Temporal Anti- Aliasing: Aliasing, Sampling (Signal Processing), Wagon- Wheel Effect, Motion Blur, Exposure (Photography)

 
9786131062117: Temporal Anti- Aliasing: Aliasing, Sampling (Signal Processing), Wagon- Wheel Effect, Motion Blur, Exposure (Photography)
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Temporal anti-aliasing seeks to reduce or remove the effects of temporal aliasing, which results from insufficient sampling. A common example of temporal aliasing in film is the appearance of vehicle wheels travelling backwards, the so-called wagon-wheel effect.In computer graphics and special effects, temporal anti-aliasing is usually done by analogy with motion blur on real footage shot using video or film cameras. Moving images are usually sampled (recorded) and played back at 24-60Hz. A single frame will often exhibit streaking because the scene is not usually static for the duration of the exposure. Shorter exposure times give less streaking. In effect, the exposure time of the device allows it to take many more samples and combine these optically to reduce the temporal resolution and hence reduce the information storage requirements.

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