Journal of Medical Physics
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Year : 2021  |  Volume : 46  |  Issue : 4  |  Page : 263-277

Multi-modality medical image fusion using cross-bilateral filter and neuro-fuzzy approach

1 Department of Computer Science and Applications (DCSA), Panjab University, Chandigarh, India
2 Department of Computer Science and Applications (DCSA), Panjab University Regional Centre, Hoshiarpur, Punjab, India
3 Department of Radiotherapy, Behgal Institute of IT and Radiation Technology, Mohali, Punjab, India

Correspondence Address:
Ms. Harmeet Kaur
Department of Computer Science and Applications (DCSA), Panjab University, Chandigarh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jmp.JMP_14_21

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Context: The proposed technique uses the edge-preserving capabilities of cross-bilateral filter (CBF) and artificial intelligence technique adaptive neuro-fuzzy inference system (ANFIS) to fuse multi-modality medical images. Aims: The aim is to present the unlike information onto a single image as each modality of medical image contains the unalike domain of information. Settings and Design: First, the multi-modality medical images are decomposed using CBF by tuning its parameters: radiometric and geometric sigma producing CBF component and detail component. This detail is fed to ANFIS for fusion. On the other hand, the sub-bands obtained from DWT are fused using average rule. Reconstruction method gives final image. Subjects and Methods: ANFIS is used to train the Sugeno systems using neuro-adaptive learning. The fuzzy inference system in the ANFIS is used to define fuzzy rules for fusion. On the other hand, bior2.2 is used to decompose the source images. Statistical Analysis Used: The performance is verified on the Harvard database with five cases, and the results are equated with conventional metrics, objective metrics as well as visual inspection. The statistics of the metrics values is visualized in the form of column chart. Results: In Case 1, better results are obtained for all conventional metrics except for average gradient (AG) and spatial frequency (SF). It also achieved preferred objective metric values. In Case 2, all metrics except AG, mutual information, fusion symmetry, and SF are better values among all methods. In Cases 3, 4, and 5, all the metrics have achieved desired values. Conclusions: Experiments conclude that conventional, objective, visual evaluation shows best results for Cases 1, 3, 4, and 5.

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