Podcast
Questions and Answers
If a scene is only lit by ambient light, what would be missing?
If a scene is only lit by ambient light, what would be missing?
Defined shadows, Directional lighting
In what situation would using only ambient light be sufficient for rendering a scene?
In what situation would using only ambient light be sufficient for rendering a scene?
When the scene should appear flat, When detail is not important, Silhouettes
What properties of a diffuser lamp make it an area light source?
What properties of a diffuser lamp make it an area light source?
It has a large emitting surface, Light scatters from a wide area
Flashcards
Ambient Light Limitations
Ambient Light Limitations
Absence of defined shadows and directional lighting occurs when a scene is exclusively illuminated by ambient light.
When is Ambient Light sufficient?
When is Ambient Light sufficient?
Ambient light is sufficient when a scene should lack depth, when details aren't important, or when rendering silhouettes.
Diffuser Lamp as Area Light
Diffuser Lamp as Area Light
A diffuser lamp acts as an area light source due to scattering light from a large emitting surface. This leads to soft shadows.
Study Notes
- Light source models include distant point sources, area sources, ambient light, and global illumination models.
Distant Point Source
- Characterized by a single direction of illumination.
- Example: the sun.
Area Source
- Examples include white walls, diffuser lamps, and the sky.
Ambient Light
- Used to approximate inter-reflections.
Global Illumination Model
- Accounts for inter-reflections within a modeled scene.
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