Image analysis – Image enhancement or restoration
Reexamination Certificate
2006-12-18
2010-06-29
Couso, Yon (Department: 2624)
Image analysis
Image enhancement or restoration
C382S232000, C382S299000
Reexamination Certificate
active
07747098
ABSTRACT:
A high dynamic range image can be recovered from a full-resolution lower-dynamic-range image and a reduced-resolution higher-dynamic-range image. Information regarding higher spatial frequencies may be obtained by extracting high spatial frequencies from the lower-dynamic-range image. In some embodiments an approximate impulse-response function is determined by comparing the higher- and lower-dynamic range images. A scaling image obtained by applying the impulse-response function to a high-frequency band of the lower-dynamic range image is combined with an upsampled higher-dynamic range image to yield a reconstructed image.
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Couso Yon
Dolby Laboratories Licensing Corporation
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