Low light level imaging devices
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jan 20, 2005
app pub date -
Jun 21, 2004
filing date -
Dec 21, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Described herein is a method and apparatus for enhancing regions in a low light level image (60) which includes a plurality of bright regions (62, 64, 66) and a person (100) in a region which has low light levels. The image (60) has a gain profile applied to it to compensate for the bright regions (62, 64, 66) and/or to enhance the person (100). The gain profile is derived from the image (60) itself and is chosen to reduce the bright regions (62, 64, 66) and/or enhance the person (100) and his surrounding area (102). If the person (100) only is of interest, the gain profile is such that, for each of lines 'm' to 't', a high gain is applied to pixels within the area (102) and a low gain is applied to pixels outside that area (102). Similarly, if only the bright regions (62, 64, 66) are of interest, a suitable gain profile is derived from the image (60) itself to allow detail in the bright regions (62, 64, 66) to be determined.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully