TY - JOUR TI - A Two-Stage Multi-Objective Enhancement for Fused Magnetic Resonance Image and Computed Tomography Brain Images JO - Journal of Information Systems and Telecommunication (JIST) JA - Iranian Academic Center for Education,Culture and Research LA - en SN - 2322-1437 AU - Leena Chandrashekar AU - A Sreedevi Asundi AD - Visvesvaraya Technological University AD - Visvesvaraya Technological University Y1 - 2020 PY - 2020 VL _ 30 IS - 1 SP - 93 EP - 104 KW - Glioblastoma KW - Laplacian Pyramid KW - Image Fusion KW - Image Enhancement KW - Contrast Limited Adaptive Histogram Equalization KW - Particle Swarm Optimization DO - 10.29252/jist.8.30.93 N2 - Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) are the imaging techniques for detection of Glioblastoma. However, a single imaging modality is never adequate to validate the presence of the tumor. Moreover, each of the imaging techniques represents a different characteristic of the brain. Therefore, experts have to analyze each of the images independently. This requires more expertise by doctors and delays the detection and diagnosis time. Multimodal Image Fusion is a process of generating image of high visual quality, by fusing different images. However, it introduces blocking effect, noise and artifacts in the fused image. Most of the enhancement techniques deal with contrast enhancement, however enhancing the image quality in terms of edges, entropy, peak signal to noise ratio is also significant. Contrast Limited Adaptive Histogram Equalization (CLAHE) is a widely used enhancement technique. The major drawback of the technique is that it only enhances the pixel intensities and also requires selection of operational parameters like clip limit, block size and distribution function. Particle Swarm Optimization (PSO) is an optimization technique used to choose the CLAHE parameters, based on a multi objective fitness function representing entropy and edge information of the image. The proposed technique provides improvement in visual quality of the Laplacian Pyramid fused MRI and CT images. UR - http://rimag.ir/fa/Article/15353 L1 - http://rimag.ir/fa/Article/Download/15353 TY -JOURId - 15353