edgesmoothing

Edgesmoothing is a technique used in computer graphics and image processing to reduce the jagged or aliased appearance of diagonal and curved lines, often referred to as "jaggies". This aliasing occurs when a continuous line is represented by discrete pixels on a screen or in a digital image. Without edgesmoothing, transitions between colors along these lines can appear harsh and stair-like.

The primary goal of edgesmoothing is to create the illusion of a smoother line by subtly altering the color of pixels along the edge. Instead of a pixel being entirely one color or another, edgesmoothing algorithms allow for intermediate shades. These intermediate shades blend the foreground and background colors, effectively softening the transition and making the line appear less pixelated.

Common methods for achieving edgesmoothing include supersampling and interpolation. Supersampling involves rendering the image at a higher resolution than the display resolution and then downsampling it, which naturally averages out pixel values along edges. Interpolation techniques, such as bilinear or bicubic interpolation, are often used in image scaling and can also be applied to edges to achieve a smoother appearance. Antialiasing is a broader term that encompasses various edgesmoothing techniques.