{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,7,1]],"date-time":"2024-07-01T00:24:23Z","timestamp":1719793463459},"reference-count":14,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2007,3,21]],"date-time":"2007-03-21T00:00:00Z","timestamp":1174435200000},"content-version":"vor","delay-in-days":6653,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Systems &amp;amp; Computers in Japan"],"published-print":{"date-parts":[[1989,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>In the measurement of 3\u2010D shape by projecting a regular pattern on the object surface, it is required to extract feature points with a high accuracy and to determine their mutual relations. In this paper, 45\u2010deg rotated checker\u2010pattern projection is proposed, and a method for extracting and tracking the crossing point is presented in which the geometrical properties of the rotated checker pattern are utilized. If the pattern projector and the camera are on the same horizontal plane, a large brightness difference is produced between the horizontal and nonhorizontal (vertical and slant directions) neighbors of the crossing\u2010point pixel. By utilizing this property, crossing points are extracted. The projection profile of the brightness pattern along the vertical direction has a triangular form, and the location of the extremum of the profile gives the vertical coordinate of the crossing point. By utilizing this profile, the crossing points are classified (segmentation). On the basis of the result of segmentation, the crossing points are successively tracked and their mutual relations are determined. To demonstrate the usefulness of the method, the experiment of 3\u2010D shape measurement was made. The error of the measurement was less than 2 mm, which is due to the error in extracting the crossing point (i.e., 1 pixel at the maximum). In the measurement of a cylinder, the measurement was made along the circumference. It is shown that the measurement of the position of the crossing point on the reference plane is not required if the rotation of the object is utilized.<\/jats:p>","DOI":"10.1002\/scj.4690200706","type":"journal-article","created":{"date-parts":[[2007,7,7]],"date-time":"2007-07-07T18:08:56Z","timestamp":1183831736000},"page":"53-61","source":"Crossref","is-referenced-by-count":1,"title":["Rotated checker\u2010pattern projection and its cross\u2010point extraction and tracking for 3\u2010D object profilometry"],"prefix":"10.1002","volume":"20","author":[{"given":"Yoshiharu","family":"Yuba","sequence":"first","affiliation":[]},{"given":"Hiroshi","family":"Hirai","sequence":"additional","affiliation":[]},{"given":"Kiyoshi","family":"Tsutsumi","sequence":"additional","affiliation":[]},{"given":"Kazuo","family":"Watari","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2007,3,21]]},"reference":[{"issue":"2","key":"e_1_2_1_2_2","first-page":"103","article-title":"Distance sensing methods for robotics","volume":"26","author":"Idesawa M.","year":"1987","journal-title":"Meas. Contr."},{"key":"e_1_2_1_3_2","article-title":"Range finding and range data processing: A survey","volume":"86","author":"Yamamoto H.","year":"1987","journal-title":"I.E.I.C.E., Japan"},{"issue":"12","key":"e_1_2_1_4_2","first-page":"1421","article-title":"Determining 3\u2010D information from a 2\u2010D image with a single view","volume":"24","author":"Ikeuchi K.","year":"1983","journal-title":"Inf. Proc."},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1364\/AO.9.001467"},{"issue":"6","key":"e_1_2_1_6_2","first-page":"411","article-title":"Coded grating method for measuring three\u2010dimensional objects","volume":"61","author":"Yonezawa S.","year":"1978","journal-title":"Trans. (D), I.E.C.E., Japan"},{"issue":"3","key":"e_1_2_1_7_2","first-page":"369","article-title":"Range picture input system based on space\u2010encoding","volume":"68","author":"Sato K.","year":"1985","journal-title":"Trans. (D), I.E.C.E., Japan"},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1364\/AO.22.003977"},{"key":"e_1_2_1_9_2","doi-asserted-by":"publisher","DOI":"10.1364\/AO.23.003105"},{"key":"e_1_2_1_10_2","doi-asserted-by":"publisher","DOI":"10.1364\/AO.24.000185"},{"issue":"3","key":"e_1_2_1_11_2","first-page":"384","article-title":"Measuring of 3\u2010D objects using a recorded image projection and two cameras","volume":"68","author":"Aoki N.","year":"1985","journal-title":"Trans. (D), I.E.C.E., Japan"},{"issue":"9","key":"e_1_2_1_12_2","first-page":"1697","article-title":"A method for extracting three\u2010dimensional information using cone\u2010shaped beams of light","volume":"68","author":"Feng K.\u2010H.","year":"1985","journal-title":"Trans. (D), I.E.C.E., Japan"},{"issue":"12","key":"e_1_2_1_13_2","first-page":"1929","article-title":"Development of 3\u2010D shape measurement system using fiber grating","volume":"69","author":"Nakazawa K.","year":"1986","journal-title":"Trans. (D), I.E.C.E., Japan"},{"issue":"12","key":"e_1_2_1_14_2","first-page":"1936","article-title":"Profilometry of 3\u2010D diffuse objects by checker pattern projection","volume":"69","author":"Yuba Y.","year":"1986","journal-title":"Trans. (D), I.E.C.E., Japan"},{"key":"e_1_2_1_15_2","unstructured":"S.MoriandT.Sakakura.Fundamentals of image recognition [I]\u2014Preprocessing and shape description. Ohm Co. (1986)."}],"container-title":["Systems and Computers in Japan"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fscj.4690200706","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/scj.4690200706","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,21]],"date-time":"2023-10-21T16:52:57Z","timestamp":1697907177000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/scj.4690200706"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1989,1]]},"references-count":14,"journal-issue":{"issue":"7","published-print":{"date-parts":[[1989,1]]}},"alternative-id":["10.1002\/scj.4690200706"],"URL":"https:\/\/doi.org\/10.1002\/scj.4690200706","archive":["Portico"],"relation":{},"ISSN":["0882-1666","1520-684X"],"issn-type":[{"value":"0882-1666","type":"print"},{"value":"1520-684X","type":"electronic"}],"subject":[],"published":{"date-parts":[[1989,1]]}}}