[ronald perry]

I'm a Distinguished Research Scientist at Mitsubishi Electric Research Laboratories (MERL) and a Principal Scientist at 61 Solutions, Inc. My interests include fundamental algorithms in computer graphics with a recent emphasis on new representations of shape and their applications in various diverse domains such as computer-aided design, 2D sketching, digital typography, visualization of molecular conformations, protein folding, and color.

Research - Adaptively Sampled Distance Fields (ADFs)

	Saffron: A New Framework for Representing, Rendering, and Animating Type - Saffron Web Page - Technology Summary - Saffron has been incorporated into Flash - Saffron has been licensed by Monotype
	Proximity Cluster Trees - Journal of Graphics Tools, Vol. 13(1), 2008 (PDF) - Richard Tapia Computing Conference (Poster) - Richard Tapia Computing Conference (Slides)
	An Improved Representation for Stroke-based Fonts - ACM SIGGRAPH 2006 PDF Technical Sketch - ACM SIGGRAPH 2006 PPT Sketch Slides
	Interactive Shape Editing - ACM SIGGRAPH 2006 PDF Course Notes - ACM SIGGRAPH 2006 PPT Course Notes
	Molecular Morphing - American Scientist September 2006 PDF - Molecular Images
	Designing with Distance Fields - Keynote Invited Talk SMI 2005 PDF Abstract - Shape Modeling International 2005 PPT Slides - Shape Modeling International 2005 PDF Slides
	Theory and Applied Computing: Observations and Anecdotes - 29th International Symposium on Mathematical - Foundations of Computer Science 2004 (PDF)
	Simple and Efficient Traversal Methods for Quadtrees and Octrees - Journal of Graphics Tools, Vol. 7(3), 2002 (PDF) - Source code examples (C text file) - U.S. Patent
	Efficient Estimation of 3D Euclidean Distance Fields from 2D Range Images - IEEE/SIGGRAPH Symposium on Volume - Visualization and Graphics 2002 (PDF) - PPT Slides - PDF Slides - U.S. Patent: Distances From Range Images - U.S. Patent: Generating Textured Range Images - U.S. Patent: Editing 3D Models via 2D Images
	Kizamu: A System For Sculpting Digital Characters - ACM SIGGRAPH 2001 PDF Paper - ACM SIGGRAPH 2001 PPT Slides - ACM SIGGRAPH 2001 PDF Slides - U.S. Patent: Distance-based Constraints - U.S. Patent: Selective Regeneration - U.S. Patent: Surface Following - U.S. Patent: Sculpting - U.S. Patent: Control Point Editing - U.S. Patent: Correcting the Distance Field - U.S. Patent: ADF Conversion to Triangles - U.S. Patent: Tiled Generation
	New Directions in Shape Representations - ACM SIGGRAPH 2001 PPT Course Notes - ACM SIGGRAPH 2001 PDF Course Notes
	A Computationally Efficient Framework for Modeling Soft Body Impact - ACM SIGGRAPH 2001 PDF Technical Sketch - ACM SIGGRAPH 2001 PPT Sketch Slides - ACM SIGGRAPH 2001 PDF Sketch Slides - U.S. Patent: Modeling the Interaction of Objects
	Computing 3D Geometry Directly from Range Images - ACM SIGGRAPH 2001 PDF Technical Sketch - ACM SIGGRAPH 2001 PPT Sketch Slides - ACM SIGGRAPH 2001 PDF Sketch Slides - U.S. Patent: Distance Maps from Range Images - U.S. Patent: Shape from Range Images - U.S. Patent: Range Data To 3D Models - U.S. Patent: Single Lens 3D Camera
	Dynamic Meshing Using Adaptively Sampled Distance Fields - ACM SIGGRAPH 2001 PDF Technical Sketch - ACM SIGGRAPH 2001 PPT Sketch Slides - ACM SIGGRAPH 2001 PDF Sketch Slides - U.S. Patent: View Dependent Rendering - U.S. Patent: Detail Directed Visibility Elements - U.S. Patent: Level-of-detail Modeling with ADFs - U.S. Patent: Combining Multiple ADFs
	A New Framework For Non-Photorealistic Rendering - MERL 2001 PDF Technical Report
	A New Representation for Device Color Gamuts - MERL 2001 PDF Technical Report
	NOVA Documentary - "The Search for a Safe Cigarette" - NOVA Web Site - An example nicotine ADF molecule (1) - An example nicotine ADF molecule (2)
	Adaptively Sampled Distance Fields: A General Representation of Shape for Computer Graphics - ACM SIGGRAPH 2000 PDF Paper - ACM SIGGRAPH 2000 PPT Slides - ACM SIGGRAPH 2000 PDF Slides - U.S. Patent: Base - U.S. Patent: Sculpting - U.S. Patent: Color Gamut
	SIGGRAPH Art Gallery Submission - Artist Statement - Snapshot of the piece - Artifact 1 - Artifact 2 - Artifact 3 - Artifact 4
	Miscellaneous Talks on ADFs - Short PPT Presentation 2/14/2002 - Short PDF Presentation 2/14/2002 - Long PPT Presentation 2/28/2002 - Long PDF Presentation 2/28/2002
	Gallery of ADF Models - "The Lord of the Rings" Concept Models - Volumetric Renderings - Machine Parts - Miscellaneous Models

Research - Rendering and Interaction

	Shadermaps: A Method For Accelerating Procedural Shading - ACM SIGGRAPH 2001 PDF Technical Sketch - U.S. Patent: Shadermaps - U.S. Patent: Generalization of Shadermaps
	Antialiasing with Line Samples - Rendering Workshop 2000 PDF Paper - Rendering Workshop 2000 PPT Slides - Rendering Workshop 2000 PDF Slides - U.S. Patent
	Feline: Fast Elliptical Lines for Anisotropic Texture Mapping - ACM SIGGRAPH 1999 PDF Paper - ACM SIGGRAPH 1999 PPT Slides - ACM SIGGRAPH 1999 PDF Slides - U.S. Patent
	Game Playing with Individual Anonymous Laser Pointers - SIGGRAPH Electronic Theater Proposal - U.S. Patent