According to the current status of the application for the substation monitoring, a dual video fu- sion method based on SD-MSR is proposed. Two complementary logarithms are used as the intensity transfer function, and the Retinex outputs of the two complementary characteristics are obtained, conse- quently the weight coefficients are calculated by combining the standard deviation of the Gauss function as well. The fusion results under different scale are obtained, the fusion images are also obtained by gain sum and dynamic adjustment. The method which the image enhancement and fusion are dispo...