Transfer function and high dynamic range images

Details Transfer function and high dynamic range images Transfer function and high dynamic range images

2005-02-15

2009-12-01

Tran, Nhan T (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S362000, C382S266000

Reexamination Certificate

active

07626614

ABSTRACT:
Methods and apparatuses to derive at least one exposure function for high dynamic range imaging from images of different exposure durations. In one aspect, a method to generate a high dynamic range image from a plurality of images taken with a plurality of exposure durations respectively, includes: computing an exposure function from the plurality of images; and combining the plurality of images into a high dynamic range (HDR) image using the exposure function. In one example of an embodiment, the exposure function is evaluated through: evaluating first data representing a derivative of the exposure function from pixel values of the plurality of images; and integrating the first data to generate second data representing the exposure function.

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