Pub Date : 1998-10-26DOI: 10.1109/PCCGA.1998.732094
W. Perng, Yungkang Wu, M. Ouhyoung
Image Talk uses a single image to automatically create talking sequences in real time. The image can be acquired from a photograph, video clip, or hand drawn characters. This interactive system accepts Chinese text and talks back in Mandarin Chinese, generating facial expression in real time. Image Talk analyzes Chinese text by converting it to a standard Pinyin system used in Taiwan and fetches the associated facial expressions from an expression pool. The expressions are synchronized with the sound and played back in a talking sequence. Image Talk also incorporates eye blinking, small scale head rotation and translation perturbations, to make the resulting sequence more natural. It is also easy to switch to any other face images. The result is quite entertaining, and can easily be used as a new human machine interface, as well as for lip sync in computer animated characters.
{"title":"Image Talk: a real time synthetic talking head using one single image with Chinese text-to-speech capability","authors":"W. Perng, Yungkang Wu, M. Ouhyoung","doi":"10.1109/PCCGA.1998.732094","DOIUrl":"https://doi.org/10.1109/PCCGA.1998.732094","url":null,"abstract":"Image Talk uses a single image to automatically create talking sequences in real time. The image can be acquired from a photograph, video clip, or hand drawn characters. This interactive system accepts Chinese text and talks back in Mandarin Chinese, generating facial expression in real time. Image Talk analyzes Chinese text by converting it to a standard Pinyin system used in Taiwan and fetches the associated facial expressions from an expression pool. The expressions are synchronized with the sound and played back in a talking sequence. Image Talk also incorporates eye blinking, small scale head rotation and translation perturbations, to make the resulting sequence more natural. It is also easy to switch to any other face images. The result is quite entertaining, and can easily be used as a new human machine interface, as well as for lip sync in computer animated characters.","PeriodicalId":164343,"journal":{"name":"Proceedings Pacific Graphics '98. Sixth Pacific Conference on Computer Graphics and Applications (Cat. No.98EX208)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122149457","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}
Pub Date : 1998-10-26DOI: 10.1109/PCCGA.1998.732079
G. Baciu, Wingo Sai-Keung Wong, Hanqiu Sun
Object interactions are ubiquitous in interactive computer graphics, 3D object motion simulations, virtual reality and robotics applications. Most collision detection algorithms are based on geometrical object space interference tests. Some algorithms have employed an image space approach to the collision detection problem. We demonstrate an image space collision detection process that allows substantial computational savings during the image space interference test. This approach makes efficient use of the graphics rendering hardware for real time complex object interactions.
{"title":"RECODE: an image-based collision detection algorithm","authors":"G. Baciu, Wingo Sai-Keung Wong, Hanqiu Sun","doi":"10.1109/PCCGA.1998.732079","DOIUrl":"https://doi.org/10.1109/PCCGA.1998.732079","url":null,"abstract":"Object interactions are ubiquitous in interactive computer graphics, 3D object motion simulations, virtual reality and robotics applications. Most collision detection algorithms are based on geometrical object space interference tests. Some algorithms have employed an image space approach to the collision detection problem. We demonstrate an image space collision detection process that allows substantial computational savings during the image space interference test. This approach makes efficient use of the graphics rendering hardware for real time complex object interactions.","PeriodicalId":164343,"journal":{"name":"Proceedings Pacific Graphics '98. Sixth Pacific Conference on Computer Graphics and Applications (Cat. No.98EX208)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124664431","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}
Pub Date : 1998-10-26DOI: 10.1109/PCCGA.1998.731995
N. Sakiyama, K. Miura, T. Takahashi, T. Kaneko, T. Kubo
The paper proposes a generation system of unit quarternion curves and surfaces to design fair curves and surfaces. Curvature and variation of curvature are the primary factors that determine the quality of fair curves and surfaces; however not so many methods have been explored to directly manipulate them, especially in three dimensional space. We use unit quaternion curves in integral forms to specify the tangent of a curve and the first derivative of a surface in one parameter direction. This enables us to control their curvature and variation of curvature more than is possible with traditional parametric representations like Bezier and NURBS curves and surfaces. Using unit quaternion curves balances the efficiency of the design process and the fairness of the designed curves and surfaces. Our system can generate fair curves and surfaces within a short time and their quality is acceptable for industrial applications as well as CG animation.
