{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,24]],"date-time":"2023-10-24T07:40:17Z","timestamp":1698133217463},"reference-count":5,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2007,3,21]],"date-time":"2007-03-21T00:00:00Z","timestamp":1174435200000},"content-version":"vor","delay-in-days":5923,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Systems &amp; Computers in Japan"],"published-print":{"date-parts":[[1991,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>This paper describes estimations of the shape of a three\u2010dimensional (3\u2010D) object from a gray\u2010level 2\u2010D image, i.e., \u201cshape from shading.\u201d The fact that the Ikeuchi\u2010Horn iterative method produces an error when this is applied to the estimation of an object having a concave surface is shown. A new method using a constraint on a zero\u2010crossing is proposed which can be applied to such an object. Examples of application of the proposed method are shown to confirm its effectiveness, from a case where several interpretations are possible from a single gray\u2010level 2\u2010D image, the proposed method can estimate all of them. Examples of such cases also are shown.<\/jats:p>","DOI":"10.1002\/scj.4690220906","type":"journal-article","created":{"date-parts":[[2007,11,16]],"date-time":"2007-11-16T09:16:36Z","timestamp":1195204596000},"page":"52-60","source":"Crossref","is-referenced-by-count":0,"title":["Estimation of 3\u2010D shape from shading by using a constraint at zero\u2010crossing"],"prefix":"10.1002","volume":"22","author":[{"given":"Manas","family":"Sangaworasil","sequence":"first","affiliation":[]},{"given":"Kouichi","family":"Kojima","sequence":"additional","affiliation":[]},{"given":"Kiyoaki","family":"Atsuta","sequence":"additional","affiliation":[]},{"given":"Shozo","family":"Kondo","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2007,3,21]]},"reference":[{"key":"e_1_2_1_2_2","first-page":"115","volume-title":"Psychology of Computer Vision","author":"Horn B. K. P.","year":"1975"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/0004-3702(81)90023-0"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/0004-3702(81)90022-9"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.1980.0020"},{"key":"e_1_2_1_6_2","article-title":"Theory of local approximation of 3\u2010D curve surface using gray\u2010level information","volume":"570","author":"Kojima Koichi","year":"1989","journal-title":"The Spring National Conference, I.E.C.E., Japan"}],"container-title":["Systems and Computers in Japan"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fscj.4690220906","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/scj.4690220906","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,23]],"date-time":"2023-10-23T02:38:11Z","timestamp":1698028691000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/scj.4690220906"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1991,1]]},"references-count":5,"journal-issue":{"issue":"9","published-print":{"date-parts":[[1991,1]]}},"alternative-id":["10.1002\/scj.4690220906"],"URL":"https:\/\/doi.org\/10.1002\/scj.4690220906","archive":["Portico"],"relation":{},"ISSN":["0882-1666","1520-684X"],"issn-type":[{"value":"0882-1666","type":"print"},{"value":"1520-684X","type":"electronic"}],"subject":[],"published":{"date-parts":[[1991,1]]}}}