�ݺ�ߣshows by User: davidbourguignon

�ݺ�ߣshows by User: davidbourguignon / http://www.slideshare.net/images/logo.gif �ݺ�ߣshows by User: davidbourguignon / Mon, 03 Dec 2012 03:18:39 GMT �ݺ�ߣShare feed for �ݺ�ߣshows by User: davidbourguignon Proposition d'interface pour GreenFox - 3 août 2010 https://fr.slideshare.net/slideshow/proposition-dinterface-pour-greenfox-3-aot-2010/15461984 proposition-interface-greenfox-2010-08-03-121203031839-phpapp02
Proposition d'interface pour GreenFox, extension Firefox de mesure de la consommation d'énergie]]>
Proposition d'interface pour GreenFox, extension Firefox de mesure de la consommation d'énergie]]> Mon, 03 Dec 2012 03:18:39 GMT https://fr.slideshare.net/slideshow/proposition-dinterface-pour-greenfox-3-aot-2010/15461984 davidbourguignon@slideshare.net(davidbourguignon) Proposition d'interface pour GreenFox - 3 août 2010 davidbourguignon Proposition d'interface pour GreenFox, extension Firefox de mesure de la consommation d'énergie <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/proposition-interface-greenfox-2010-08-03-121203031839-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> Proposition d'interface pour GreenFox, extension Firefox de mesure de la consommation d'énergie

from David Bourguignon

]]> 427 2 https://cdn.slidesharecdn.com/ss_thumbnails/proposition-interface-greenfox-2010-08-03-121203031839-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation Blanc http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Great Green Open Web - Drumbeat Paris 2010 /slideshow/great-green-open-web-drumbeat-paris-2010/4665108 drumbeat-ggow-2010-07-01-100702035125-phpapp02
Presentation at Mozilla Drumbeat Paris on 1 July 2010. Check http://www.drumbeat.org/project/great-green-open-web for more!]]>
Presentation at Mozilla Drumbeat Paris on 1 July 2010. Check http://www.drumbeat.org/project/great-green-open-web for more!]]> Fri, 02 Jul 2010 03:51:16 GMT /slideshow/great-green-open-web-drumbeat-paris-2010/4665108 davidbourguignon@slideshare.net(davidbourguignon) Great Green Open Web - Drumbeat Paris 2010 davidbourguignon Presentation at Mozilla Drumbeat Paris on 1 July 2010. Check http://www.drumbeat.org/project/great-green-open-web for more! <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/drumbeat-ggow-2010-07-01-100702035125-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> Presentation at Mozilla Drumbeat Paris on 1 July 2010. Check http://www.drumbeat.org/project/great-green-open-web for more!

Great Green Open Web - Drumbeat Paris 2010 from David Bourguignon

]]> 341 2 https://cdn.slidesharecdn.com/ss_thumbnails/drumbeat-ggow-2010-07-01-100702035125-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Relief: A Modeling By Drawing Tool /slideshow/relief-a-modeling-by-drawing-tool/2710611 relief-a-modeling-by-drawing-tool-091213151515-phpapp01
This paper presents a modeling system which takes advantage of two-dimensional drawing knowledge to design three-dimensional free-form shapes. A set of mouse or tablet strokes is interpreted by the system as defining both a two-dimensional shape boundary and a displacement map. This information is used for pushing or pulling vertices of existing surfaces, or for creating vertices of new surface patches. To relieve the burden of 3D manipulation from the user, patches are automatically positioned in space. The iterative design process alternates a modeling by drawing sequence and a viewpoint change. To stay as close as possible to the traditional drawing experience, the system imposes the minimum number of constraints on the topology of either the strokes set or the resulting surface.]]>
This paper presents a modeling system which takes advantage of two-dimensional drawing knowledge to design three-dimensional free-form shapes. A set of mouse or tablet strokes is interpreted by the system as defining both a two-dimensional shape boundary and a displacement map. This information is used for pushing or pulling vertices of existing surfaces, or for creating vertices of new surface patches. To relieve the burden of 3D manipulation from the user, patches are automatically positioned in space. The iterative design process alternates a modeling by drawing sequence and a viewpoint change. To stay as close as possible to the traditional drawing experience, the system imposes the minimum number of constraints on the topology of either the strokes set or the resulting surface.]]> Sun, 13 Dec 2009 15:13:45 GMT /slideshow/relief-a-modeling-by-drawing-tool/2710611 davidbourguignon@slideshare.net(davidbourguignon) Relief: A Modeling By Drawing Tool davidbourguignon This paper presents a modeling system which takes advantage of two-dimensional drawing knowledge to design three-dimensional free-form shapes. A set of mouse or tablet strokes is interpreted by the system as defining both a two-dimensional shape boundary and a displacement map. This information is used for pushing or pulling vertices of existing surfaces, or for creating vertices of new surface patches. To relieve the burden of 3D manipulation from the user, patches are automatically positioned in space. The iterative design process alternates a modeling by drawing sequence and a viewpoint change. To stay as close as possible to the traditional drawing experience, the system imposes the minimum number of constraints on the topology of either the strokes set or the resulting surface. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/relief-a-modeling-by-drawing-tool-091213151515-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> This paper presents a modeling system which takes advantage of two-dimensional drawing knowledge to design three-dimensional free-form shapes. A set of mouse or tablet strokes is interpreted by the system as defining both a two-dimensional shape boundary and a displacement map. This information is used for pushing or pulling vertices of existing surfaces, or for creating vertices of new surface patches. To relieve the burden of 3D manipulation from the user, patches are automatically positioned in space. The iterative design process alternates a modeling by drawing sequence and a viewpoint change. To stay as close as possible to the traditional drawing experience, the system imposes the minimum number of constraints on the topology of either the strokes set or the resulting surface.

