best basis selection (E-BBB), wavelet/scalar quantization (WSQ) and JPEG.
Description: This paper presents a new compression algorithm for fingerprint images. The algorithm is introduced, using a modified wavelet packet scheme which uses a fixed decomposition structure, designed for fingerprint images, in order to decorrelate the image pixels. (The most recent upgrade of the original software package that calculates Time-Frequency Distributions and Instantaneous Frequency estimators can be downloaded from the web site: www.time-frequency.net. This was the first software developed in the field, and it was first released publicly in 1987 at the 1st ISSPA conference held in Brisbane, Australia, and then continuously updated).
URI: http://hdl.handle.net/10576/10751
Date: 1996-11

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