关键词: 梅花采样方向滤波器组, 多光谱图像融合, 梅花形采样离散小波变换

Abstract: Using a characteristic that quincunx-sampled directional filter can provide rich direction information, a multi-spectral image fusion method is proposed based on the directional filter bank. An original multi-band image is converted from RGB mode to IHS mode through IHS transform. Quincunx-sampled directional filter transform is performed on the component I and the panchromatic image, corresponding low frequency sub-image and high frequency different directional sub-image are gained, and they are fused according to some fusion rules. The new I component can be obtained. A new RGB image is gotten through an inverse IHS transform. The experimental results show that the method has a better visual effect in image edge details, and has better fusion effect than IHS fusion method and the fusion method based on quincunx-sampled discrete wavelet transform.

Key words: quincunx-sampled directional filter bank, multi-spectral image fusion, quincunx-sampled discrete wavelet transform