Method of color correcting a sensed image

• US 20030174241A1
• Filed: 12/04/2002
• Published: 09/18/2003
• Est. Priority Date: 07/15/1997
• Status: Abandoned Application

• Current Assignee: Silverbrook Research Pty Limited
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia
• Application Number:
  US10/309,186
• Publication Number:
  US 20030174241A1
• Time in Patent Office: Days
• US Class Current: 348/375
• CPC Class Codes: B41J 2/16585 for paper-width or non-reciprocating print heads
• CPC Class Codes: B41J 2/17513 Inner structure
• CPC Class Codes: B41J 2/17596 Ink pumps, ink valves
• CPC Class Codes: B41J 2002/14362 Assembling elements of heads
• CPC Class Codes: B41J 2002/14419 Manifold
• CPC Class Codes: B41J 2202/21 Line printing
• CPC Class Codes: B41J 3/36 for portability , i.e. hand-held printers or laptop printers B41J3/4075 takes precedence
• CPC Class Codes: H04N 1/2112 using still video cameras
• CPC Class Codes: H04N 1/2154 the still video camera incorporating a hardcopy reproducing device, e.g. a printer
• CPC Class Codes: H04N 2101/00 Still video cameras
• CPC Class Codes: H04N 23/00 Cameras or camera modules comprising electronic image sensors; Control thereof
• CPC Class Codes: H04N 5/2628 Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation

Abstract

A camera includes an image sensor for sensing an image; a processor for processing the sensed image; and a printing system for printing out the sensed image. The processor provides color correction of a sensed image before being printed out by the printhead comprising the steps of utilizing the image sensor device to sense a first image; processing the first image to determine color characteristics of the first image; utilizing the image sensor device to sense a second image, in rapid succession to the first image; applying color correction to the second image based on the determined color characteristics of the first image; and printing out the second image. Preferably, the second image is sensed within 1 second of the first image and the processing step includes examining the intensity characteristics of the first image. The processing step can also include determining a maximum and minimum intensity of the first image and utilizing the intensities to rescale the intensities of the second image.

Claims

1. In a portable camera system a method of color correcting a sensed image, the method including the steps of:

obtaining a first image;

determining color characteristics of said first image;

obtaining a second image in rapid succession to said first image; and

applying color correction to said second image based on the determined color characteristics of said first image to produce a modified second image.

2. The method as claimed in claim 1 wherein said second image is sensed within 1 second of said first image.

3. The method as claimed in claim 1 wherein the step of determining color characteristics includes examining the intensity characteristics of said first image.

4. The method as claimed in claim 1 wherein the step of determining color characteristics includes determining a maximum and minimum intensity of said first image and utilizing said intensities to rescale the intensities of said second image.

5. The method as claimed on claim 1 wherein an image sensor device is utilized to obtain the first image and the second image.

6. The method as claimed in claim 1 wherein a processor is used to determine the color characteristics of the first image and to apply color correction to produce the modified second image.

7. The method as claimed in claim 1 including printing the modified second image.

8. The method as claimed in claim 7 wherein the camera includes a printing system and printing the modified second image includes printing the modified second image with the printing system.

9. The method as claimed in claim 1 includes determining intensity characteristics of said first image.

10. The method as claimed in claim 1 wherein modifying the second image includes modifying the intensity characteristics.