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Stairstep interpolation

Method for interpolating the pixels after enlarging an image

Stairstep interpolation

Method for interpolating the pixels after enlarging an image

In the field of image processing, stairstep interpolation is a widely employed method technique for interpolating pixels after enlarging an image. The fundamental concept is to interpolate multiple times, in small increments, using any interpolation algorithm that is better than nearest-neighbor interpolation such as; bilinear interpolation, and bicubic interpolation. A common scenario is to interpolate an image by using a bicubic interpolation which increases the image size by no more than 10% (110% of the original size) at a time until the desired size is reached.

Fred Miranda, a developer, popularized this method by creating and developing several Photoshop plug-ins that incorporate this technique.

Example

A comparison of stairstep and direct bilinear image scaling, using multiple 10% steps versus one 100% step

References

References

  1. (July 2006). "The Best of Professional Digital Photography". Amherst Media.
  2. (4 October 2005). "Upsample Your Images".
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This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

image-processing
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