Resize Algorithms

From the Fusion Help Manual www.eyeonline.com

• Nearest Neighbor

This skips or duplicates pixels as needed. This produces the fastest but crudest results.

• Box

This is a simple interpolation scale of the image.

• Bi-Linear

This uses a simplistic filter, which produces relatively clean and fast results.

• Bi-Cubic

This filter produces a nominal result. It offers a good compromise between speed and quality.

• B-Spline

This produces better results with continuous tone images but is slower than Bi-Cubic?. If the images have fine detail in them, the results may be blurrier than desired.

• Catmull-Rom

This produces good results with continuous tone images which are scaled down, producing sharp results with finely detailed images.

• Gaussian

This is very similar in speed and quality to Bi-Cubic?.

• Mitchell

This is similar to Catmull-Rom? but produces better results with finely detailed images. It is slower than Catmull-Rom?.

• Lanczos

This is very similar to Mitchell and Catmull-Rom? but is a little cleaner and also slower.

• Sinc

This is an advanced filter that produces very sharp, detailed results, however, it may produce visible `ringing' in some situations.

• Bessel

This is similar to the Sinc filter but may be slightly faster.
Note Most of the Scale tool's filters are useful only when making an image larger. When shrinking images, it is common to use the Bi-Linear? filter, however, the Catmull-Rom? filter will apply some sharpening to the results, and may be useful for preserving detail when scaling down an image.
Because this tool changes the physical resolution of the image, we do not normally advise animating the controls. written by Eyeon (2005)