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Sylvain Paris


Publications by Sylvain Paris (bibliography)

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Wang, Robert, Paris, Sylvain and Popovic;, A Jovan (2011): 6D hands: markerless hand-tracking for computer aided design. In: Proceedings of the 2011 ACM Symposium on User Interface Software and Technology 2011. pp. 549-558. http://dx.doi.org/10.1145/2047196.2047269

Computer Aided Design (CAD) typically involves tasks such as adjusting the camera perspective and assembling pieces in free space that require specifying 6 degrees of freedom (DOF). The standard approach is to factor these DOFs into 2D subspaces that are mapped to the x and y axes of a mouse. This metaphor is inherently modal because one needs to switch between subspaces, and disconnects the input space from the modeling space. In this paper, we propose a bimanual hand tracking system that provides physically-motivated 6-DOF control for 3D assembly. First, we discuss a set of principles that guide the design of our precise, easy-to-use, and comfortable-to-use system. Based on these guidelines, we describe a 3D input metaphor that supports constraint specification classically used in CAD software, is based on only a few simple gestures, lets users rest their elbows on their desk, and works alongside the keyboard and mouse. Our approach uses two consumer-grade webcams to observe the user's hands. We solve the pose estimation problem with efficient queries of a precomputed database that relates hand silhouettes to their 3D configuration. We demonstrate efficient 3D mechanical assembly of several CAD models using our hand-tracking system.

© All rights reserved Wang et al. and/or ACM Press

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Su, Sara L., Paris, Sylvain and Durand, Frdo (2009): QuickSelect: history-based selection expansion. In: Proceedings of the 2009 Conference on Graphics Interface 2009. pp. 215-221. http://doi.acm.org/10.1145/1555880.1555929

When editing a graphical document, it is common to apply a change to multiple items at once, and a variety of tools exist for selecting sets of items. However, directly selecting large sets can sometimes be cumbersome and repetitive. We propose a method for helping users reuse complex selections by expanding the set of currently selected items. We analyze a document's operation history to determine which items have been frequently edited together. When the user requests it, items that have been previously edited with the current selection can be added to it. The new selection can then be manipulated like any other selection. This approach does not require a semantic model of the document or relations between items. Rather, each expansion is based on what the user has done so far to create the document. We demonstrate this approach in the context of vector graphics editing. Results from a pilot study were encouraging. Reusing selections with pre-existing histories, users were more efficient at editing tasks with our QuickSelect tool. Subjective preferences from a usability study in a free drawing context indicate that selection expansion is easy for users to learn and to apply.

© All rights reserved Su et al. and/or their publisher

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