关键词: 小波包变换, 边缘特征, 子方向梯度算子, 图像融合

Abstract: To obtain more image details, a remote sensing image fusion algorithm based on edge features was proposed. It applied wavelet packet transform, and determined fusion rules according to the wavelet coefficients and edge features of three sub-direction bands. The experiments on TM multi-spectral image and SPOT high-resolution image were carried out, and the fusion results were analyzed from both subjective and objective perspectives. The simulation results show that this method has certain improvement in both performing dimensional detail information and maintaining spectral information.

Key words: wavelet packet transform, edge feature, sub-direction gradient operator, image fusion