Raytracing

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Characteristics of the Human EyeReceptors have area• They are not points• What would this mean?Receptors are randomly distributed• Not true for cameras, but they do getmore artifacts than we seeCSE 472 Spring 201323That “area” issue…CSE 472 Spring 201324
What we want (to simulate nature)We want the color of a pixel to bethe area-weighted average ofwhat’s under the box for the pixel• How can we do this with rays?CSE 472 Spring 201325General answer to all things ray tracing…CSE 472 Spring 201326
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 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 30 and 31: RayColor with PenumbraCPoisson2D po
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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