D. Kasik, Dinesh Manocha, Abe Stephens, B. Brüderlin, P. Slusallek, Andreas Dietrich, E. Gobbetti, F. Marton, W. Corrêa, Iñigo Quilez
{"title":"Session details: Course 4: State of the art in massive model visualization","authors":"D. Kasik, Dinesh Manocha, Abe Stephens, B. Brüderlin, P. Slusallek, Andreas Dietrich, E. Gobbetti, F. Marton, W. Corrêa, Iñigo Quilez","doi":"10.1145/3250696","DOIUrl":"https://doi.org/10.1145/3250696","url":null,"abstract":"","PeriodicalId":184610,"journal":{"name":"ACM SIGGRAPH 2007 courses","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125239337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
When drawing or painting, many artists capture visual appearance with a coarse-to-fine sequence of boundaries and shadings. Many begin with a sketch of large, important scene features and then gradually add finer, more subtle details. Initial sketches of a painting may hold sharply defined boundaries around large, smoothly shaded regions for the largest, highest contrast and most important scene features. The artist then adds more shadings and boundaries to build up fine details, to fill in the visually empty regions and to capture rich detail everywhere. Such a procedure implicitly defines a hierarchical or coarse-to-fine scene decomposition, and we can use edge preserving filter operations such as the bilateral filters and PDEs to construct a similar decomposition for detail-preserving contrast reduction. This detail hierarchy is based on scene boundaries and shadings, an approach markedly different from the bandpass linear filter decompositions (e.g. image pyramids) that may suffer from halo artifacts. A suitable method for contrast reduction will produce no such halos.
{"title":"Intuition on boundaries, shocks and smoothing with PDEs","authors":"J. Tumblin","doi":"10.1145/1281500.1281603","DOIUrl":"https://doi.org/10.1145/1281500.1281603","url":null,"abstract":"When drawing or painting, many artists capture visual appearance with a coarse-to-fine sequence of boundaries and shadings. Many begin with a sketch of large, important scene features and then gradually add finer, more subtle details. Initial sketches of a painting may hold sharply defined boundaries around large, smoothly shaded regions for the largest, highest contrast and most important scene features. The artist then adds more shadings and boundaries to build up fine details, to fill in the visually empty regions and to capture rich detail everywhere. Such a procedure implicitly defines a hierarchical or coarse-to-fine scene decomposition, and we can use edge preserving filter operations such as the bilateral filters and PDEs to construct a similar decomposition for detail-preserving contrast reduction. This detail hierarchy is based on scene boundaries and shadings, an approach markedly different from the bandpass linear filter decompositions (e.g. image pyramids) that may suffer from halo artifacts. A suitable method for contrast reduction will produce no such halos.","PeriodicalId":184610,"journal":{"name":"ACM SIGGRAPH 2007 courses","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127185904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Botsch, M. Pauly, L. Kobbelt, P. Alliez, B. Lévy, Stephan Bischoff, Christian Rössl
In the last years triangle meshes have become increasingly popular and are nowadays intensively used in many different areas of computer graphics and geometry processing. In classical CAGD irregular triangle meshes developed into a valuable alternative to traditional spline surfaces, since their conceptual simplicity allows for more flexible and highly efficient processing.
{"title":"Geometric modeling based on polygonal meshes Video files associated with this course are available from the citation page","authors":"M. Botsch, M. Pauly, L. Kobbelt, P. Alliez, B. Lévy, Stephan Bischoff, Christian Rössl","doi":"10.1145/1281500.1281640","DOIUrl":"https://doi.org/10.1145/1281500.1281640","url":null,"abstract":"In the last years triangle meshes have become increasingly popular and are nowadays intensively used in many different areas of computer graphics and geometry processing. In classical CAGD irregular triangle meshes developed into a valuable alternative to traditional spline surfaces, since their conceptual simplicity allows for more flexible and highly efficient processing.","PeriodicalId":184610,"journal":{"name":"ACM SIGGRAPH 2007 courses","volume":"279 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121044803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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