Patent · US Active

Method and apparatus for image data transformation

US9224363B2 · kind B2 · utility

19Cited by

22References

21Claims

0Family size

Assignee

Dolby Laboratories Licensing Corporation · US

Inventors

Anders Ballestad · Vancouver, CA
Andrey Kostin · Ithaca, US
Gregory John Ward · Pensacola, US

Key dates

Filing date	Mar 15, 2012
Grant date	Dec 29, 2015
Priority date	—
Expiry date	Nov 2, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG09G2320/0666
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Image data is transformed for display on a target display. A sigmoidal transfer function provides a free parameter controlling min-tone contrast. The transfer function may be dynamically adjusted to accommodate changing ambient lighting conditions. The transformation may be selected so as to automatically adapt image data for display on a target display in a way that substantially preserves creative intent embodied in the image data. The image data may be video data.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.