关键词: 图像融合, 多聚焦图像, 支持度变换, 软空间映射

Abstract: Aimed at the drawback of the multifocus image fusion method using Support Value Transform（SVT）, a new image fusion method using softy-space mapping-based complex SVT is proposed in this paper. This method maps the image information on the real number field into its softy-space image on the complex number field, and then processes the SVT. It preserves the existing advantages of SVT and increases the image decomposition information, leading to a higher image fusion quality. Experimental results show that the method performs better in both subjective fusion results and objective evaluation indexes when compared with the results of SVT.

Key words: image fusion, multifocus image, Support Value Transform（SVT）, softy-space mapping