indexz.html

João Fradinho Oliveira

[ 126108 polygons

clickhere for a more conventional representation]

x-Research student (passed viva with minor corrections)supervised by:

Prof. Bernard Buxton

Prof. Mel Slater

Research

J.Oliveira, B.Buxton, An Efficient Octree for Interactive Large Model Visualization, June 13, 2005
Tehnical report number RN/05/13, RN0513.pdf (2.3 Mb)

J.Oliveira, D.Zhang, B.Spanlang, B.Buxton, Animating Scanned Human Models, WSCG'2003, Journal of WSCG, Vol.11, No.2., pp 362-369, ISSN 1213-6972, ASHMfinal.zip (1.4 Mb zipped pdf), presentation slides (1.8Mb)

J.Oliveira, A.Steed, Determining orientation of Laser scanned surfaces, SIACG 2002, pp 281-288, 2-5 Julho 2002, Guimarães-Portugal,

OliveiraSteed.pdf

slides

J.Oliveira, B.Buxton, Non-linear simplification of scanned models, in proceedeings of Numérisation3D-SCANNING2002, 24th-25th April 2002, Paris-France, Scanning2002.pdf (7.3Mb)

J.Oliveira, B.Buxton, Fast and memoryless cleaning of 3D models(in preparation journal article)

J.Oliveira, B.Buxton, Light weight Virtual Humans, in proceedings of Eurographics-UK2001,
pp 45-52, London-UK (runner-up to best conference paper prize) FLWVHA4.ps.gz (241K)

J.Oliveira, B.Buxton, Creating light-weight virtual humans for Virtual Environments, Eurographics’99, pp 15-18, Milan-Italy(short article/paper)

OliveiraJF.ps.gz

"Efficiently Representing 3D objects", departmental presentation/tutorial based on structures in Michael Garland's PhD thesis
'Quadric-Based Polygonal Surface Simplification' CMU-CS-99-105, 3Dst.ppt.gz (173K), 3Dst.ppt (668K), bunny model
downloaded/courtesy of Stanford University
keywords: Large models, rapid construction, minimal stored connectivity, low memory, gourard shading from scratch

icosphere.ply ( 24 Mbytes; triangles: 1310720 vertices: 655362)
subdivision of an icosehedron of 20 triangles, 8 times, based on "OpenGL's red book subdivision recipe", the model was cleaned to have just one connected surface, without cracks or duplicated vertices. Apparently there is a patent on constructing spheres, by normalizing inserted position vectors in subdivided tetrahedra/icosahedrons/etc, I guess it makes this model academic.