Relief: A Modeling By Drawing Tool from David Bourguignon

]]> 600 5 https://cdn.slidesharecdn.com/ss_thumbnails/relief-a-modeling-by-drawing-tool-091213151515-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Interactive Animation And Modeling By Drawing - Pedagogical Applications In Medicine /slideshow/interactive-animation-and-modeling-by-drawing-pedagogical-applications-in-medicine/2710591 interactive-animation-and-modeling-by-drawing-pedagogical-applications-in-medicine-091213150933-phpapp01
Medicine is a discipline where visualization is an essential component of learning. However, the three-dimensional, dynamic structure of the human body poses difficult teaching challenges. There is a need for truly interactive computer tools that will enable students to create and manipulate computer models, not just watch them. We propose dierent approaches with that goal in mind. We were first interested in interactive physically-based animation of anisotropic elastic materials. One possible application scenario is an anatomy course on heart physiology where students can build interactive samples of cardiac muscular tissue. To achieve this, our model exhibits two key features. The first one is a low computational cost that results in high frame rates; the second one is an intuitive system image that ensures easy control by the user. Next, we were interested in interaction in three dimensions using two-dimensional input, either for annotating existing models, or for creating new models; taking advantage of the fact that drawing practice is still considered a fundamental learning method by some anatomy teachers in the French medical school curriculum. Our 3D drawing system has a stroke representation that enables drawing redisplay when the viewpoint changes. Moreover, this representation can be mixed freely with existing polygonal surfaces for annotation purposes. In contrast, our modeling by drawing tool uses information from both stroke geometry and the drawn image, to allow three-dimensional modeling without explicit depth specification.]]>
Medicine is a discipline where visualization is an essential component of learning. However, the three-dimensional, dynamic structure of the human body poses difficult teaching challenges. There is a need for truly interactive computer tools that will enable students to create and manipulate computer models, not just watch them. We propose dierent approaches with that goal in mind. We were first interested in interactive physically-based animation of anisotropic elastic materials. One possible application scenario is an anatomy course on heart physiology where students can build interactive samples of cardiac muscular tissue. To achieve this, our model exhibits two key features. The first one is a low computational cost that results in high frame rates; the second one is an intuitive system image that ensures easy control by the user. Next, we were interested in interaction in three dimensions using two-dimensional input, either for annotating existing models, or for creating new models; taking advantage of the fact that drawing practice is still considered a fundamental learning method by some anatomy teachers in the French medical school curriculum. Our 3D drawing system has a stroke representation that enables drawing redisplay when the viewpoint changes. Moreover, this representation can be mixed freely with existing polygonal surfaces for annotation purposes. In contrast, our modeling by drawing tool uses information from both stroke geometry and the drawn image, to allow three-dimensional modeling without explicit depth specification.]]> Sun, 13 Dec 2009 15:09:03 GMT /slideshow/interactive-animation-and-modeling-by-drawing-pedagogical-applications-in-medicine/2710591 davidbourguignon@slideshare.net(davidbourguignon) Interactive Animation And Modeling By Drawing - Pedagogical Applications In Medicine davidbourguignon Medicine is a discipline where visualization is an essential component of learning. However, the three-dimensional, dynamic structure of the human body poses difficult teaching challenges. There is a need for truly interactive computer tools that will enable students to create and manipulate computer models, not just watch them. We propose di�erent approaches with that goal in mind. We were first interested in interactive physically-based animation of anisotropic elastic materials. One possible application scenario is an anatomy course on heart physiology where students can build interactive samples of cardiac muscular tissue. To achieve this, our model exhibits two key features. The first one is a low computational cost that results in high frame rates; the second one is an intuitive system image that ensures easy control by the user. Next, we were interested in interaction in three dimensions using two-dimensional input, either for annotating existing models, or for creating new models; taking advantage of the fact that drawing practice is still considered a fundamental learning method by some anatomy teachers in the French medical school curriculum. Our 3D drawing system has a stroke representation that enables drawing redisplay when the viewpoint changes. Moreover, this representation can be mixed freely with existing polygonal surfaces for annotation purposes. In contrast, our modeling by drawing tool uses information from both stroke geometry and the drawn image, to allow three-dimensional modeling without explicit depth specification. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/interactive-animation-and-modeling-by-drawing-pedagogical-applications-in-medicine-091213150933-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> Medicine is a discipline where visualization is an essential component of learning. However, the three-dimensional, dynamic structure of the human body poses difficult teaching challenges. There is a need for truly interactive computer tools that will enable students to create and manipulate computer models, not just watch them. We propose di�erent approaches with that goal in mind. We were first interested in interactive physically-based animation of anisotropic elastic materials. One possible application scenario is an anatomy course on heart physiology where students can build interactive samples of cardiac muscular tissue. To achieve this, our model exhibits two key features. The first one is a low computational cost that results in high frame rates; the second one is an intuitive system image that ensures easy control by the user. Next, we were interested in interaction in three dimensions using two-dimensional input, either for annotating existing models, or for creating new models; taking advantage of the fact that drawing practice is still considered a fundamental learning method by some anatomy teachers in the French medical school curriculum. Our 3D drawing system has a stroke representation that enables drawing redisplay when the viewpoint changes. Moreover, this representation can be mixed freely with existing polygonal surfaces for annotation purposes. In contrast, our modeling by drawing tool uses information from both stroke geometry and the drawn image, to allow three-dimensional modeling without explicit depth specification.

