• The term 'ambient occlusion' refers to how bright light shines on various surfaces. AO is depending on the surface's surroundings.
• The calculation is done by projecting rays from the surface in all directions.
• The brightness of the surface is boosted by focussing the background light.
• On the visible hemisphere, points with little geometry will seem light.
• Ambient occlusion is a shading and rendering technique used in 3D computer graphics, modelling, and animation to calculate how exposed each point in a scene is to ambient lighting. Ambient occlusion can be thought of as a determined accessibility value for each surface point.

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