{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T01:02:05Z","timestamp":1790816525882,"version":"4.1.0"},"reference-count":15,"publisher":"SPIE-Intl Soc Optical Eng","issue":"04","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Biomed. Opt."],"published-print":{"date-parts":[[2000,10,1]]},"abstract":"<jats:p>This paper presents an effective two-step scheme for automatic object detection in computed radiography (CR) images. First, various structure elements of the morphological filters, designed by incorporating available morphological features of the objects of interest including their sizes and rough shape descriptions, are used to effectively distinguish the foreign object candidates from the complex background structures. Second, since the boundaries of the objects are the key features in reflecting object characteristics, active contour models are employed to accurately outline the morphological shapes of the suspicious foreign objects to further reduce the rate of false alarms. The actual detection scheme is accomplished by jointly using these two steps. The proposed methods are tested with a database of 50 hand\u2013wrist computed radiographic images containing various types of foreign objects. Our experimental results demonstrate that the combined use of morphological filters and active contour models can provide an effective automatic detection of foreign objects in CR images achieving good sensitivity and specificity, and the accurate descriptions of the object morphological characteristics.<\/jats:p>","DOI":"10.1117\/1.1289771","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T10:19:25Z","timestamp":1027678765000},"page":"425-431","source":"Crossref","is-referenced-by-count":5,"title":["Automatic detection of foreign objects in computed radiography"],"prefix":"10.1117","volume":"5","author":[{"given":"Jianhua","family":"Xuan","sequence":"first","affiliation":[{"name":"Univ. of Maryland\/Baltimore County"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tulay","family":"Adali","sequence":"additional","affiliation":[{"name":"Univ. of Maryland\/Baltimore County"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yue J.","family":"Wang","sequence":"additional","affiliation":[{"name":"Catholic Univ. of America"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eliot L.","family":"Siegel","sequence":"additional","affiliation":[{"name":"Baltimore VA Medical Ctr.\/Univ. of Maryland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"189","reference":[{"key":"10.1117\/1.1289771_r1","doi-asserted-by":"crossref","first-page":"855","DOI":"10.1109\/34.57681","volume":"12","author":"Amini","year":"1990","journal-title":"IEEE Trans. Pattern Anal. Mach. Intell.","ISSN":"https:\/\/id.crossref.org\/issn\/0162-8828","issn-type":"print"},{"key":"10.1117\/1.1289771_r2","unstructured":"J. P. Basart, M. S. Chackalackal, and R. C. Gonzalez, \u201cIntroduction to gray-scale morphology,\u201d in\n                      Advances in Image Analysis\n                      , Y. Mahdavieh, and R. C. Gonzalez, Eds., Chap. 11, Proc. SPIE 306\u2013354 (1992)."},{"key":"10.1117\/1.1289771_r3","doi-asserted-by":"crossref","first-page":"679","DOI":"10.1109\/TPAMI.1986.4767851","volume":"8","author":"Canny","year":"1986","journal-title":"IEEE Trans. Pattern Anal. Mach. Intell.","ISSN":"https:\/\/id.crossref.org\/issn\/0162-8828","issn-type":"print"},{"key":"10.1117\/1.1289771_r4","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1016\/1049-9660(91)90028-N","volume":"53","author":"Cohen","year":"1991","journal-title":"CVGIP: Image Understand."