Specular highlight
Definition
A bright spot where a light source reflects directly off a shiny surface toward the camera. The position and shape of specular highlights encode the illuminant direction and the surface normal, and can be used to infer the light source position independently for each object.
Related terms
- Illuminant direction
- The 3-D vector pointing from the scene toward the dominant light source. In a single-exposure photograph from a single scene, the illuminant...
- Noise variance map
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- Photo Response Non-Uniformity (PRNU)
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- Photometric stereo
- A technique that recovers surface normals and illuminant direction from shading patterns. When applied to a single image, it uses local shading...
- Shot noise
- Random noise proportional to the square root of the number of photons captured. Shot noise is scene-dependent and cannot be predicted from...
Explained in
- Noise Inconsistency and Lighting Analysis for Image ForgeryA bright spot where a light source reflects directly off a shiny surface toward the camera. The position and shape of specular highlights encode the illuminant...