The Size of Digital Imaging: Resolution
Now you have an understanding of the pixel building blocks that make up raster images as well as what the difference is between a raster image that is 2D and pixel based, and a vector image that is 2D (or 3D), and vertex and line (or curve) based. In this chapter, we build on these concepts by looking at the x and y dimensions of digital image compositing. Since you now have GIMP downloaded onto your computer, I will illustrate concepts in the book using both Photoshop and GIMP, as those are the most widely used digital image packages.
Whereas a single pixel is just one point in space, which is ...