Anti-Aliasing in Computer Graphics

Anti-Aliasing is a typical image quality problem on all pixel devices including computer screens. Aliasing is the stair-step effect or jaggies on the edges of objects displayed on Computer Screen – all diagonal and curved lines are displayed as a series of little zigzag horizontal and vertical lines and it can be distracting for the PC users.
Anti-Aliasing is a potential problem whenever an analog signal is a point sampled to convert it into a digital signal. It can also occur in audio sampling.