Houdini VOP raytracer part 5

Specular Hilight

A specular highlight is a bright spot of light that appears on shiny objects when illuminated. The term specular means that light is perfectly reflected in a mirror-like way from the light source to the viewer. We are going to cover two specular reflection models.

Phong reflection model.

K{\tiny spec} = \big\|R\big\| \big\|V\big\| cos^n \beta =(\hat{R} \cdot \hat{V})^n

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