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《Journal of Electronics & Information Technology》 2006-03
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A Novel Algorithm of Multi-focus Image Fusion Using Adaptive PCNN

Miao Qi-guang Wang Bao-shu (School of Computer Science, Xidian University, Xi'an 710071, China) (Guilin University of Electronic Technology, Guilin 541004, China)  
The proposed new fusion algorithm is based on the improved Pulse Coupled Neural network(PCNN) model, the fundamental characteristics of multi-focus images and the properties of human vision system. Compared with the traditional algorithm where the linking strength of each neuron is the same and its value is chosen through experimentation, this algorithm uses the sharpness of each pixel as its value, so that the linking strength of each pixel can be chosen adaptively. After the processing of PCNN with the adaptive linking strength, new fire mapping images are obtained for each image taking part in the fusion. The clear objects of each original image are decided by the compare-selection operator with the fire mapping images pixel by pixel and then all of them are merged into a new clear image. Furthermore, by this algorithm, other parameters, for example, A , the threshold adjusting constant, only have a slight effect on the new fused image. It therefore overcomes the difficulty in adjusting parameters in PCNN. Experiments show that the proposed algorithm works better in preserving the edge and texture information than the wavelet transform method and the Laplacian pyramid method do in multi-focus image fusion.
【Fund】: 国家部级基金(51406050301DZ0107)资助课题
【CateGory Index】: TN911.73
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