Wavelet and optimal requantization methodology for lossy fingerprint compression
نویسندگان
چکیده
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.
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عنوان ژورنال:
- Int. Arab J. Inf. Technol.
دوره 8 شماره
صفحات -
تاریخ انتشار 2011