Interactive Animation And Modeling By Drawing - Pedagogical Applications In Medicine from David Bourguignon

]]> 705 3 https://cdn.slidesharecdn.com/ss_thumbnails/interactive-animation-and-modeling-by-drawing-pedagogical-applications-in-medicine-091213150933-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Drawing For Illustration And Annotation In 3D /slideshow/drawing-for-illustration-and-annotation-in-3d/2710545 drawing-for-illustration-and-annotation-in-3d-091213145423-phpapp02
We present a system for sketching in 3D, which strives to preserve the degree of expression, imagination, and simplicity of use achieved by 2D drawing. Our system directly uses user-drawn strokes to infer the sketches representing the same scene from different viewpoints, rather than attempting to reconstruct a 3D model. This is achieved by interpreting strokes as indications of a local surface silhouette or contour. Strokes thus deform and disappear progressively as we move away from the original viewpoint. They may be occluded by objects indicated by other strokes, or, in contrast, be drawn above such objects. The user draws on a plane which can be positioned explicitly or relative to other objects or strokes in the sketch. Our system is interactive, since we use fast algorithms and graphics hardware for rendering. We present applications to education, design, architecture and fashion, where 3D sketches can be used alone or as an annotation of an existing 3D model.]]>
We present a system for sketching in 3D, which strives to preserve the degree of expression, imagination, and simplicity of use achieved by 2D drawing. Our system directly uses user-drawn strokes to infer the sketches representing the same scene from different viewpoints, rather than attempting to reconstruct a 3D model. This is achieved by interpreting strokes as indications of a local surface silhouette or contour. Strokes thus deform and disappear progressively as we move away from the original viewpoint. They may be occluded by objects indicated by other strokes, or, in contrast, be drawn above such objects. The user draws on a plane which can be positioned explicitly or relative to other objects or strokes in the sketch. Our system is interactive, since we use fast algorithms and graphics hardware for rendering. We present applications to education, design, architecture and fashion, where 3D sketches can be used alone or as an annotation of an existing 3D model.]]> Sun, 13 Dec 2009 14:52:09 GMT /slideshow/drawing-for-illustration-and-annotation-in-3d/2710545 davidbourguignon@slideshare.net(davidbourguignon) Drawing For Illustration And Annotation In 3D davidbourguignon We present a system for sketching in 3D, which strives to preserve the degree of expression, imagination, and simplicity of use achieved by 2D drawing. Our system directly uses user-drawn strokes to infer the sketches representing the same scene from different viewpoints, rather than attempting to reconstruct a 3D model. This is achieved by interpreting strokes as indications of a local surface silhouette or contour. Strokes thus deform and disappear progressively as we move away from the original viewpoint. They may be occluded by objects indicated by other strokes, or, in contrast, be drawn above such objects. The user draws on a plane which can be positioned explicitly or relative to other objects or strokes in the sketch. Our system is interactive, since we use fast algorithms and graphics hardware for rendering. We present applications to education, design, architecture and fashion, where 3D sketches can be used alone or as an annotation of an existing 3D model. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/drawing-for-illustration-and-annotation-in-3d-091213145423-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> We present a system for sketching in 3D, which strives to preserve the degree of expression, imagination, and simplicity of use achieved by 2D drawing. Our system directly uses user-drawn strokes to infer the sketches representing the same scene from different viewpoints, rather than attempting to reconstruct a 3D model. This is achieved by interpreting strokes as indications of a local surface silhouette or contour. Strokes thus deform and disappear progressively as we move away from the original viewpoint. They may be occluded by objects indicated by other strokes, or, in contrast, be drawn above such objects. The user draws on a plane which can be positioned explicitly or relative to other objects or strokes in the sketch. Our system is interactive, since we use fast algorithms and graphics hardware for rendering. We present applications to education, design, architecture and fashion, where 3D sketches can be used alone or as an annotation of an existing 3D model.

