Raytracing

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RayColor with PenumbraCPoisson2D poissonPoisson.SetMinDistance( sqrt(lightarea) / (2 * sqrt(antialiascnt) )color = ambient lightforeach lightfor p=1 to penumbraCntPP = random point on surface of light (Poisson distribution)L = PP – intersectif shadowfeeler doesn’t hit anythingcolor += contribution from this light / penumbraCntcolor += any reflectionscolor += any transmissionreturn colorCSE 472 Spring 20135916x Antialiasing, 8x penumbra, 1 level of recursionCSE 472 Spring 201360
Stats for that imageKd Tree Nodes: 31399Tree Depth: 39Intersection Tests: 112,276,007Polygon Tests: 476,466,446Average polygon tests per IT: 4.24371CSE 472 Spring 201361Depth of FieldWhat causes depth of field in a cameraor your eye?How would youimplement it?CSE 472 Spring 201362
Page 4 and 5: How do we get shadows?What is diffe
Page 6 and 7: Problems w/ numerical precisionCSE
Page 8 and 9: Intersect Functionbool Intersect(co
Page 10 and 11: Aliasing, aka “Jaggies”Why does
Page 12 and 13: Characteristics of the Human EyeRec
Page 14 and 15: Instead of one raythough the center
Page 16 and 17: uniform random numbersFirst idea is
Page 18 and 19: Poisson Distributions10.90.810.90.8
Page 20 and 21: Poisson is French for “Fish”CSE
Page 22 and 23: 4x AntialiasingCSE 472 Spring 20134
Page 24 and 25: Next?CSE 472 Spring 201347Reflectio
Page 26 and 27: Recursion issuesDon’t recurse if
Page 28 and 29: How do we solve this problem?All to
Page 32 and 33: Putting it all togetherWe have thre
Page 34 and 35: Stochastic Ray TracingProblem with
Page 36 and 37: Photon map•Photon by light-based

Raytracing

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