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:
Sep. 22, 2026
Filed:
Jun. 04, 2021
Interdigital Ce Patent Holdings, Sas, Paris, FR;
Laurent Cauvin, Chevaigne, FR;
Frederic Plissonneau, Thorigné-fouillard, FR;
Guillaume Poirier, Rennes, FR;
InterDigital CE Patent Holdings, SAS, Paris, FR;
Abstract
A method for inverse tone mapping by obtaining a gain function, called initial gain function, of a first inverse tone mapping function; if an analysis of a current image shows that at least a pixel of the current image with a luminance value at least equal to a luminance value depending of a predetermined percentage of the pixels of the current image have an expanded luminance value resulting from an application of the first ITM function to the current image higher than a target value, applying a second ITM function to the current image, the second ITM function corresponding to the first inverse tone mapping function in which the gain function has been replaced by a modified gain function derived from the initial gain function in which a gain provided by the initial gain function is attenuated by an attenuation function, said attenuation function being weighted by a weighting factor controlling a strength of the attenuation, the weighting factor depending on a statistical distribution of luminance values in an histogram of the current image between a maximum luminance value and the luminance value depending of the predetermined percentage.