Mostly the printers and display devices are raster devices. Now we will discuss the conversions of raster image and vector image briefly. Its file extensions could be in:SVG, EPS, PDF, AI, DXF.įrom the above discussion, you have got an idea about vector and raster graphics. So, as a result much smaller file is obtained. Its file is created and saved as a sequence of vector statements.Ī bit in the file for each bit of line drawing we use commands which describe a series of points to be connected. A vector is something that has a magnitude and direction. The Vector graphics are best for printing since it prints crisply even when they are enlarged. The programs which place lines or shapes in a 2-D or 3-D environment sequentially are referred to as Vector Graphics. Its file extensions could be in:BMP, TIF, GIF, JPG. Hence for images that need to scale it to different sizes, we should use vector graphics. Scaling down these images could be easy but enlarging a bitmap makes it pixelated or blurred. Formats like jpeg and gif are commonly compressed. We can use algorithms that compress images to reduce file sizes. For example, the image of 640 x 480 requires information to be stored for 307,200 pixels, while a 3072 x 2048 image needs to store information for a whopping 6,291,456 pixels. So, the large file needs a large bitmap and the larger image requires more disk space to store. The Raster images use bitmaps to store information and display content. While pixmap is used for images with multiple bits per pixel. Sometimes the term bitmap implies one bit per pixel. The more general term is pixmap which refers to a map of pixels, where each one may store more than two colors and you can use more than one bit per pixel. It is also called a bit-array or bitmap index. The bitmap image is actually a grid made of rows and columns where specific cells with given value fill it in or leave it blank. A bitmap is a type of file that displays small dots in a pattern that creates an overall image. 2: Bitmap (BMP):Ī bitmap is also an image file format. Most people prefer to look at smooth and clear images rather than pixelated one. You cannot see the individual pixel without zooming it, because they are so small. The display screen is divided into a matrix of thousands or millions of pixels. Those are the small little dots that make the image to display on the computer, whether they are flat-screen (LCD) or tube (CRT) monitors. Pixel is actually a short form of “Picture Element”. Well, before we start to know about vector and raster graphics, we must understand a few basic terms of display graphics: 1: Pixel:Ī pixel is the smallest element of a picture which represents on your screen.
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