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:
Apr. 08, 2003
Filed:
Oct. 25, 1999
Michael Robert Hopple, Schenectady, NY (US);
David Allen Langan, Clifton Park, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A method and apparatus are provided for performing an extended dynamic range (EDR) algorithm. The apparatus comprises an EDR processing component which performs the EDR algorithm of the invention in order to compress an image input to the EDR processing component down to a desired gray scale range. The EDR processing component automatically adapts to the dynamic range of an input image so that the input image is compressed down to a desired gray scale range while preserving high frequency contrast information contained in the input image. In addition to automatically adjusting to the dynamic range of the image, the EDR processing component compresses the input image in such a manner that the difference between the input image intensity and the local mean intensity value is taken into account, which prevents artifacts associated with enhanced negative contrast from appearing in the compressed image.