Wavelet and optimal requantization methodology for lossy fingerprint compression

الملخص EN

Re-quantization is a key technology for reducing the bit rate of compressed data.

This reduction of the bit rate; and in certain cases may result in signal quality degradation.

Therefore the proposed techniques used 9 / 7 wavelet transform before optimal re-quantization and finally, the output stream of coding symbols is entropy coded by lossless entropy coder; run-length encoding.

Simulation results show that a better low Bit Rate has been obtained compared with other different techniques.