| André Gagalowicz |
| Title: Towards a Virtual try-on technology | |
| Abstract: The target of the presented work is to allow a future client to buy a garment directly by INTERNET. He/she will have the possibility to choose the garment, its material and to see himself/herself in 3D, wearing the garment he/she will have not yet bought on a simple PC screen. The presentation will be restricted to the case of Warp/Weft materials. Our target is to produce realistic 3D simulations; it is a necessary condition for their commercial use. Garments have to correspond exactly to the style that a future client will have chosen and the rendering of textile material, which is strongly influenced by its mechanical property, has to be realistic as well. We will first concentrate on the mechanical properties of warp/weft materials and describe Kawabata's results on the characterization of such textile. Kawabata's results are summarized by his famous K.E. S that will also be discussed. The most important outcome of his work is that he proved that textile material has a non linear hysteretic behaviour. It is fundamental to incorporate those properties to a realistic material model. We will first describe the overall technique used to produce a 3D mannequin wearing a specific garment constructed from a set of 2D patterns of the type of the 2D patterns employed to create the real garments. We will then describe the mass/spring model used to model realistically the mechanical behaviour of textile and how it is mapped on each 2D pattern. We will then discuss a technique allowing the automatic prepositioning of the 2D patterns around the body and how these 2D patterns are sewed. We will finally present the procedure used to animate the global mass/spring system in order to produce the garment evolution around the body. The results of the validation of our choice of non linear mass spring system will be shown. Some details will be given regarding collision detection and the response of the system in case of collision as well as regarding our technique implementation. In conclusion, we will discuss the remaining problems and our envisioned extensions. Some videos showing various garment simulations on a numerical mannequin of a real person (obtained by a 3D scanner) will close the presentation. |
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Biography: Dr Andre Gagalowicz is a research director at INRIA, FRANCE. He was the creator of the first laboratory involved in computer vision/computer graphics collaboration techniques in 1984. He graduated from Ecole Supérieure d'Electricité in 1971 (engineer in Electrical Engineering), obtained his PHD in Automatic Control from the University of Paris XI, Orsay, in 1973, and his state doctorate in Mathematics (doctorat d'Etat es Sciences) from the University of Paris VI (1983). He is fluent in english, german, russian and polish and got a bachelor degree in chinese from the University of Paris IX, INALOCO in 1983. His research interests are in 3D approaches for computer vision, computer graphics, and their cooperation and also in digital image processing and pattern recognition. He received the prizes of the best scientific communication and the best technical slide at the Eurographics'85 conference. He was awarded the second prize of the Seymour Cray competition in 1991 and one of his papers (on texture modelling) was selected by the "Computers and Graphics" journal as one of the three best publications of this journal over the last ten years. He took part to the redaction of eight books and wrote around two hundreds publications. He chaired (and was a member of the scientific committee of) many international conferences, the last one being CAIP2005. He was the founder and the last chairman of the MIRAGES international conference. The last version of the MIRAGES conference (MIRAGE'2005) took place at INRIA, FRANCE between the 3rd and 5th of March 2005. This conference is exclusively dedicated to computer vision/computer graphics collaboration techniques which is also his main research field. |
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Email: Andre.Gagalowicz (at) inria.fr |