“School of Cognitive%20Sciences”
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| Paper IPM / Cognitive%20Sciences / 7437 |
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A new method for automatic landmark extraction from MR brain images is presented. In this method, landmark extraction is accomplished by modifying growing neural gas (GNG), which is a neural-network-based cluster-seeking algorithm. Using modified GNG (MGNG) corresponding dominant points of contours are borders of segmented anatomical regions from brain images. The presented method is compared to: 1) the node splitting-merging kohonen model and 2) the The-Chin algorithm (a well-known approach for dominant points extraction or ordered curves). It is shown that the proposed algorithm has lower distortion error, ability of extraction landmarks from two corresponding curves simultaneously, and also generates the best match according to five medical experts.
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