Back to results
US 2002/0159098 A1Published application
Hyperspectral system for capturing graphical images
OwnerLarry Kleimaninventor
Life of this patent
Estimating the term…
Abstract
A graphical image scanner scans pixelated regions of a color image to measure light intensities in a plurality of hyperspectral bandpasses for each pixel. The scanner transforms the hyperspectral bandpass intensities into device-independent color representations for each pixel, using scientific color representations, for example, as defined in CIE-31 and CIE-76 colorimetry standards as devised by the Commission Internatonale de l'Eclairage (CIE).
Claims29
A scanner for creating a master for a graphical image, the scanner comprising:
- a light source to illuminate the graphical image;
- a collector to segment the graphical image into a plurality of pixels and to collect light emanating from the light source and from each of the plurality of pixels;
- a hyperspectral analyzer to divide the light from the source and the collected light from each of the plurality of pixels into a plurality of hyperspectral bandpasses, and to measure a light intensity for each of the plurality of hyperspectral bandpasses, wherein the plurality of hyperspectral bandpasses define a continuous spectrum characterized by wavelengths ranging between 360 and 830 nanometers, and wherein the divided light in each hyperspectral bandpass is characterized by a substantially unique and non-overlapping selection of continuous wavelengths from the spectrum;
- a calculator to transform the measured light intensities for the plurality of hyperspectral bandpasses of the source and the plurality of pixels into a device-independent representation of color;
- a processor with stored program control for formatting the device-independent representations for the plurality of pixels as a digital data file;
- and
- a memory for storing the formatted digital data file.
4 more elements
A method for creating a master of a graphical image in a device-independent form, the method comprising the steps of:
- illuminating the graphical image with a light source;
- segmenting the graphical image into a plurality of pixels;
- collecting light emanating from each of the plurality of pixels and from the source;
- dividing the collected light into a plurality of hyperspectral bandpasses for each of the source and the plurality of pixels, wherein the plurality of hyperspectral bandpasses define a spectrum characterized by wavelengths ranging continuously between 360 and 830 nanometers, and wherein the divided light in each hyperspectral bandpass is characterized by a substantially unique and non-overlapping selection of continuous wavelengths from the spectrum;
- measuring a light intensity for each of the plurality of hyperspectral bandpasses;
- transforming the measured light intensities for the plurality of spectral bandpasses into a device-independent representation of color;
- formatting the device-independent representations for the plurality of pixels as a digital data file;
- and
- storing the formatted digital data file.
6 more elements
Dependencies are inferred from the claim text.