{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T14:52:37Z","timestamp":1761663157403,"version":"build-2065373602"},"reference-count":16,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2013,3,15]],"date-time":"2013-03-15T00:00:00Z","timestamp":1363305600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Isocontour mapping is efficient for extracting meaningful information from a biomedical image in a topographic analysis. Isocontour extraction from real world medical images is difficult due to noise and other factors. As such, adaptive selection of contour generation parameters is needed. This paper proposes an algorithm for generating an adaptive contour map that is spatially adjusted. It is based on the modified active contour model, which imposes successive spatial constraints on the image domain. The adaptability of the proposed algorithm is governed by the energy term of the model. This work  focuses on mammograms and the analysis of their intensity. Our algorithm employs the  Mumford-Shah energy functional, which considers an image\u2019s intensity distribution. In mammograms, the brighter regions generally contain significant information. Our approach exploits this characteristic to address the initialization and local optimum problems of the active contour model. Our algorithm starts from the darkest region; therefore, local optima encountered during the evolution of contours are populated in less important regions, and the important brighter regions are reserved for later stages. For an unrestricted initial contour, our algorithm adopts an existing technique without re-initialization. To assess its effectiveness and robustness, the proposed algorithm was tested on a set of mammograms.<\/jats:p>","DOI":"10.3390\/s130303724","type":"journal-article","created":{"date-parts":[[2013,3,15]],"date-time":"2013-03-15T12:08:39Z","timestamp":1363349319000},"page":"3724-3738","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Multipass Active Contours for an Adaptive Contour Map"],"prefix":"10.3390","volume":"13","author":[{"given":"Jeong","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Computer Science & Engineering, Chung-Ang University, Seoul 156-756, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bo-Young","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Computer Science & Engineering, Chung-Ang University, Seoul 156-756, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Farhan","family":"Akram","sequence":"additional","affiliation":[{"name":"Department of Computer Science & Engineering, Chung-Ang University, Seoul 156-756, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Byung-Woo","family":"Hong","sequence":"additional","affiliation":[{"name":"Department of Computer Science & Engineering, Chung-Ang University, Seoul 156-756, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kwang","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Computer Science & Engineering, Chung-Ang University, Seoul 156-756, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2013,3,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1109\/TITB.2009.2033269","article-title":"Segmentation of regions of interest in mammograms in a topographic approach","volume":"14","author":"Hong","year":"2010","journal-title":"IEEE Trans. Inf. Technol. Biomed."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"321","DOI":"10.1007\/BF00133570","article-title":"Snakes: Active contour models","volume":"1","author":"Kass","year":"1988","journal-title":"Int. J. Comput. Vision"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1023\/A:1007979827043","article-title":"Geodesic active contours","volume":"22","author":"Caselles","year":"1997","journal-title":"Int. J. Comput. Vision"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1109\/34.368173","article-title":"Shape modeling with front propagation: A level set approach","volume":"17","author":"Malladi","year":"1995","journal-title":"IEEE Trans. Patt. Anal. Mach. Intell"},{"key":"ref_5","unstructured":"Li, C., Xu, C., Gui, C., and Fox, M.D. (June, January 20\u2013). Level set evolution without re-initialization: A new variational formulation. San Diego, CA, USA."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"266","DOI":"10.1109\/83.902291","article-title":"Active contours without edges","volume":"10","author":"Chan","year":"2001","journal-title":"IEEE Trans. Image Process"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"12","DOI":"10.1016\/0021-9991(88)90002-2","article-title":"Fronts propagating with curvature-dependent speed: Algorithms based on hamilton-jacobi formulations","volume":"79","author":"Osher","year":"1988","journal-title":"J. Comput. Phys."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1023\/A:1020874308076","article-title":"A multiphase level set framework for image segmentation using the mumford and shah model","volume":"50","author":"Vese","year":"2002","journal-title":"Int. J. Comput. 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Available online: http:\/\/peipa.essex.ac.uk\/info\/mias.html (accessed on 11 March 2003)."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/13\/3\/3724\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T21:45:34Z","timestamp":1760219134000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/13\/3\/3724"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,3,15]]},"references-count":16,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2013,3]]}},"alternative-id":["s130303724"],"URL":"https:\/\/doi.org\/10.3390\/s130303724","relation":{},"ISSN":["1424-8220"],"issn-type":[{"type":"electronic","value":"1424-8220"}],"subject":[],"published":{"date-parts":[[2013,3,15]]}}}