Patent №
US 7,003,153
Granted
2006-02-21
Filed 2000
Owner
SHARP LABORATORIES OF AMERICA, INC.
+1 more
Lab
—
AI components
2
vision · hardware
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
09676523
Methods and apparatus for video contrast enhancement are disclosed. A pixel level threshold is set for an input video frame in a video sequence. For pixel levels in the input video frame that are below the threshold, an adaptive contrast-enhancing function is applied. For other pixel levels, a scene-stable mapping function is applied.This contrast enhancement method can improve the contrast in darker areas of a scene depicted in the video sequence, without destroying the intended light levels for a scene or causing temporal brightness fluctuations in the enhanced video sequence.
AI classification
Ownership
SHARP LABORATORIES OF AMERICA, INC.
assignment · 111780396
SHARP KABUSHIKI KAISHA
assignment · 187000842
Assignors
KEROFSKY, LOUIS JOSEPH
On an employer assignment, the assignors are typically the inventors.