Abstract: A standard light source color matching observation box comprises a box body, the interior space of which forms an observation chamber. The top of the observation chamber is provided with a standard light source comprising a halogen tungsten lamp under which a light filter is provided. The top of the observation chamber is further provided with an LED light. The halogen tungsten lamp emits a light ray through the light filter to be mixed with the light ray of the LED light. The illumination energy provided by a narrow-wave LED light source occupies 20% or less of the total radiation energy. The quality of the compensated light source of the invention is lower than <0.2 A level according to the metamerism index specified by D illuminant of the CIE standard. An object to be measured undergoes a color measurement by the compensated light ray to ensure accuracy of long-time color measurement.

Abstract: An LED lighting based multispectral imaging system for color measurement is provided, including a main control computer and an enclosed type lamp box, where a digital camera is provided at the top of the lamp box, and an LED lamp set control apparatus, a drawer type bearing platform, and an LED lamp set are provided at the bottom of the lamp box. A to-be-measured object is placed on the drawer type bearing platform. The main control computer controls spectral power distribution of the LED lamp set to be in a reciprocal relationship with a spectral sensitivity curve of the digital camera and extracts a camera response and performs calculation, to obtain spectral reflectivity of each pixel of the to-be-measured object.

Abstract: An LED lighting based multispectral imaging system for color measurement is provided, including a main control computer and an enclosed type lamp box, where a digital camera is provided at the top of the lamp box, and an LED lamp set control apparatus, a drawer type bearing platform, and an LED lamp set are provided at the bottom of the lamp box. A to-be-measured object is placed on the drawer type bearing platform. The main control computer controls spectral power distribution of the LED lamp set to be in a reciprocal relationship with a spectral sensitivity curve of the digital camera and extracts a camera response and performs calculation, to obtain spectral reflectivity of each pixel of the to-be-measured object.

Abstract: A standard light source color matching observation box comprises a box body, the interior space of which forms an observation chamber. The top of the observation chamber is provided with a standard light source comprising a halogen tungsten lamp under which a light filter is provided. The top of the observation chamber is further provided with an LED light. The halogen tungsten lamp emits a light ray through the light filter to be mixed with the light ray of the LED light. The illumination energy provided by a narrow-wave LED light source occupies 20% or less of the total radiation energy. The quality of the compensated light source of the invention is lower than <0.2 A level according to the metamerism index specified by D illuminant of the CIE standard. An object to be measured undergoes a color measurement by the compensated light ray to ensure accuracy of long-time color measurement.

Abstract: An apparatus and method for measuring colours of an object includes an enclosure for receiving the object; illumination means for illuminating the object within the enclosure; a digital camera for capturing an image of the object; a computer connected to the digital camera, for processing information relating to the image of the object; and display means for displaying information relating to the image of the object. The enclosure may include means for mounting an object therein such that its position may be altered. These means may include a tiltable table for receiving the object, the tiltable table being controllable by the computer. the illumination means are preferably located within the enclosure, and may include diffusing means for providing a diffuse light throughout the enclosure.