Drawing For Illustration And Annotation In 3D from David Bourguignon

]]> 922 5 https://cdn.slidesharecdn.com/ss_thumbnails/drawing-for-illustration-and-annotation-in-3d-091213145423-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Controlling Anisotropy In Mass-Spring Systems /slideshow/controlling-anisotropy-in-massspring-systems/2710494 controlling-anisotropy-in-mass-spring-systems-091213144351-phpapp01
This presents a deformable model that offers control of the isotropy or anisotropy of elastic material, independently of the way the object is tiled into volume elements. The new model is as easy to implement and almost as efficient as mass-spring systems, from which it is derived. In addition to controlled anisotropy, it contrasts with those systems in its ability to model constant volume deformations. We illustrate the new model by animating objects tiled with tetrahedral and hexahedral meshes.]]>
This presents a deformable model that offers control of the isotropy or anisotropy of elastic material, independently of the way the object is tiled into volume elements. The new model is as easy to implement and almost as efficient as mass-spring systems, from which it is derived. In addition to controlled anisotropy, it contrasts with those systems in its ability to model constant volume deformations. We illustrate the new model by animating objects tiled with tetrahedral and hexahedral meshes.]]> Sun, 13 Dec 2009 14:43:41 GMT /slideshow/controlling-anisotropy-in-massspring-systems/2710494 davidbourguignon@slideshare.net(davidbourguignon) Controlling Anisotropy In Mass-Spring Systems davidbourguignon This presents a deformable model that offers control of the isotropy or anisotropy of elastic material, independently of the way the object is tiled into volume elements. The new model is as easy to implement and almost as efficient as mass-spring systems, from which it is derived. In addition to controlled anisotropy, it contrasts with those systems in its ability to model constant volume deformations. We illustrate the new model by animating objects tiled with tetrahedral and hexahedral meshes. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/controlling-anisotropy-in-mass-spring-systems-091213144351-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> This presents a deformable model that offers control of the isotropy or anisotropy of elastic material, independently of the way the object is tiled into volume elements. The new model is as easy to implement and almost as efficient as mass-spring systems, from which it is derived. In addition to controlled anisotropy, it contrasts with those systems in its ability to model constant volume deformations. We illustrate the new model by animating objects tiled with tetrahedral and hexahedral meshes.

Controlling Anisotropy In Mass-Spring Systems from David Bourguignon

]]> 709 3 https://cdn.slidesharecdn.com/ss_thumbnails/controlling-anisotropy-in-mass-spring-systems-091213144351-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 https://cdn.slidesharecdn.com/profile-photo-davidbourguignon-48x48.jpg?cb=1614611944 #innovation #sustainability #IT davidbourguignon.net https://cdn.slidesharecdn.com/ss_thumbnails/proposition-interface-greenfox-2010-08-03-121203031839-phpapp02-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/proposition-dinterface-pour-greenfox-3-aot-2010/15461984 Proposition d'interfac... https://cdn.slidesharecdn.com/ss_thumbnails/drumbeat-ggow-2010-07-01-100702035125-phpapp02-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/great-green-open-web-drumbeat-paris-2010/4665108 Great Green Open Web -... https://cdn.slidesharecdn.com/ss_thumbnails/relief-a-modeling-by-drawing-tool-091213151515-phpapp01-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/relief-a-modeling-by-drawing-tool/2710611 Relief: A Modeling By ...