IP Library Granted Patent US 8,358,318
Granted Patent B2
US 8,358,318 · App. 12/533,400 · Granted Jan 22, 2013

Method for reproducing an image on an imaging device

Inventor: Christopher J. Edge (St. Paul, MN)
Assignee: Eastman Kodak Company
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,358,318
App. No.
12/533,400
Granted
Jan 22, 2013
Kind
B2
Abstract

A method for reproducing an image on an imaging device, including measuring a set of spectral data for each of a plurality of colors from a set of color device values with a spectral measurement device; determining a first set of tristimulus values corresponding to each set of spectral data; defining a set of human observer color matching functions for each set of tristimulus values; determining a second set of tristimulus values for each set of spectral data using the human observer color matching functions; creating a first map from device-dependent coordinates to device-independent color coordinates; creating a second map from device-independent coordinates to device-dependent color coordinates based on the first map; obtaining image data comprising device-independent color coordinates; converting the image data coordinates into device color coordinates; and reproducing the image on the color device using the device color coordinates.

Claims (12)

1. A method for reproducing an image on an imaging device, the method comprising:

measuring a set of spectral data for each of a plurality of colors generated from a set of color device values with a spectral measurement device controlled by a digital processing system;

calculating a first set of tristimulus values corresponding to each set of spectral data wherein the calculation is based upon color matching functions which were determined by comparing saturated colors;

defining a set of human observer color matching functions for each set of tristimulus values, wherein the human observer color matching functions are functions of the tristimulus values, color matching functions which were determined by comparing saturated colors, and color matching functions which were determined by comparing whites;

determining a second set of tristimulus values for each set of spectral data using the human observer color matching functions corresponding to the first set of tristimulus values;

creating a first map from device-dependent coordinates to device-independent color coordinates derived from the above sets of color device values paired with the associated second set of tristimulus values;

creating a second map from device-independent coordinates to device-dependent color coordinates based on the first map;

obtaining image data comprising device-independent color coordinates;

converting the image data coordinates into device color coordinates via interpolation of the second map; and

reproducing the image on the color device using the device color coordinates.

2. The method of claim 1 , wherein the second set of tristimulus values is converted to a perceptually uniform color space before associating with the reproduced device color coordinate.

3. The method of claim 1 , wherein the tristimulus values are cone values LMS and the color matching functions is cone responses l (λ) m (λ) s (λ).

Assignments (6)
RELEASE OF SECURITY INTEREST Recorded Aug 15, 2023
From: INTELLECTUAL VENTURES FUND 83 LLC
To: MONUMENT PEAK VENTURES, LLC
Reel/Frame 064599/0304 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 9, 2017
From: INTELLECTUAL VENTURES FUND 83 LLC
To: MONUMENT PEAK VENTURES, LLC
Reel/Frame 041941/0079 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 23, 2013
From: EASTMAN KODAK COMPANY
To: INTELLECTUAL VENTURES FUND 83 LLC
Reel/Frame 030269/0001 →
PATENT RELEASE Recorded Feb 1, 2013
From: CITICORP NORTH AMERICA, INC.; WILMINGTON TRUST, NATIONAL ASSOCIATION
To: EASTMAN KODAK COMPANY; EASTMAN KODAK INTERNATIONAL CAPITAL COMPANY, INC.; FAR EAST DEVELOPMENT LTD.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER-PACIFIC MEDIA CORPORATION; KODAK AVIATION LEASING LLC; KODAK PHILIPPINES, LTD.; NPEC INC.; FPC INC.; KODAK IMAGING NETWORK, INC.; PAKON, INC.; QUALEX INC.; CREO MANUFACTURING AMERICA LLC
Reel/Frame 029913/0001 →
SECURITY INTEREST Recorded Feb 21, 2012
From: EASTMAN KODAK COMPANY; PAKON, INC.
To: CITICORP NORTH AMERICA, INC., AS AGENT
Reel/Frame 028201/0420 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 31, 2009
From: EDGE, CHRISTOPHER J.
To: EASTMAN KODAK COMPANY
Reel/Frame 023036/0917 →
Continuity (1)
Related Publication 20110025703A1 · Feb 3, 2011