It is also called a bit array or bitmap index.The more general term pixmap refers to a map of pixels, where each one may store more than two colors, thus using more than one bit per pixel. An image is made up using a collection of pixels referred to as a bitmap.īitmap : In computer graphics, a bitmap is a mapping from some domain (for example, a range of integers) to bits, that is, values which are zero or one. The selfie that you click with your mobile phone is another example of a raster image. A pixel is simply the smallest addressable element of a picture represented on a screen.Ī majority of pictures that we see on our computer screen are raster images. Pixel : In Computer graphics a pixel, dots, or picture element is a physical point in a picture. Before we begin with what vector graphics and raster graphics are, we must understand a few basic terms:
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