Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Computer Engineering
Wavelet-Based Enhancement Technique For Visibility Improvement Of Digital Images, Numan ÜNaldı
Wavelet-Based Enhancement Technique For Visibility Improvement Of Digital Images, Numan ÜNaldı
Electrical & Computer Engineering Theses & Dissertations
Image enhancement techniques for visibility improvement of color digital images based on wavelet transform domain are investigated in this dissertation research.
In this research, a novel, fast and robust wavelet-based dynamic range compression and local contrast enhancement (WDRC) algorithm to improve the visibility of digital images captured under non-uniform lighting conditions has been developed. A wavelet transform is mainly used for dimensionality reduction such that a dynamic range compression with local contrast enhancement algorithm is applied only to the approximation coefficients which are obtained by low-pass filtering and down-sampling the original intensity image. The normalized approximation coefficients are transformed using …