Windows: Color Calibration

 

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Relevant Background: "The aim of color calibration is to measure and/or adjust the color response of a device (input or output) to a known state. In International Color Consortium (ICC) terms, this is the basis for an additional color characterization of the device and later profiling.[1] In non-ICC workflows, calibration refers sometimes to establishing a known relationship to a standard color space[2] in one go. The device that is to be calibrated is sometimes known as a calibration source; the color space that serves as a standard is sometimes known as a calibration target.[citation needed] Color calibration is a requirement for all devices taking an active part of a color-managed workflow, and is used by many industries, such as television production, gaming, photography, engineering, chemistry, medicine and more...Input data can come from device sources like digital cameras, image scanners or any other measuring devices. Those inputs can be either monochrome (in which case only the response curve needs to be calibrated, though in a few select cases one must also specify the color or spectral power distribution that that single channel corresponds to) or specified in multidimensional color - most commonly in the three channel red-green-blue model. Input data is in most cases calibrated against a profile connection space (PCS)...One of the most important factors to consider when dealing with color calibration is having a valid source. If the color measuring source does not match the displays capabilities, the calibration will be ineffective and give false readings.The main distorting factors on the input stage stem from the amplitude nonlinearity of the channel responses, and in the case of a multidimensional datastream the non-ideal wavelength responses of the individual color separation filters, most commonly a color filter array, in combination with the spectral power distribution of the scene illumination...After this the data is often circulated in the system translated into a working space RGB for viewing and editing...Color perception is subject to ambient light levels, and the ambient white point; for example, a red object looks black in blue light. It is therefore not possible to achieve calibration that will make a device look correct and consistent in all capture or viewing conditions. The computer display and calibration target will have to be considered in controlled, predefined lighting conditions...he 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 appear 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:
  • The camera or scanner needs a device-specific calibration to represent the original's estimated colors in an unambiguous way.
  • The computer display needs a device-specific calibration to reproduce the colors of the image color space.
  • The printer needs a device-specific calibration to reproduce the colors of the image color space.

These goals can either be realized via direct value translation from source to target, or by using a common known reference color space as middle ground. In the most commonly used color profile system, ICC, this is known as the PCS or "Profile Connection Space"...For calibrating the monitor a colorimeter is attached flat to the display's surface, shielded from all ambient light. The calibration software sends a series of color signals to the display and compares the values that were actually sent against the readings from the calibration device. This establishes the current offsets in color display. Depending on the calibration software and type of monitor used, the software either creates a correction matrix (i.e. an ICC profile) for color values before being sent to the display, or gives instructions for altering the display's brightness/contrast and RGB values through the OSD. This tunes the display to reproduce fairly accurately the in-gamut part of a desired color space. The calibration target for this kind of calibration is that of print stock paper illuminated by D65 light at 120 cd/m2..." ("Color Calibration", https://en.wikipedia.org/wiki/Color_calibration#:~:text=The%20aim%20of%20color%20calibration,the%20device%20and%20later%20profiling)

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Relevant Insurance Coverage for Gaming, Office & Gaming Equipment :

a) Personal Property Coverage that covers all electronics from perils like theft

c) Commercial equipment coverage that covers computers, photo copiers and other electronics

b) Business equipment and Data Coverage

e) Errors and Omission Coverage

d) Auto Insurance: OPCF 38 - Agreed limit for automobile Electronic Accessories and Equipment

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Location: North America

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