A device that holds pages and feeds them one after another into a scanner. A matrix of pixels representing an image. Each pixel location has a unique memory location in the computer, allowing efficient localized image processing. A Bitmap image is a representation of a graphic image, displayed by setting individual pixels to white, black, or a color. The resulting compressed file is roughly the same size as a vector file consisting of graphics.
Compression is the process by which image data is reduced to require less storage space.
A measurement of scanner resolution. The number of pixels a scanner can physically distinguish in each vertical and horizontal inch of an original image. Documents are normally scanned at a resolution of between 200 dpi and 400 dpi. The ability of a scanner to scan both sides of a sheet simultaneously. As a result, flatbed scanners provide a more stable target than other scanner designs, but they are generally slower.