CMPT 165 Chapter Notes - Chapter 5: Gimp, Unisys, Dither
9 Apr 2015
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Document Summary
Image is stored as a grid of small squares or pixels. Each pixel in the grid is assigned a colour. If the pixels are small enough, the image will closely resemble the intended image. Bitmap graphics programs: photoshop, photo-paint, paint shop pro, gimp, and graphic. Stores a description of the image, using various shapes like circles, lines, curves, etc. For example, a vector image could contain the information a green line from here to here, a red filled circle with centre here and with this radius . Since bitmap images are just a grid of pixels, they can"t be easily scaled up. When rotating an image or doing other manipulations, the situation is the same. With a bitmap image, the program can only work with the pixels in the image, and there is often some distortion in the final image. Vector images can generally be modified more smoothly, resulting in a cleaner image.
