What does Anti-Aliasing do in digital graphics?

What does Anti-Aliasing do in digital graphics?

• A. It increases color depth
• B. It smooths jagged edges on curves and diagonals
• C. It locks pixels to a grid
• D. It sharpens all edges

Answer: (B)

Anti-aliasing is about smoothing the jagged edges that appear when curves or diagonal lines are drawn on a grid of square pixels. By softly blending colors at the boundary, it creates intermediate shades that make the edge look curved and continuous rather than stair-stepped. This works because the edge is treated with multiple samples and filtering to reduce the abrupt color transitions, giving the illusion of higher resolution along the boundary. This is the best choice because it directly describes how anti-aliasing improves visual quality of edges. Increasing color depth would add more possible colors but doesn’t automatically smooth the geometry of the edge. Locking pixels to a grid is inherent to raster displays and doesn’t explain the smoothing effect. Sharpening, on the other hand, enhances contrast along edges and would make jagged edges more pronounced rather than softened.

Anti-aliasing is about smoothing the jagged edges that appear when curves or diagonal lines are drawn on a grid of square pixels. By softly blending colors at the boundary, it creates intermediate shades that make the edge look curved and continuous rather than stair-stepped. This works because the edge is treated with multiple samples and filtering to reduce the abrupt color transitions, giving the illusion of higher resolution along the boundary.

This is the best choice because it directly describes how anti-aliasing improves visual quality of edges. Increasing color depth would add more possible colors but doesn’t automatically smooth the geometry of the edge. Locking pixels to a grid is inherent to raster displays and doesn’t explain the smoothing effect. Sharpening, on the other hand, enhances contrast along edges and would make jagged edges more pronounced rather than softened.