{"title":"Fair curve and surface design system using tangent control","authors":"N. Sakiyama, K. Miura, T. Takahashi, T. Kaneko, T. Kubo","doi":"10.1109/PCCGA.1998.731995","DOIUrl":"https://doi.org/10.1109/PCCGA.1998.731995","url":null,"abstract":"The paper proposes a generation system of unit quarternion curves and surfaces to design fair curves and surfaces. Curvature and variation of curvature are the primary factors that determine the quality of fair curves and surfaces; however not so many methods have been explored to directly manipulate them, especially in three dimensional space. We use unit quaternion curves in integral forms to specify the tangent of a curve and the first derivative of a surface in one parameter direction. This enables us to control their curvature and variation of curvature more than is possible with traditional parametric representations like Bezier and NURBS curves and surfaces. Using unit quaternion curves balances the efficiency of the design process and the fairness of the designed curves and surfaces. Our system can generate fair curves and surfaces within a short time and their quality is acceptable for industrial applications as well as CG animation.","PeriodicalId":164343,"journal":{"name":"Proceedings Pacific Graphics '98. Sixth Pacific Conference on Computer Graphics and Applications (Cat. No.98EX208)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126580760","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}
Pub Date : 1998-10-26DOI: 10.1109/PCCGA.1998.732124
L. Chang, H. Said
Given a set of points defined over a sphere, we wish to interpolate these points such that the resulting surface possesses C/sup 2/ continuity. The basis of our work is a hybrid interpolant which is a convex combination of three quintic Bezier schemes. This interpolant is of degree 9 over degree 4 and it requires the evaluation of 27 control points.
{"title":"A C/sup 2/ interpolant for spherical scattered data","authors":"L. Chang, H. Said","doi":"10.1109/PCCGA.1998.732124","DOIUrl":"https://doi.org/10.1109/PCCGA.1998.732124","url":null,"abstract":"Given a set of points defined over a sphere, we wish to interpolate these points such that the resulting surface possesses C/sup 2/ continuity. The basis of our work is a hybrid interpolant which is a convex combination of three quintic Bezier schemes. This interpolant is of degree 9 over degree 4 and it requires the evaluation of 27 control points.","PeriodicalId":164343,"journal":{"name":"Proceedings Pacific Graphics '98. Sixth Pacific Conference on Computer Graphics and Applications (Cat. No.98EX208)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126906012","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}
Pub Date : 1998-10-26DOI: 10.1109/PCCGA.1998.732121
K. Qin, Zesheng Tang, Wenping Wang
A new kind of NURBS representation for periodic curves is introduced. The method for periodic curves is extended to derive a compact and symmetric representation of the sphere or the ellipsoid using a piecewise bi-quadratic NURBS surface with only eight distinct control vertices.
{"title":"Representing spheres and ellipsoids using periodic NURBS surfaces with fewer control vertices","authors":"K. Qin, Zesheng Tang, Wenping Wang","doi":"10.1109/PCCGA.1998.732121","DOIUrl":"https://doi.org/10.1109/PCCGA.1998.732121","url":null,"abstract":"A new kind of NURBS representation for periodic curves is introduced. The method for periodic curves is extended to derive a compact and symmetric representation of the sphere or the ellipsoid using a piecewise bi-quadratic NURBS surface with only eight distinct control vertices.","PeriodicalId":164343,"journal":{"name":"Proceedings Pacific Graphics '98. Sixth Pacific Conference on Computer Graphics and Applications (Cat. No.98EX208)","volume":"229 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121713663","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}
Pub Date : 1949-05-01DOI: 10.1632/S0030812900178708
J. Dawson, N. Cooper, D. Leeuw, N. Droitsch, Duesenberry, Marten 340 Estey, E. Feige, N. Feliner
Presents an index of the authors whose papers are published in the conference.
提供在会议上发表论文的作者索引。
{"title":"Index of Authors","authors":"J. Dawson, N. Cooper, D. Leeuw, N. Droitsch, Duesenberry, Marten 340 Estey, E. Feige, N. Feliner","doi":"10.1632/S0030812900178708","DOIUrl":"https://doi.org/10.1632/S0030812900178708","url":null,"abstract":"Presents an index of the authors whose papers are published in the conference.","PeriodicalId":164343,"journal":{"name":"Proceedings Pacific Graphics '98. Sixth Pacific Conference on Computer Graphics and Applications (Cat. No.98EX208)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1949-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121225313","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：