},{"key":"10.1117\/1.1289771_r5","doi-asserted-by":"crossref","unstructured":"S. Don, M. Cohen, R. Krugger, T. Winkler, B. Katz, W. Li, R. Dreesen, N. Kennan, R. Tarver, and E. Klatte, \u201cVolume detection threshold: quantitative comparison of computed radiography and screen-film radiography in detection of pheumothoraces in an animal model that simulates the Neonate,\u201d Radiology 727\u2013730 (1995).","DOI":"10.1148\/radiology.194.3.7862970"},{"key":"10.1117\/1.1289771_r6","unstructured":"R. C. Gonzalez and R. E. Woods,\n                      Digital Image Processing\n                      , Chap. 8, Addison-Wesley, Reading, MA (1993)."},{"key":"10.1117\/1.1289771_r7","unstructured":"A. K. Jain,\n                      Fundamentals of Digital Image Processing\n                      , Prentice-Hall, Englewood Cliffs, NJ (1989)."},{"key":"10.1117\/1.1289771_r8","doi-asserted-by":"crossref","first-page":"321","DOI":"10.1007\/BF00133570","volume":"1","author":"Kass","year":"1988","journal-title":"Int. J. Comput. Vis.","ISSN":"https:\/\/id.crossref.org\/issn\/0920-5691","issn-type":"print"},{"key":"10.1117\/1.1289771_r9","doi-asserted-by":"crossref","first-page":"141","DOI":"10.2214\/ajr.167.1.8659358","volume":"167","author":"Reiner","year":"1996","journal-title":"Am. J. Roentgenol.","ISSN":"https:\/\/id.crossref.org\/issn\/0092-5381","issn-type":"print"},{"key":"10.1117\/1.1289771_r10","unstructured":"E. Siegel, \u201cThe transition to the filmless imaging department: early experience at the Baltimore VA hospital,\u201d\n                      Proc. Symposium for Computer Assisted Radiology\n                      , Carlsbad, California (1994)."},{"key":"10.1117\/1.1289771_r11","unstructured":"S. Tehrani and T. E. Weymouth, \u201cKnowledge-guided boundary detection for medical images,\u201d in\n                      Advances in Image Analysis\n                      , Y. Mahdavieh and R. C. Gonzalez, Eds., Chap. 11, pp. 454\u2013502, SPIE Optical Engineering Bellingham, WA (1992)."},{"key":"10.1117\/1.1289771_r12","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1016\/1049-9660(92)90003-L","volume":"55","author":"Williams","year":"1992","journal-title":"CVGIP: Image Understand."},{"key":"10.1117\/1.1289771_r13","unstructured":"J. Xuan, T. Adali, and Y. Wang, \u201cSegmentation of magnetic resonance brain image: integrating region growing and edge detection,\u201d\n                      Proc. IEEE International Conf. on Image Processing\n                      , pp. 544\u2013547, Washington DC (Oct. 1995)."},{"key":"10.1117\/1.1289771_r14","doi-asserted-by":"crossref","first-page":"257","DOI":"10.1117\/12.207620","volume":"2431","author":"Xuan","year":"1995","journal-title":"Proc. SPIE","ISSN":"https:\/\/id.crossref.org\/issn\/0277-786X","issn-type":"print"},{"key":"10.1117\/1.1289771_r15","unstructured":"J. Xuan, T. Adali, E. Siegel, and Y. Wang, \u201cImage quality evaluation for radiation dose optimization in CR by shape and wavelet analyses,\u201d\n                      Proc. EUSIPCO Conference\n                      , pp. 383\u2013386, Trieste, Italy (Sept. 1996)."}],"container-title":["Journal of Biomedical Optics"],"original-title":[],"link":[{"URL":"https:\/\/www.spiedigitallibrary.org\/journals\/journal-of-biomedical-optics\/volume-5\/issue-04\/425\/Automatic-detection-of-foreign-objects-in-computed-radiography\/10.1117\/1.1289771.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T00:25:31Z","timestamp":1790814331000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.spiedigitallibrary.org\/journals\/journal-of-biomedical-optics\/volume-5\/issue-04\/425\/Automatic-detection-of-foreign-objects-in-computed-radiography\/10.1117\/1.1289771.full"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2000,10,1]]},"references-count":15,"journal-issue":{"issue":"04"},"URL":"https:\/\/doi.org\/10.1117\/1.1289771","relation":{},"ISSN":["1083-3668","1560-2281"],"issn-type":[{"value":"1083-3668","type":"print"},{"value":"1560-2281","type":"electronic"}],"subject":[],"published":{"date-parts":[[2000,10,1]]}}}