摘要
从理论上证明了小波变换法中存在的方块效应和光谱信息损失 ,同时证明了方块效应和光谱损失与小波变换的尺度密切相关 。
Disadvantages of wavelet approaches were found by the authors as follows. When the scale of wavelet decomposition is small, mosaic occurs on the fusion image; when the scale of wavelet decomposition is large, color content of fusion image loses greatly, and when the scale of wavelet decomposition is equal to image size, mosaic disappears and color content degrades mostly. It was also found that the mosaic size is equal to the scale. The larger the scale is, the more degradation of color content will be. The reason of the above disadvantages was analyzed carefully based on one-dimensional signal model. Finally, experiments were given to illustrate the disadvantages of wavelet approaches.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第1期77-80,共4页
Journal of Infrared and Millimeter Waves
