Which method improves image processing efficiency in digital displays?

Progressive scanning is the method that enhances image processing efficiency in digital displays. In progressive scanning, each frame of video is drawn sequentially, line by line, from the top to the bottom. This approach ensures that the display renders a complete image progressively in one go rather than relying on alternating lines, which is characteristic of interlacing.

As a result, progressive scanning offers smoother motion and reduces flicker, which can occur with interlaced images. By processing the entire frame at once, it optimizes the viewing experience, especially during fast-moving visuals, thus making it a preferred technique in modern digital displays. This method is particularly important for high-definition formats, where clarity and fluidity are key.

While the other methods presented may have their own benefits, they do not enhance image processing efficiency in the same way. For instance, interlacing can lead to visual artifacts and a decrease in image quality during motion, while chroma subsampling focuses on reducing the amount of color data rather than improving processing efficiency directly. Pixel mapping, although useful for ensuring precise display alignment, does not inherently improve the efficiency of image processing like progressive scanning does.