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. 28, 1992
Filed:
Nov. 12, 1991
Robert M Goodwin, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
This invention relates to a method for increasing the range of values representing a color image which exhibit a linear response. To increase the linear range, look-up tables are formed which straighten the toe and shoulder regions of film's three density vs log exposure curves up to a prescribed limit. The values of the minimum densities for the piece of film containing the image are determined. The representative values of the image are then aligned with the input values of the look-up tables by a relative shift of the image values and the table values so that the minimum density values of the image equal the minimum density values in the look-up tables. The color density image is then processed through the look-up tables to increase its linear range.