Title :
Wavelet transform image coding using human visual system
Author :
Lee, Imgeun ; Kim, Jongsik ; Kim, Youngkyu ; Kim, Seongman ; Park, Gooman ; Park, Kyu Tae
Author_Institution :
Dept. of Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
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
Keywords :
data compression; frequency response; image coding; optical transfer function; wavelet transforms; coding efficiency; frequency response; human visual system; integral ratio; modulation transfer function; octave band scale; quantizing stepsizes; spatial frequency domain; wavelet transform image coding; Filters; Frequency domain analysis; Frequency response; Humans; Image coding; Modulation coding; Transfer functions; Visual system; Wavelet domain; Wavelet transforms;
Conference_Titel :
Circuits and Systems, 1994. APCCAS '94., 1994 IEEE Asia-Pacific Conference on
Conference_Location :
Taipei
Print_ISBN :
0-7803-2440-4
DOI :
10.1109/APCCAS.1994.514623
