Bicubic interpolation

Bicubic interpolation is a method used to resize images smoothly by estimating pixel colors based on the surrounding pixels. It considers not just the nearest neighbors but also their two closest neighbors in both horizontal and vertical directions, fitting a smooth curve that ensures gentle transitions in color and detail. This approach results in higher-quality enlargements or reductions, preserving image clarity and reducing blurriness compared to simpler methods. In essence, bicubic interpolation creates new pixel values by intelligently blending the neighboring pixels, producing a more natural and visually appealing image during size changes.