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Outline
• Brief discussion of photometric stereo
• Brief discussion of my “oops”
• Lots of results (from 4 data sets)
Photometric Stereo
• We talked about using 2 images in class
• If you use 3 images, there’s a closed-form solution and you get albedo!
Oops!
• Need to have light sources fairly close together:– Don’t get any data from a surface whose
normal is >90o from the light vector.– 2 of my light sources were ~110o apart...
Results
• The following results are from:– synthetic images of a sphere– real images of a sphere– real images of a ceramic pot– real images of a scene with sphere and pot