Computer Graphics

Camera and Motion

The aperture and the shutter, and the effects that come from each being finite.

Colour is the family; a dashed line is the second member of it.

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G circle-of-confusion Circle of Confusion thin-lens-model Thin Lens Model circle-of-confusion->thin-lens-model motion-blur Motion Blur pinhole-camera Pinhole Camera motion-blur->pinhole-camera the shutter is open for an interval, not an instant supersampling Supersampling motion-blur->supersampling the extra samples are spread over time instead of area thin-lens-model->pinhole-camera a pinhole holds everything in focus, unlike any real lens

4 nodes

Circle of Confusion

The blur disc a point source projects onto the sensor when it is out of focus. Its diameter is what depth-of-field effects actually compute.

Motion Blur

Integrates the scene over the shutter interval rather than sampling one instant. Removes temporal aliasing for the same reason spatial supersampling…

Pinhole Camera

Every ray passes through a single point, so the projection is a pure perspective divide. The default camera in rendering because it is the one with n…

Thin Lens Model

Gives the camera an aperture of finite size, so only one distance is in focus and everything else spreads. The cheapest model that produces depth of…