Illuminant direction
Definition
The 3-D vector pointing from the scene toward the dominant light source. In a single-exposure photograph from a single scene, the illuminant direction should be consistent across all objects. Inconsistency between regions indicates compositing.
Related terms
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- Photometric stereo
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- Shot noise
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Explained in
- Noise Inconsistency and Lighting Analysis for Image ForgeryThe 3-D vector pointing from the scene toward the dominant light source. In a single-exposure photograph from a single scene, the illuminant direction should b...