'Computer graphics john c' diaporamas de présentation

Antialiasing

Antialiasing. CS 319 Advanced Topics in Computer Graphics John C. Hart. Aliasing. Aliasing occurs when signals are sampled too infrequently, giving the illusion of a lower frequency signal alias noun (c. 1605) an assumed or additional name f (t) = sin 1.9 ? t Plotted for t ? [1,20]

519 views • 35 slides

Antialiasing

Antialiasing. CS 319 Advanced Topics in Computer Graphics John C. Hart. Aliasing. Aliasing occurs when signals are sampled too infrequently, giving the illusion of a lower frequency signal alias noun (c. 1605) an assumed or additional name f (t) = sin 1.9 ? t Plotted for t ? [1,20]

463 views • 35 slides

Implicit Surfaces

Implicit Surfaces. CS 319 Advanced Topics in Computer Graphics John C. Hart. Implicit Surfaces. f = 0. f < 0. f > 0. Real function f ( x , y , z ) Classifies points in space Image synthesis (sometimes) inside f > 0 outside f < 0 on the surface f = 0

414 views • 21 slides

Implicit Surfaces

Implicit Surfaces. CS 319 Advanced Topics in Computer Graphics John C. Hart. Implicit Surfaces. f = 0. f < 0. f > 0. Real function f ( x , y , z ) Classifies points in space Image synthesis (sometimes) inside f > 0 outside f < 0 on the surface f = 0

438 views • 21 slides

Catmull-Clark Subdivision

333 views • 20 slides

Polygonizing Implicit Surfaces

Polygonizing Implicit Surfaces. CS 319 Advanced Topics in Computer Graphics John C. Hart. Polygonization. Conversion of implicit surface to polygonal mesh Display implicit surface using polygons Real-time approximate visualization method Two steps Partition space into cells

395 views • 18 slides

Photon Mapping

Photon Mapping. CS 319 Advanced Topics in Computer Graphics John C. Hart Featuring images swiped from Henrik Wann Jensen. Refraction of a Caustic. Monte-Carlo ray tracing handles all paths of light: L(D|S)*E, but not equally well

436 views • 14 slides

Photon Mapping

Photon Mapping. CS 319 Advanced Topics in Computer Graphics John C. Hart Featuring images swiped from Henrik Wann Jensen. Refraction of a Caustic. Monte-Carlo ray tracing handles all paths of light: L(D|S)*E, but not equally well

305 views • 14 slides

Real Time Shaders

250 views • 14 slides

Bidirectional Ray Tracing

Bidirectional Ray Tracing. CS 319 Advanced Topics in Computer Graphics John C. Hart. Bidirectional Ray Tracing. Arvo, SIGGRAPH 86 Course Notes LS*DS*E Cast rays from lights into scene Deposit energy on diffuse surfaces LS*D View independent Cast rays from eye into scene

252 views • 11 slides

Global Illumination

253 views • 9 slides

Radiosity

Radiosity. CS 319 Advanced Topics in Computer Graphics John C. Hart. Radiosity Concept. Radiosity of each surface depends on radiosity of all other surfaces Treat global illumination as a linear system Need constant BRDF (diffuse) Solve rendering equation as a matrix problem Process

283 views • 8 slides

Parametric Curves

Parametric Curves. CS 319 Advanced Topics in Computer Graphics John C. Hart. Coordinate Functions. x ( t ). t. Vector function p of one real parameter t 1-D explicit function curve p ( t ) = ( t , x ( t )) 2-D plane curve p ( t ) = ( x ( t ), y ( t )) 3-D space curve

186 views • 8 slides