Figuring out the right kind of interpolation for your art can be hard. Luckily, MediBang Pro is here to explain it easily enough.

What is Interpolation?

Interpolation refers to the process of changing the resolution of an image without losing image quality, and MediBang Pro uses interpolation to determine how many pixels an image requires when it’s transformed to a new size or a different shape.

Repeatedly transforming an image is similar to making multiple copies of the same photo- at some point, the edges begin to go a little fuzzy. However, you can improve the results of your Transformation by using certain interpolation settings for your work.

When you open the transformation tool, at the bottom of the screen you will see the automatic interpolation setting, Bicubic (Sharp). Tap on it to reveal three interpolation options.

Nearest Neighbor (Jagged)

Nearest Neighbor interpolation is the simplest kind. When calculating the pixels required during transformation, it only considers one pixel on each side of the edge, which unfortunately can lead to a jagged result for more complex artwork. However, for quick and simple small transformations, it is the easiest, fastest option.

Bilinear (Smooth)

Bilinear interpolation bases its transformation results on a 2 x 2 pixel range surrounding the edge of an image, and averages all four. It may take more processing time than Nearest Neighbor, but the result is smoother, though still medium-quality.

Bicubic (Sharp)

Bicubic interpolation bases its results on an area of 16 surrounding pixels, emphasizing the pixels closer to the edge of the image. As a result, it is the slowest of the three interpolation methods, but has the best high-quality result that maintains the details of the image.