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The same method is also used to identify regions whose curvature lies within prespecified bounds.<\/jats:p>","DOI":"10.1145\/151280.151283","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T11:29:00Z","timestamp":1027769340000},"page":"160-178","update-policy":"http:\/\/dx.doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":54,"title":["Second-order surface analysis using hybrid symbolic and numeric operators"],"prefix":"10.1145","volume":"12","author":[{"given":"Gershon","family":"Elber","sequence":"first","affiliation":[{"name":"Univ. of Utah, Salt Lake City"}]},{"given":"Elaine","family":"Cohen","sequence":"additional","affiliation":[{"name":"Univ. of Utah, Salt Lake City"}]}],"member":"320","published-online":{"date-parts":[[1993,4]]},"reference":[{"key":"e_1_2_1_1_2","doi-asserted-by":"publisher","DOI":"10.1016\/0010-4485(88)90116-9"},{"key":"e_1_2_1_2_2","first-page":"12","article-title":"Surface analysis methods","volume":"6","author":"BECK J. M.","year":"1986","unstructured":"BECK , J. M. , FAROUKI , R. T. , AND HINDS , J. g . Surface analysis methods . IEEE Comput. Graph. Appl. 6 , 12 ( Dec. 1986 ), 18-36. BECK, J. M., FAROUKI, R. T., AND HINDS, J. g. Surface analysis methods. IEEE Comput. Graph. Appl. 6, 12 (Dec. 1986), 18-36.","journal-title":"IEEE Comput. Graph. Appl."},{"key":"e_1_2_1_3_2","volume-title":"Differential Geometry of Curves and Surfaces","author":"CARIV O, M","year":"1976","unstructured":"CARIV i O, M . D. Differential Geometry of Curves and Surfaces . Prentice-Hall , Englewood Cliffs, N.J. , 1976 . CARIViO, M. D. Differential Geometry of Curves and Surfaces. Prentice-Hall, Englewood Cliffs, N.J., 1976."},{"key":"e_1_2_1_4_2","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1109\/MCG.1987.277025","article-title":"Free-form solid modeling with trimmed surface patches","volume":"7","author":"CASALE M. S","year":"1987","unstructured":"CASALE , M. S . Free-form solid modeling with trimmed surface patches . IEEE Comput. Graph. Appl. 7 , 1 ( Jan. 1987 ), 33-43. CASALE, M. S. Free-form solid modeling with trimmed surface patches. IEEE Comput. Graph. Appl. 7, 1 (Jan. 1987), 33-43.","journal-title":"IEEE Comput. Graph. Appl."},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/0021-9045(86)90059-6"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1145\/282957.282962"},{"key":"e_1_2_1_7_2","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1016\/0146-664X(80)90040-4","article-title":"Discrete B-splines and subdivision techniques in computer-aided geometric design and computer graphics","volume":"14","author":"COHEN E.","year":"1980","unstructured":"COHEN , E. , LYCHE , T. , AND RIESENFELD , R . Discrete B-splines and subdivision techniques in computer-aided geometric design and computer graphics . Comput. Graph. Image Process. 14 ( 1980 ), 87 - 111 . COHEN, E., LYCHE, T., AND RIESENFELD, R. Discrete B-splines and subdivision techniques in computer-aided geometric design and computer graphics. Comput. Graph. Image Process. 14 (1980), 87-111.","journal-title":"Comput. Graph. Image Process."},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1145\/800224.806801"},{"key":"e_1_2_1_9_2","doi-asserted-by":"publisher","DOI":"10.1145\/97880.97890"},{"key":"e_1_2_1_10_2","volume-title":"Int. J. Comput. Geom. Appl. 1, i (March","author":"ELBER G.","year":"1991","unstructured":"ELBER , G. , AND COHEN , E. Error bounded variable distance offset operator for free form curves and surfaces . Int. J. Comput. Geom. Appl. 1, i (March 1991 ), 67-78. ELBER, G., AND COHEN, E. Error bounded variable distance offset operator for free form curves and surfaces. Int. J. Comput. Geom. Appl. 1, i (March 1991), 67-78."},{"key":"e_1_2_1_12_2","volume-title":"Curves and Surfaces for Computer Aided Geometric Design","author":"RIN G.","year":"1990","unstructured":"F^ RIN , G. 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Some identities for products and degree raising of splines. To appear in J. Constructive Approx. MORKEN K. Some identities for products and degree raising of splines. To appear in J. Constructive Approx."},{"key":"e_1_2_1_22_2","first-page":"4","article-title":"A procedure for generating contour lines from a Bspline surface","volume":"5","author":"SA~' IELD","year":"1985","unstructured":"SA~' rERF IELD , S. G., AND ROGERS , D. F . A procedure for generating contour lines from a Bspline surface . IEEE Comput. Graph. Appl. 5 , 4 ( April 1985 ), 71-75. SA~'rERFIELD, S. G., AND ROGERS, D. F. A procedure for generating contour lines from a Bspline surface. IEEE Comput. Graph. Appl. 5, 4 (April 1985), 71-75.","journal-title":"IEEE Comput. Graph. Appl."},{"key":"e_1_2_1_23_2","doi-asserted-by":"publisher","DOI":"10.1145\/74334.74348"},{"key":"e_1_2_1_24_2","unstructured":"STOKER J.J. Differential Geometry. Wiley New York 1969. STOKER J.J. Differential Geometry. 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