The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2002
Filed:
Feb. 28, 1997
Cindy Y. Sansom-Wai, San Diego, CA (US);
Kirt A. Winter, Escondido, CA (US);
Paul M. Hubel, Mountain View, CA (US);
Hewlett-Packard Company, PaloAlto, CA (US);
Abstract
A digital camera includes a lens and a plurality of color filters adjacent the lens. An array of detectors such as CCDs each receive, through the lens and a corresponding one of the color filters, light reflected from a scene. Each detector outputs a signal representative of an amount of light it receives. Circuitry is connected to the array for processing the signals from the detectors and generating a set of digital image data including a chromaticity value and a luminance value of a plurality of pixels representing an uncorrected image of the scene. A control circuit maps a two-dimensional representation of the digital image data into a two-dimensional representation of a set of reference image data and adjusts selected ones of the values of the set of digital image data in accordance with a predetermined transform to white balance the uncorrected image of the scene and produce a modified set of digital image data representing a corrected image of the scene.