Aliasing example

The "wagon wheel effect" is a familiar example of aliasing. In this optical illusion, spokes on a wheel appear to rotate at different rates or even backwards depending on the digital frame rate of the video.

1. What is aliasing give an example?
2. Where is aliasing used?
3. What is the meaning of aliasing?
4. What is aliasing and explain its effect?

What is aliasing give an example?

Aliasing: Aliasing refers to the situation where the same memory location can be accessed using different names. For Example, if a function takes two pointers A and B which have the same value, then the name A[0] aliases the name B[0] i.e., we say the pointers A and B alias each other.

Where is aliasing used?

Aliasing can occur in signals sampled in time, for instance digital audio, or the stroboscopic effect, and is referred to as temporal aliasing. It can also occur in spatially sampled signals (e.g. moiré patterns in digital images); this type of aliasing is called spatial aliasing.

What is the meaning of aliasing?

noun. ali·​as·​ing ˈā-lē-ə-siŋ ˈāl-yə- : an error or distortion created in a digital image that usually appears as a jagged outline. We commonly observe aliasing on television.

What is aliasing and explain its effect?

Aliasing is an undesirable effect that is seen in sampled systems. When the input frequency is greater than half the sample frequency, the sampled points do not adequately represent the input signal. Inputs at these higher frequencies are observed at a lower, aliased frequency.