A new assessment method for image fusion quality

Liu Li; Wanying Jiang; Jing Li; Ming Yuchi; Mingyue Ding; Xuming Zhang

doi:10.1117/12.2006615

28 March 2013 A new assessment method for image fusion quality

Liu Li, Wanying Jiang, Jing Li, Ming Yuchi, Mingyue Ding, Xuming Zhang

Proceedings Volume 8673, Medical Imaging 2013: Image Perception, Observer Performance, and Technology Assessment; 86731G (2013) https://doi.org/10.1117/12.2006615
Event: SPIE Medical Imaging, 2013, Lake Buena Vista (Orlando Area), Florida, United States

Abstract

Image fusion quality assessment plays a critically important role in the field of medical imaging. To evaluate image fusion quality effectively, a lot of assessment methods have been proposed. Examples include mutual information (MI), root mean square error (RMSE), and universal image quality index (UIQI). These image fusion assessment methods could not reflect the human visual inspection effectively. To address this problem, we have proposed a novel image fusion assessment method which combines the nonsubsampled contourlet transform (NSCT) with the regional mutual information in this paper. In this proposed method, the source medical images are firstly decomposed into different levels by the NSCT. Then the maximum NSCT coefficients of the decomposed directional images at each level are obtained to compute the regional mutual information (RMI). Finally, multi-channel RMI is computed by the weighted sum of the obtained RMI values at the various levels of NSCT. The advantage of the proposed method lies in the fact that the NSCT can represent image information using multidirections and multi-scales and therefore it conforms to the multi-channel characteristic of human visual system, leading to its outstanding image assessment performance. The experimental results using CT and MRI images demonstrate that the proposed assessment method outperforms such assessment methods as MI and UIQI based measure in evaluating image fusion quality and it can provide consistent results with human visual assessment.

Citation Download Citation

Liu Li, Wanying Jiang, Jing Li, Ming Yuchi, Mingyue Ding, and Xuming Zhang "A new assessment method for image fusion quality", Proc. SPIE 8673, Medical Imaging 2013: Image Perception, Observer Performance, and Technology Assessment, 86731G (28 March 2013); https://doi.org/10.1117/12.2006615

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