Error Diffusion
Error Diffusion is a technique used in digital image processing to improve the quality of images when converting them to lower color depths. Instead of simply rounding pixel values to the nearest available color, this method distributes the quantization error to neighboring pixels. This helps to maintain the overall visual quality of the image, making it appear smoother and more detailed.
One common algorithm for Error Diffusion is the Floyd-Steinberg dithering method. In this approach, the error from a pixel is spread to adjacent pixels in a specific pattern, allowing for a more balanced representation of colors. This technique is widely used in printing and display technologies to enhance image fidelity.