Image analysis – Image enhancement or restoration – Intensity – brightness – contrast – or shading correction
Reexamination Certificate
2006-03-07
2006-03-07
Choobin, Barry (Department: 2623)
Image analysis
Image enhancement or restoration
Intensity, brightness, contrast, or shading correction
C382S169000, C382S194000, C250S205000
Reexamination Certificate
active
07010174
ABSTRACT:
A system and process for generating High Dynamic Range (HDR) video is presented which involves first capturing a video image sequence while varying the exposure so as to alternate between frames having a shorter and longer exposure. The exposure for each frame is set prior to it being captured as a function of the pixel brightness distribution in preceding frames. Next, for each frame of the video, the corresponding pixels between the frame under consideration and both preceding and subsequent frames are identified. For each corresponding pixel set, at least one pixel is identified as representing a trustworthy pixel. The pixel color information associated with the trustworthy pixels is then employed to compute a radiance value for each pixel set to form a radiance map. A tone mapping procedure can then be performed to convert the radiance map into an 8-bit representation of the HDR frame.
REFERENCES:
patent: 5828793 (1998-10-01), Mann
patent: 6334023 (2001-12-01), Bruls
patent: 6593970 (2003-07-01), Serizawa et al.
patent: 6760484 (2004-07-01), Sobol
patent: 6850642 (2005-02-01), Wang
patent: 6864916 (2005-03-01), Nayar et al.
patent: 6879731 (2005-04-01), Kang et al.
patent: 2002/0131095 (2002-09-01), Koike
patent: 2003/0128893 (2003-07-01), Castorina et al.
patent: 2003/0202589 (2003-10-01), Reitmeier et al.
patent: 2004/0008267 (2004-01-01), Chen et al.
patent: 2004/0036797 (2004-02-01), Stark
patent: 2004/0069930 (2004-04-01), Zarnowski et al.
patent: 2004/0100565 (2004-05-01), Chen et al.
patent: 2004/0169740 (2004-09-01), Pain et al.
patent: 2005/0094852 (2005-05-01), Kumar et al.
patent: 2005/0195223 (2005-09-01), Nitta et al.
Kang Sing Bing
Szeliski Richard
Uyttendaele Matthew T.
Winder Simon
Choobin Barry
Lyon Richard T.
Microsoft Corporation
LandOfFree
System and process for generating high dynamic range video does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and process for generating high dynamic range video, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and process for generating high dynamic range video will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3524288