Image quality enhancement circuit and method using...

Image analysis – Image enhancement or restoration

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C382S169000, C382S274000, C382S275000, C358S003260, C358S003270, C358S522000

Reexamination Certificate

active

10600647

ABSTRACT:
An image quality enhancement circuit and a method using inter-frame correlativity includes a first transfer function generator calculating histogram data corresponding to a gray level distribution with respect to an inputted luminance signal by frame unit to generate a first transfer function by using the histogram data, an inter-frame correlativity calculator calculating inter-frame correlation coefficients from the histogram data for at least one previous frame and a current frame to output inter-frame correlation information corresponding to the correlation coefficients, a transfer function adjustor selectively outputting the first transfer function based on the inter-frame correlation information outputted from the inter-frame correlativity calculator, and a mapper correcting and outputting the inputted luminance signal based on the transfer function outputted from the transfer function adjustor. The image quality enhancement circuit and method using inter-frame correlativity selectively apply a histogram equalization process based on the correlativity between consecutive frames, thereby enhancing an image quality.

REFERENCES:
patent: 5353355 (1994-10-01), Takagi et al.
patent: 5956435 (1999-09-01), Buzug et al.
patent: 5982926 (1999-11-01), Kuo et al.
patent: 6175427 (2001-01-01), Lehmbeck et al.
patent: 6343143 (2002-01-01), Guillemaud et al.
patent: 6430430 (2002-08-01), Gosche
patent: 6535650 (2003-03-01), Poulo et al.
patent: 6549646 (2003-04-01), Yeh et al.
patent: 6650774 (2003-11-01), Szeliski
patent: 6694051 (2004-02-01), Yamazoe et al.
patent: 6701026 (2004-03-01), Zheng et al.
patent: 183830 (1996-12-01), None
patent: 207660 (1999-04-01), None
patent: 188679 (1999-11-01), None
patent: 255636 (2000-02-01), None
patent: 319864 (2000-07-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Image quality enhancement circuit and method using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image quality enhancement circuit and method using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image quality enhancement circuit and method using... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3901227

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.