Resizing a Photograph

The resizing of a photograph is another commonly used tool today. Re-sampling is similar to resizing but is not as familiar to many.

Let’s take a look at the difference between the two.

Resizing changes the pixels while re-sampling uses an actual algorithm to adjust the picture to appear to not be blurry, fuzzy or blocked. Some of the pixels will be doubled when using resizing to enlarge a picture.With resizing some of the pixels will be removed when reducing an image resulting in some lines of the photo disappearing.

Re-sampling however uses algorithms to determine the new size of the pixels. When re-sampling to a larger size, color will be added as a result of interpolation. When reducing an image through re-sampling, the actual pixels will be re-calculated. A good image editor will have multiple algorithms for resizing and re-sampling options.