Title :
Image enhancement based on estimation of high resolution component using wavelet transform
Author :
Itoh, Yasumasa ; Izumi, Yoshinori ; Tanaka, Yutaka
Author_Institution :
NHK Sci. & Tech. Res. Labs., Tokyo, Japan
Abstract :
An image enhancement method based on multi-scale wavelet representation is discussed. Each edge in an image is analyzed by multi-resolution analysis and is classified according to the pattern of neighboring right and left edges together. A high definition image and its band-limited image are used for learning the edge relation between high resolution and low resolution. By switching the transition rule that is adapted to the input image, generating high resolution components, and using the most suitable enhancement method for each class, natural enhancement without artifacts is realized
Keywords :
image enhancement; wavelet transforms; image enhancement; multi-scale wavelet representation; natural enhancement without artifacts; wavelet transform; Degradation; Discrete wavelet transforms; Image analysis; Image converters; Image enhancement; Image resolution; Nonlinear filters; Pattern analysis; Signal resolution; Wavelet transforms;
Conference_Titel :
Image Processing, 1999. ICIP 99. Proceedings. 1999 International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-7803-5467-2
DOI :
10.1109/ICIP.1999.817162
