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:
Jul. 20, 2010
Filed:
Jan. 02, 2002
Philip Atkin, Haslingfield, GB;
Philip Atkin, Haslingfield, GB;
Synoptics Limited, Cambridge, GB;
Abstract
A method of creating an imageobtained from say a camerato obtain a substantially linear representation of the brightness of the image includes, for each of a set of pixels (x, y) in a two dimensional array, calculating, in a computer, an estimate of the true image intensity (i) as a weighted average of n samples of the apparent image intensity (v). This is calculated as: where vis the apparent intensity measured, Tis the exposure time, K is the gain of the system, C is an offset and wis a weighting factor which is defined to maximize the signal to noise ratio and discard insignificant, that is saturated or near zero, values. Thereafter each of the values îis saved together with other data representing the image, before the image is output to a displayor to a printing device.