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What is a Raster Image?

April 26, 2017bitmap digital images DPI image pixels PPI raster RGB signs tustin vector

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What is a Raster Image?

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Raster is more of a photograph, with gradients, soft meshes, textures, etc. Not just spot color shapes as described above (vector art). You could not cut out a raster image out of vinyl. Raster images are usually printed as 4 color process prints.

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Raster images are representations of graphics through points of color, called pixels. These images are usually printed as 4 color process prints and cannot be cut out of vinyl without re-designing or tracing the image on vector-based software.

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Raster is more of a photograph, with gradients, soft meshes, textures, etc. Not just spot color sharp lines. You could not cut out a raster image. Raster can be 1,2,3, or 4 (it almost always prints as 4) colors which makes the entire spectrum (CMYK, RGB, ETC.).

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A raster image, also called a bitmap, is a way to represent digital images. The raster image takes a wide variety of formats, including the familiar .gif, .jpg, and .bmp. A raster image represents an image in a series of bits of information which translate into pixels on the screen. These pixels form points of color which create an overall finished image. When a raster image is created, the image on the screen is converted into pixels. Each pixel is assigned a specific value which determines its color. The raster image system uses the red, green, blue (RGB) color system. An RGB value of 0,0,0 would be black, and the values go all the way through to 256 for each color, allowing the expression of a wide range of color values. In photographs with subtle shading, this can be extremely valuable. When a raster image is viewed, the pixels usually smooth out visually for the user, who sees a photograph or drawing. When blown up, the pixels in a raster image become apparent. While this effect i

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A computer file created and composed of pixels. Unlike a vector image, a resolution of a raster image is constrained by the fixed number of pixels that it contains. Click here for SAMPLE.