关键词: 边缘信息, 权值, 多聚焦图像融合, 遗传算法, 分块加权融合

Abstract: To solve the problem of determining the weights in the spatial domain method of image fusion，a method based on weights optimized by EI （Edge Information） of objective image fusion measure is proposed，which searches the optimized weights to make the biggest EI of the fusion image，then obtains the best fusion results.The method employs generic algorithm and uses the EI as fitness function of genetic algorithm.For the multi-focus images，the optimized fusion image can be obtained by block-weighted fusion method.Experimental results show that the proposed method is better than the traditional methods.

Key words: EI（Edge Information）, weights, multi-focus image fusion, genetic algorithm, block-weighted fusion