Abstract:
A color measurement device comprising a means for electronically recording a digital color image, a target holder extending from the recording means having a distal end, and a target at the distal end of the holder, the target having one or more reference color regions thereon.
Abstract:
A method for isolating an element of an image made up of pixels comprising the steps of classifying the pixels into different groups based on the color value of the pixel, blurring the image, locating a pixel in the blurred image that has a predetermined color value corresponding to the element to be isolated, and growing a mask from the located pixel.
Abstract:
A sensor (10) for measuring reflective, transmissive, or self-luminous samples, comprises a plurality of light sources (18), where each of the ligh t sources emit light of a substantially different wavelength band spaced in th e visible spectrum; a reference channel photodetector (20); a sample channel photodectector (22); an optical cap (26) adapted to direct a first portion o f the light emitted by each of the light sources to the reference channel photodetector (20); a reflector cone for directing a second portion of the light emitted by each of the light sources to the sample; and a receptor pie ce (36) for directing the diffuse portion of the light reflected from the sampl e to the sample channel photodetector (22). The sensor (10) is preferably incorporated into a hand-held "mouse" device, which includes an area on its top surface for seating an index finger of the human hand.
Abstract:
A sensor (10) for measuring reflective, transmissive, or self-luminous samples, comprises a plurality of light sources (18), where each of the light sources emit light of a substantially different wavelength band spaced in the visible spectrum; a reference channel photodetector (20); a sample channel photodectector (22); an optical cap (26) adapted to direct a first portion of the light emitted by each of the light sources to the reference channel photodetector (20); a reflector cone for directing a second portion of the light emitted by each of the light sources to the sample; and a receptor piece (36) for directing the diffuse portion of the light reflected from the sample to the sample channel photodetector (22). The sensor (10) is preferably incorporated into a hand-held "mouse" device, which includes an area on its top surface for seating an index finger of the human hand.
Abstract:
A sensor for measuring reflective, transmissive, or self-luminous samples, comprises a plurality of light sources, where each of the light sources emit light of a substantially different wavelength band spaced in the visible spectrum; a reference channel photodetector; a sample channel photodetector; an optical cap adapted to direct a first portion of the light emitted by each of the light sources to the reference channel photodetector, a reflector cone for directing a second portion of the light emitted by each of the light sources to the sample; and a receptor piece for directing the diffuse portion of the light reflected from the sample to the sample channel photodetector. Preferably, the reference channel and sample channel photodetectors are identical devices and are mounted back-to-back to share environmental characteristics, and in turn, minimize the variation between their respective responses. The sensor is preferably incorporated into a hand-held "mouse" device, which includes an area on its top surface for seating an index finger of the human hand. Positioned within this area is a pressure-activated switch that is operatively coupled to the sensor circuitry for performing the various readings. And the sensor is preferably mounted into the mouse device such that the focal aperture of the downward pointing reflector cone is in axial alignment with the pressure-activated switch. Accordingly, a user will be able to use the mouse to "point" with his or her index finger to an area of the sample surface, and will then simply press the switch using the same index finger.
Abstract:
A sensor (10) for measuring reflective, transmissive, or self-luminous samples, comprises a plurality of light sources (18), where each of the light sources emit light of a substantially different wavelength band spaced in the visible spectrum; a reference channel photodetector (20); a sample channel photodectector (22); an optical cap (26) adapted to direct a first portion of the light emitted by each of the light sources to the reference channel photodetector (20); a reflector cone for directing a second portion of the light emitted by each of the light sources to the sample; and a receptor piece (36) for directing the diffuse portion of the light reflected from the sample to the sample channel photodetector (22). The sensor (10) is preferably incorporated into a hand-held 'mouse' device, which includes an area on its top surface for seating an index finger of the human hand.