Selective image enhancement method for low energy target information area

Abstract

A selective subband enhancement method based on biorthogonal wavelet base is proposed. This novel image enhancement method is just for those images in which the energy of target information area is relatively lower. It includes two parts: one is enhancing the low frequency subband by wavelet decomposition and the other is building a new criterion based on entropy window to image evaluation. Experimental results show that this new scheme may result in a perfect image processing.

Keywords

wavelet transform / biorthogonal wavelet base / selective subband enhancement / entropy window / low frequency subband