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The stroboscopic effect is a visual phenomenon caused by aliasing that occurs ... Design of lighting equipment to reduce the TLMs of the light sources is typically a ...
Temporal light artefacts (TLAs) are undesired effects in the visual perception of a human observer induced by temporal light modulations. Two well-known examples of such unwanted effects are flicker and stroboscopic effect. Flicker is a directly visible light modulation at relatively low frequencies (< 80 Hz) and small intensity modulation levels.
Aliasing can occur in signals sampled in time, for instance in digital audio or the stroboscopic effect, and is referred to as temporal aliasing. Aliasing in spatially sampled signals (e.g., moiré patterns in digital images) is referred to as spatial aliasing.
Stroboscopic effects are caused by aliasing that occurs when continuous rotational or other cyclic motion is represented by a series of short or instantaneous samples (as opposed to a continuous view) at a sampling rate close to the period of the motion. Rotating objects can appear counter-rotating, stationary, or rotating under a strobe light.
The stroboscopic effect refers to the phenomenon that occurs when there is a change in perception of motion, caused by a light stimulus that is seen by a static observer within a dynamic environment. The stroboscopic effect will typically occur within a frequency range between 80 and 2000 Hz, [ 19 ] though can go well beyond to 10,000 Hz for a ...
In these recorded media, the effect is a result of temporal aliasing. [1] It can also commonly be seen when a rotating wheel is illuminated by flickering light. These forms of the effect are known as stroboscopic effects: the original smooth rotation of the wheel is visible only intermittently. A version of the wagon-wheel effect can also be ...
However, one can directly see that two rotators with same initial angular position but shifted dimensionless momentum and + (with an arbitrary integer) will have the same exact stroboscopic dynamics, but with dimensionless momentum shifted at any time by (this is why stroboscopic phase portraits of the kicked rotator are usually displayed in a ...
The "beat effect" problem created when shooting photos under standard fluorescent lighting. A stroboscopic effect can be noticed, where something spinning at just the right speed may appear stationary if illuminated solely by a single fluorescent lamp. This effect is eliminated by paired lamps operating on a lead-lag ballast.