Anti-Aliasing

Antialiasing is a method used in computer graphics to eliminate the aliasing effect. The aliasing effect is characterized by the presence of jagged edges or “jaggies” in a rasterized image, which is an image created using pixels. This issue of jagged edges arises from the distortion of an image when scan conversion takes place with sampling at a low frequency, a situation referred to as Undersampling. Aliasing happens when real-world objects, which have smooth and continuous curves, are converted into pixels. The primary reason for anti-aliasing is Undersampling.Undersampling leads to a reduction in the amount of information captured about the image. It occurs when sampling is performed at a frequency that is lower than the Nyquist Sampling Frequency. To prevent this loss of information, our sampling frequency must be at least twice that of the highest frequency present in the object.

‍