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Araster graphics editor (also calledbitmap graphics editor) is acomputer program that allows users tocreate andedit images interactively on the computer screen and save them in one of manyraster graphicsfile formats (also known asbitmap images) such asJPEG,PNG, andGIF.
Vector graphics editors are often contrasted with raster graphics editors, yet their capabilities complement each other. The technical difference between vector and raster editors stem from the difference between vector and raster images.Vector graphics are created mathematically, usinggeometricformulas. Each element is created and manipulated numerically; essentially usingCartesian coordinates for the placement of key points, and then a mathematical algorithm to connect the dots and define the colors.[1]
Raster images includedigital photos. A raster image is made up of rows and columns of dots, calledpixels,[2][3] and is generally morephoto-realistic. This is the standard form fordigital cameras; whether it be a.raw file or.jpg file, the concept is the same. The image is represented pixel by pixel, like tiny squares in a grid.[4]
Vector editors tend to be better suited forgraphic design,page layout,typography,logos, sharp-edged artisticillustrations,e.g.,cartoons, clip art, complex geometric patterns,technical illustrations,diagramming andflowcharting.
Advanced raster editors, likeGIMP andAdobe Photoshop, use vector methods (mathematics) for general layout and elements such as text, but are equipped to deal with raster images down to the pixel and often have special capabilities in doing so, such as brightness/contrast, and even adding "lighting" to a raster image or photograph.
A raster image is an image file defined as a grid of pixels. They're also referred to as bitmaps. Common raster image formats on the Web are JPEG, PNG, GIF, and ICO.
Digital images consist of a grid of square pixels. Each image has a size measured in two dimensions, such as 900 pixels wide by 600 pixels high
Media related toRaster graphics software at Wikimedia Commons
