US 9,437,160 B2Granted

System and method for automatic color matching in a multi display system using sensor feedback control

AssigneeMersive Technologies, Inc.

InventorsChristopher O. Jaynes, Thomson Comer, Stephen B. Webb, Michael Tolliver

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Abstract

A system for automatic color matching of multiple displays in a multi-display system. A sensor observes the output energy of each of the displays in a multi-display system and measures the difference in the color responses for a given input color. This difference is used to derive a modification function that is applied to each display. The displays are modified accordingly, and then the color is displayed again. This process is repeated until the measured values from each of the displays are within a minimum measurement error tolerance, so that the differences in displayed colors observed among the displays are minimized.

Claims9

Dependent claims

A method for automatic color matching of a plurality of displays in a multi-display system comprising:

(a) receiving a test image on each of the a plurality of displays, wherein the test image comprises pixel color values;
(b) capturing the test image displayed on each of the displays;
(c) measuring a color response profile for each of the displays;
(d) modifying an operating mode vector, comprising the color transfer function for each of the displays, in response to measured error in the color response profile;
wherein the color transfer function is modified for at least one of the displays;
(e) applying the modified operating mode vector to the displays;
wherein the operating mode vector is modified by a random sample optimization comprising:
(f) modifying display input RGB values;
(g) measuring one or more randomly sampled corresponding output values as observed by a sensor to generate a set of output and observed value pairs;
(h) comparing the observed value to a target value;
(i) computing a correction factor;
and
repeating steps (f) through (i) until the measured color response profile for each of the displays is within a predetermined error tolerance.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/100,986Filed 9 Dec 2013 · continuation in part
Priority: 15 Jul 2010
Published: US 2014/0104304 A117 Apr 2014
Granted: 6 Sep 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

G09G 5/02
Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators: characterised by the way…
G06F 3/1446
Controlling a plurality of local displays, e.g. CRT and flat panel display: display composed of modules, e.g. video walls
G09G 5/12
Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators: synchronisation between…
H04N 1/6055
Matching two or more picture signal generators or two or more picture reproducers: using test pattern analysis

Family

Application61/364,673Us provisional application · filed 15 Jul 2010
Application13/184,282Parent of this continuation-in-part · filed 15 Jul 2011
US 2014/0104304 A1Pre-grant publication · published 17 Apr 2014
US 8,606,004 B2Parent of this continuation-in-part
US 2012/0014593 A1Published application
US 9,437,160 B2This patent

From the US filing history. Foreign family members aren’t listed.

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