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Computer-implemented system and method for color sensing, storage and comparison

  • US 10,057,549 B2
  • Filed: 05/01/2015
  • Issued: 08/21/2018
  • Est. Priority Date: 11/02/2012
  • Status: Active Grant
First Claim
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1. A color sensing system comprising:

  • a color sensing device further comprisinga housing having an external perimeter about a length thereof, and a face defining a plane perpendicular to said length,a substrate residing within the housing, oriented in parallel with and offset from the plane defined by the face to define an interior within the perimeter of the housing, the face configured to engage a target surface about the perimeter of the housing wherein ambient light is substantially restricted from entering the interior,a controlled light source and a color sensor mounted to the substrate, wherein the controlled light source comprises a plurality of light-emitting diodes circumferentially disposed about the color sensor and configured to collectively emit light having a common color temperature,a controller configured to control the plurality of light-emitting diodes to be turned off or on across a plurality of lighting power levels in response to an input control signal,the color sensor arranged to receive light radiated by the controlled light source and reflected from the target surface when the face of the color sensing device engages the target surface, the sensor further effective to generate output signals representative of a color of the target surface, anda memory storing a matrix of device-specific calibration values, wherein the controller is further effective to convert output from the color sensor to tristimulus values using a priori estimation with respect to the calibration values;

    a computing device having a display unit and a computer program product residing thereon, the computer program product executable to direct the performance of operations comprisinggenerating a user interface via the display unit enabling a user to select from a plurality of available lighting conditions for the color sensing device,transmitting control signals to the color sensing device corresponding to the selected lighting condition,receiving the output signals from the color sensing device,generating a first image comprising the color represented by said output signals on the display unit of the computing device,enabling a user to select one or more of a plurality of colors stored in a database, andgenerating at least a second image comprising the selected one or more colors alongside the first image.

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