Digital image resizing with the GIMP
Processing digital images is a very common task today. Image processing tools are so common that users often process images by trial and error, without really knowing what they are doing. One of the operations people fail most commonly is resizing an image.
In this article I will explain how to resize images. This is a way for me to celebrate 10 years since I started studying digital image processing!
Fundamentals
There are plenty of digital image formats out there. Each of them provide common or unique features. The most common formats, such as TIFF (Tagged Image File Format), JPEG (Joint Photographic Experts Group), PNG (Portable Network Graphics), are defined raster formats, as they represent the image as a matrix. Each matrix entry is called a pixel (picture element) and represents a color (also called light frequency). These images are commonly known as intensity images.
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