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:
Aug. 30, 2005
Filed:
Dec. 17, 2001
Tarik Hammadou, Kingsford, AU;
Tarik Hammadou, Kingsford, AU;
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method (S) for dynamic range compression of output channel data from an image sensor () comprising an array of sensor cells. The method (S) comprises selecting a window (S) in the channel data, the window having a reference pixel value and a plurality of nearby pixel values. The reference pixel value originates from a reference cell that is one of the sensor cells and the nearby pixel values originate from the sensor cells that are in close proximity to the reference cell. There is a step of multiplying (S) the pixel values, in the window, by a respective weight value to provide weighted pixel values and then adding (S) the weighted pixel values to provide a convolution value. Thereafter, there is a step of providing (S) a dynamic range compression value for the window from a selected one of the pixel values and said convolution value and then an assigning step (S) assigns the dynamic range compression value to a selected pixel location comprising part of an image.