Color recognition

Color recognition principle. For the sake of simplicity, the color space is shown in two dimensions.

Under color detection (also color detection) is a technical process for identifying the color appearance of an illuminated object ( body color ) or a self-luminous object ( light color understood). In contrast to color measurement , the determination of absolute color values ​​is not the focus of color recognition . Rather, it's about a color comparison. The comparison is made by calculating the respective color difference between the current color measurement value and a series of color measurement values ​​stored in the device (reference color values). The stored color with the smallest color difference to the current measured value is the recognized color. The method can be expanded to include a tolerance value. If the current measured value is within the tolerance, the color is considered recognized.
The color number or color name of the color stored in the device is usually output as the result of color recognition. Color detection typically takes place with color sensors .

See also

• Spectroscopy
• Densitometer
• camera

literature

• Ansgar Wego, Gundolf Geske: Correct recognition of colors and surfaces with color sensors . In: Photonics . No. 5 , 2010, ISSN  1432-9778 , p. 38–42 ( PDF [accessed August 31, 2011]).

Web links

• Ansgar Wego, Gundolf Geske: Modern color sensors in industrial automation. (PDF; 972 kB) Wismar University, ASTECH GmbH, accessed on July 14, 2011 . 
• Ansgar Wego, Gundolf Geske: Perceptually appropriate color processing with color sensors. (PDF; 1.7 MB) Hochschule Wismar, ASTECH GmbH, accessed on July 14, 2011 .