Abstract:The fusion technology is remote sensing data processing an important method. The TM multi-spectral and panchromatic SPOT images are the most popular choice of remote sensing. Comparative analysis of different methods for integration of TM multi-spectral and panchromatic SPOT image with the effect of the proposed change based on HSV color space, technology Brovey arithmetic transform and Gram-Schmidt spectral sharpening three fusion combined to achieve the same panchromatic and multi-spectral sensor data fusion. The assessment of experimental results indicates that: the amount of information in terms of space, after HSV transform the image with the largest spatial information, but its spectral fidelity have the least capacity; Brovey transform the original image to maintain the maximum spectral information, while the lower level of detail of spatial information; Gram-Schmidt spectral sharpening the image after the multi-spectral image not only maintain the spectral information, while maintaining a high spectral panchromatic image spatial detail information, is a better image fusion method.