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:
Feb. 11, 2014
Filed:
Apr. 21, 2009
Quan Huynh-thu, Ipswich, GB;
Benjamin Pernot, Ipswich, GB;
Quan Huynh-Thu, Ipswich, GB;
Benjamin Pernot, Ipswich, GB;
Psytechnics Limited, , GB;
Abstract
The present invention relates to an apparatus and method for normalization of an image signal, particularly for use in perceptual video and still image quality measurement when the quality measurement is achieved by making a comparison between a reference signal and a decoded signal. The invention provides a method for normalizing a decoded image signal in relation to a reference image signal to generate a normalized image signal comprising the steps of: generating a non-linear transformation vector in dependence upon at least one component of the decoded image signal and at least one component of the reference image signal; and applying said non-linear transformation vector to at least one component of the decoded image signal to generate a normalized image signal. Methods and apparatus for perceptual video and still image quality measurement using said method are also provided.