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Color management is necessary because different devices have different color capabilities and characteristics. For example, a monitor may display colors differently than a printer can reproduce them. Without color management, the same image may appear differently on different devices, leading to inconsistencies and inaccuracies.
The most common form of calibration aims at adjusting cameras, scanners, monitors, and printers for photographic reproduction. The aim is that a printed copy of a photograph appears identical in saturation and dynamic range to the original or a source file on a computer display. This means that three independent calibrations need to be performed:
Test cards typically contain a set of patterns to enable television cameras and receivers to be adjusted to show the picture correctly (see SMPTE color bars).Most modern test cards include a set of calibrated color bars which will produce a characteristic pattern of "dot landings" on a vectorscope, allowing chroma and tint to be precisely adjusted between generations of videotape or network feeds.
New monitor configuration APIs make it possible to adjust the monitor's display area, save and restore display settings, calibrate color and use vendor-specific monitor features. Overall too, Windows Vista is designed to be more resolution-independent than its predecessors, with a particular focus on higher resolutions and high DPI displays.
A good monitor with proper calibration shows the six numbers on the right in both bars, a cheap monitor shows only four numbers. Given a desired display-system gamma, if the observer sees the same brightness in the checkered part and in the homogeneous part of every colored area, then the gamma correction is approximately correct.
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DDU is used to pre-configure a print driver for deployment. When the package is run on the client computer, the new configuration file configures the printer driver after it is installed, and does not interfere with WHQL certification. DDU contains the standalone DCU utility inside the package and is launched when Pre-configure driver is ...
A computer monitor mixes shades of red, green, and blue light to create color images. A CMYK printer instead uses light-absorbing cyan, magenta, and yellow inks, whose colors are mixed using dithering, halftoning, or some other optical technique. [10]
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