Image analysis – Image enhancement or restoration – Variable threshold – gain – or slice level
Reissue Patent
2011-02-15
2011-02-15
Tran, Phuoc (Department: 2624)
Image analysis
Image enhancement or restoration
Variable threshold, gain, or slice level
C382S263000
Reissue Patent
active
RE042148
ABSTRACT:
A visual perception threshold unit for image processing identifies a plurality of visual perception threshold levels to be associated with the pixels of a video frame, wherein the threshold levels define contrast levels above which a human eye can distinguish a pixel from among its neighboring pixels of the video frame. The present invention also includes a method of generating visual perception thresholds by analysis of the details of the video frames, estimating the parameters of the details, and defining a visual perception threshold for each detail in accordance with the estimated detail parameters. The present invention further includes a method of describing images by determining which details in the image can be distinguished by the human eye and which ones can only be detected by it.
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