Method and apparatus for the removal of flash artifacts

Details Method and apparatus for the removal of flash artifacts Method and apparatus for the removal of flash artifacts

2006-04-11

2006-04-11

Patel, Kanjibhai (Department: 2625)

Image analysis

Image enhancement or restoration

Artifact removal or suppression

C348S223100

Reexamination Certificate

active

07027662

ABSTRACT:
An image without use of a flash is taken, along with an image using a flash. A difference image is generated by subtracting the flash-less image from the flash image. A threshold is applied to the difference image such that only large differences in intensity remain in the difference image. This artifact image is then subtracted from the flash image, thereby removing flash artifacts such as specular reflections and red-eye. The threshold used may be automatically calculated or may be set by the user. For some applications it may be desirable to set separate thresholds for each dimension of the color space (such as red, green, and blue) used. Once again these separate thresholds may be automatically calculated or may be set by the user.

REFERENCES:
patent: 5568194 (1996-10-01), Abe
patent: 6798903 (2004-09-01), Takaoka

Affiliated with

Also associated with

Rating

Method and apparatus for the removal of flash artifacts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for the removal of flash artifacts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the removal of flash artifacts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3527375