![]() ![]() The input may be a page description in a high-level page description language such as PostScript, Portable Document Format, XPS or another bitmap of higher or lower resolution than the output device. In the latter case, the RIP applies either smoothing or interpolation algorithms to the input bitmap to generate the output bitmap. Raster image processing is the process and the means of turning vector digital information such as a PostScript file into a high-resolution raster image.Įvery image that exists in a digital electronic format is made of picture elements. At some point, all such digital image data, whether expressed as vector format data or bitmap format data, must be rendered into pixels for display on a monitor or for printing on a printer. All images, therefore, have pixels as their base. Rendering, or translating the digital data into physical output, is the most important part of realising such images. The term raster image processing (RIP) refers to the process of translating digital image data into physical visual images and graphics. The software RIP interpretes the page description languages and digital image data and translates the representation into a continuous tone bitmap. It then applies frequency and amplitude modulation precisely controlled by sophisticated mathematical algorithms producing the information that is required for the output device to function properly. When we want to print an advertising poster the best results are achieved incorporating both vector and bitmap graphics. Photographs – lots of colours, fixed/finite size from a digital camera.These files will be bitmaps, probably.tif or.jpg files and large size to achieve the required resolution. ![]() Photos just can’t be easily represented as a vector graphic. Company logo and some simple illustrations that will be small-sized files that will print smoothly at any resolution. ![]() The files use simple, non-photorealistic colours, and we may want to edit them a bit to serve our needs. These files should be bitmaps – probably.
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