HP Scanjet 7450c HP Scanjet 7400C Series Scanner Windows - (English) User Manu - Page 120
HP PrecisionScan Pro software.
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120 An original or output type containing shades of gray, not just black and white. In a grayscale image, each pixel contains multiple bits of information, allowing more shades of gray to be recorded and displayed. Four bits can reproduce up to 16 levels of gray, and eight bits can reproduce 256 shades of gray. Grayscale is commonly used for black-and-white original photographs but is also effective in maintaining shading in pencil drawings. An original composed of a pattern of dots that tricks the eye into seeing shades of gray or color. Halftones are common in all printed materials. Scanning halftones instead of photographic originals can result in lower final image quality. The vertical dimension of a scan as it will appear at its destination. The lightest portion of an image, usually reproduced as white on the computer screen or when printed. A graphical representation of the concentration of pixels at each intensity or gray level in the selection area of the scanned image. Histograms help determine the optimal highlight, shadow, or threshold value of an image. Back to TOC Utility that allows users to use the scanner across the network. The software used to select number of copies, destination printer, and other copy options after a user selects the Copy option on the scanner. The scanning software that HP provides for previewing an image before sending it to a destination; making changes, such as resolution, resizing, and contrast; and saving images as files. The name of the scanner button that starts the HP PrecisionScan Pro software. See also HP PrecisionScan Pro software. An automated feature that sends scanned images directly to a destination on the Web. Links are available only in English. HyperText Markup Language. A language used in creating documents for the World Wide Web. Documents can be saved in HTML format and will have an .htm extension. The distinctive characteristic of a visible color that enables you to distinguish it from other colors. Six hues are especially important in photography, scanning, and printing: red, yellow, green, cyan, blue, and magenta. Hue is determined by the frequency of the wave of light that creates the color. See also saturation.