Wavelet transform image coding using human visual system

Wavelet transform image coding using human visual system
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DOI：
10.1109/apccas.1994.514623
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发表时间：
1994-12
期刊：
Proceedings of APCCAS'94 - 1994 Asia Pacific Conference on Circuits and Systems
影响因子：
--
通讯作者：
Imgeun Lee;Jongsik Kim;Yougkyu Kim;Seongman Kim;Gooman Park;Kyu Tae Park
Imgeun Lee;Jongsik Kim;Yougkyu Kim;Seongman Kim;Gooman Park;Kyu Tae Park
中科院分区：
其他
文献类型：
--
作者：
Imgeun Lee;Jongsik Kim;Yougkyu Kim;Seongman Kim;Gooman Park;Kyu Tae Park

文献摘要

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本文将人类视觉系统（HVS）应用于小波变换。小波变换将空间频域分解到倍频程尺度，这个过程与HVS类似。因此，HVS 的小波变换和调制传递函数 (MTF) 可以最佳耦合，以获得编码效率。通过来自小波滤波器的频率响应和MTF的积分比来确定每个子带的几个量化步长。与JPEG相比，结果显示出优越性。
Human visual system (HVS) is applied to wavelet transform in this paper. Wavelet transform decomposes the spatial frequency domain to octave band scale and this process is similar to that of HVS. So the wavelet transform and modulation transfer function (MTF) of HVS can be optimally coupled in order to gain coding efficiency. Several quantizing stepsizes are determined for each subband by integral ratio which is from frequency response of wavelet filter and MTF. Compared with JPEG, the result shows superiority.