Zero color and color management terminology
We are a big printing company in Shenzhen China . We offer all book publications, hardcover book printing, papercover book printing, hardcover notebook, sprial book printing, saddle stiching book printing, booklet printing,packaging box, calendars, all kinds of PVC, product brochures, notes, Children's book, stickers, all kinds of special paper color printing products, game cardand so on.
For more information please visit
http://www.joyful-printing.com. ENG only
http://www.joyful-printing.net
http://www.joyful-printing.org
email: info@joyful-printing.net
The following is an introduction to terminology:
Achromaticcolor Achromatic: A color with zero chroma, that is, gray at various levels between black, white, and black and white.
Blackbody: Also known as a complete radiator, it neither reflects nor transmits, but an object that absorbs all of the radiation that falls on it, and completely obeys Planck's law of radiation under the action of radiation.
Blackbodyradiator black body radiation: also known as Plankianradiator. The spectral energy distribution of blackbody radiation varies with temperature; as the temperature increases, the peak wavelength varies with the color of red, clear, yellow, green, and blue.
Brightness: The degree to which the difference in color and shade is different.
Calibration: The process of ensuring that all color production units (scanners, displays, printers) are in compliance with specifications or standard conditions at the time of manufacture by the manufacturer, user or industry.
Characterization: The process of determining the output of a system in response to a known input. The characterization provides a means to obtain the full color gamut and replication characteristics of the device.
Chromaticadaptation color adaptation: The phenomenon that the human eye changes its visual sensing ability with the color and brightness of the environment.
Chromaticitydiagram: A graph that represents chromaticity coordinates on a plane.
Chromaticity: A measure of the intensity of visual perception of the naked eye.
Chroma chroma: referred to as C, to distinguish the degree of color.
CIE (CommissionInternational de I`Eclairage) International Lighting Commission: Research and implementation of international institutions related to light sources and color standards.
CIEL*a*b* International Commission on Illumination Third-degree color space: a mathematical color module based on human visual spectral sensitivity to light, its three-dimensional space L*=lightness, a*=space red-green axis, b *= The blue-yellow axis of the space.
CMM color matching module: Color conversion calculation method that accepts color data and converts it into another color space reference data map.
CMS color management system: short for colormanagementsystem. Writing color expertise and science into software attempts to simplify color reproduction and automate color adjustments, allowing users to easily, quickly and quickly complete color reproduction.
Color (order) system: A method of expressing color space or position using data, coordinates, three-dimensional space, or other means, such as Munsellsystem, PANTONEsystem, Lab, Lxy.
Colorappearancemodel: A mathematical model that describes the change in chromaticity of the human eye.
Colorconstancy color constant: no matter how the conditions of the light source change, the color perception of the object to the object always wants to maintain a certain phenomenon.
Colordifference color difference: color difference ΔEab* in CIEL*A*B* color space, color difference ΔEuv* in CIELUV color space.
Colorgamut color gamut: The range of chromaticity spaces that a color device can display.
Colormatching color matching: adjust the chromaticity intensity between different devices and objects, so that the human eye is consistent in perceptual results.
Colormixingsystem: A system that mixes colors into millions of colors, usually in additive and subtractive colors.
Colorperception color perception: The visual perception of color by the naked eye can be generally divided into two categories, the first category is colorless, which contains white, gray, and black; the second category is color, which contains solid colors and other general colors.
Colorqualityassessment: A method of measuring the quality of a color image based on the visual characteristics of the human eye.
Colorrenderingindex color rendering: the degree to which the light source is rendered to the color of the object, and the degree of color fidelity.
Colorspace: A device that is as important as a three-dimensional color range, mathematically defining chroma and chromaticity that can be printed or displayed.
Colorspectrum color spectrometer: A color measurement system that measures the spectral distribution of objects in the visible range and their chromaticity.
Color temperature: indicates the spectral characteristics of the light source. When the spectral distribution of a light source is the same as the blackbody radiation, the absolute temperature corresponding to the blackbody radiation at this time is called the color temperature of the light source.
Colorimeter: A three-color measuring device used to reflect or transmit light from the surface of an object, converting reflected or transmitted light into a mathematical mode, similar to a human eye. A colorimeter is used to calibrate the characterization of the display and the characterization of the press.
Colorimetricvalues: Three values representing the tristimulus values of the color stimulus characteristics.
Complementarycolor Complementary color: When the additive color method is used, two kinds of colored lights produce white light when mixed in equal amounts, or when the two colors are mixed in equal color to produce black, the two colors are called complementary colors.
Cone pyramidal cells: located in the human eye, can divide the cone cells into red cone cells, green cone cells, blue cone cells; the color of the three primary color theory and its evolution. It only works when it is brighter (more than a few nits), suitable for low-light vision, which has low sensitivity, high resolution and color resolution.
Conversion conversion: Converts a color image from one device's color space to another, also known as color conversion.
Correlatedcolortemperature Relative color temperature: If the spectral distribution of a light source is different from that of blackbody radiation, but its color characteristics are close to the blackbody radiation color temperature of a certain temperature, the color temperature is the relative color temperature.
Delta-E△E: The distance between the two colors of the CIEL*a*b* color space, used to represent the total color difference and establish a quantitative color tolerance, usually in a visually uniform (perceptuallyuniform) chromaticity space. To calculate △E. Densitometer: A device that measures the amount of black and white or four-color light reflected or transmitted through the surface of an object. Reflectance densitometers are used to read the concentration of the four-color ink on the press. Other values such as dot gain, overprint, and chroma errors can be calculated. Transmittance meters are used to read the density of the color separation, black and white, or color film.
Diffuser diffuser: The diffuser can reflect incident light evenly to various angles.
Dotgain dot gain: The percentage (or tonal value) of the actual increase in the total tonal range or the percentage of a particular halftone dot. For example, if the 20% dot gain increases, the 50% midpoint will show 70% dot, and the color tone of the copy will be significantly different from the original.
Errordiffusion error diffusion method: a technique commonly used for image processing, especially color image processing. It is a corresponding processing method for spreading high frequency signals around the surrounding points.
Favoritecolor: The human body's preference for the color of objects, such as blue sky, green grass, green color, higher color contrast.
Fluorescence: The excitation of a shorter wavelength source, which emits a longer wavelength of special light.
Gammacurve tone curve: A function curve between the input value and the output value of a device such as a screen.
GCR (GrayComponentReplacement) gray replacement: This technology can strengthen the fine part of the black version, and make the shadow contrast larger. The method of making the black version of GCR is the technique of replacing the gray part produced by the three colors of CYM with black ink.
HSB: indicates the color mode formed by hue, saturation and brightness.
HSL: indicates the color mode formed by hue, saturation and lightness.
Hue hue: H for short is the characteristic that the main wavelengths of the color are distinguished from each other.