Imaging device calibration methods, imaging device calibration instruments, imaging devices, and articles of manufacture

• US 8,705,151 B2
• Filed: 04/05/2004
• Issued: 04/22/2014
• Est. Priority Date: 04/05/2004
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: DiCarlo, Jeffrey M.
• Primary Examiner(s): Poon, King
• Assistant Examiner(s): Cruz, Iriana
• Application Number:
  US10/818,622
• Publication Number:
  US 20050219364A1
• Time in Patent Office: 3,669 Days
• Field of Search: 358/509, 358/1.1, 358/1.9, 358/1.15, 358504-505, 348/188, 348/187, 348/E17.002, 348/180
• US Class Current: 358/504
• CPC Class Codes: H04N 1/401 Compensating positionally unequal response of the pick-up or reproducing head H04N1/403 takes precedence
• CPC Class Codes: H04N 1/484 with sequential colour illumination of the original
• CPC Class Codes: H04N 17/002 for television cameras

Abstract

Imaging device calibration methods, imaging device calibration instruments, imaging devices, and articles of manufacture are described. According to one embodiment, an imaging device calibration method includes emitting light for use in calibration of an imaging device, providing an emission characteristic of the light, sensing the light using an image sensor of the imaging device, generating sensor data indicative of the sensing using the image sensor, and determining at least one optical characteristic of the imaging device using the generated sensor data and the emission characteristic for use in calibration of the imaging device, and wherein the at least one optical characteristic corresponds to the image device used to sense the light.

Claims

1. An imaging device calibration method comprising:

emitting light for use in calibration of an imaging device;

providing an emission characteristic of the light;

sensing the light using an image sensor of the imaging device;

generating sensor data indicative of the sensing using the image sensor; and

determining at least one optical characteristic of the imaging device using the generated sensor data and the emission characteristic for use in calibration of the imaging device, and wherein the at least one optical characteristic corresponds to the image device used to sense the light, wherein the determining comprises determining the at least one optical characteristic comprising responsivity.

2. An imaging device calibration method comprising:

emitting light for use in calibration of an imaging device;

providing an emission characteristic of the light;

sensing the light using an image sensor of the imaging device;

generating sensor data indicative of the sensing using the image sensor; and

determining at least one optical characteristic of the imaging device using the generated sensor data and the emission characteristic for use in calibration of the imaging device, and wherein the at least one optical characteristic corresponds to the image device used to sense the light, wherein the determining comprises determining the at least one optical characteristic comprising transduction.

3. An imaging device calibration method comprising:

emitting light for use in calibration of an imaging device;

providing an emission characteristic of the light;

sensing the light using an image sensor of the imaging device;

generating sensor data indicative of the sensing using the image sensor; and

determining at least one optical characteristic of the imaging device using the generated sensor data and the emission characteristic for use in calibration of the imaging device, and wherein the at least one optical characteristic corresponds to the image device used to sense the light, wherein the determining comprises determining the at least one optical characteristic comprising information derived from at least one of a responsivity function and a transduction function.

4. An imaging device calibration method comprising:

emitting light for use in calibration of an imaging device;

providing an emission characteristic of the light;

sensing the light using an image sensor of the imaging device;

generating sensor data indicative of the sensing using the image sensor; and

determining at least one optical characteristic of the imaging device using the generated sensor data and the emission characteristic for use in calibration of the imaging device, and wherein the at least one optical characteristic corresponds to the image device used to sense the light, wherein the emitting the light comprises simultaneously emitting different light using a plurality of light emitting devices, and the determining comprises determining the at least one optical characteristic comprising responsivity and transduction using the simultaneously emitted light.