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Why to use ReLU in lighting module? #24

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xinwen-cs opened this issue Jul 29, 2019 · 0 comments
Open

Why to use ReLU in lighting module? #24

xinwen-cs opened this issue Jul 29, 2019 · 0 comments

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@xinwen-cs
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Hi!
I don't understand this line in lighting.py, why you use relu after calculating the inner product between face normals and light direction.
cos = cf.relu(cf.sum(normals * direction, axis=2))

Hope for answering,
Thanks！
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