Image analysis – Image enhancement or restoration – Focus measuring or adjusting
Reexamination Certificate
2004-11-10
2009-12-29
Mehta, Bhavesh M (Department: 2624)
Image analysis
Image enhancement or restoration
Focus measuring or adjusting
C382S107000, C382S294000, C382S299000, C348S208990
Reexamination Certificate
active
07639889
ABSTRACT:
A digital image acquisition system includes a portable apparatus for capturing digital images and a digital processing component for detecting, analyzing and informing the photographer regarding motion blur, and for reducing camera motion blur in an image captured by the apparatus. The digital processing component operates by comparing the image with at least one other image, for example a preview image, of nominally the same scene taken outside the exposure period of the main image. In one embodiment the digital processing component determines the degree of artifacts and whether to inform the user that the image is blurred by identifying at least one feature in a single preview image which is relatively less blurred than the corresponding feature in the main image. In another embodiment, the digital processing component calculates a trajectory of at least one feature in a plurality of preview images, extrapolates such feature on to the main image, calculates a PSF in respect of the feature, and informs the user based on the calculated PSF. In another embodiment the digital processing unit after determining the degree of blur notifies the photographer of the existing blur or automatically invokes consecutive captures. In another embodiment, the digital processing unit determines whether the image quality is acceptable from real time analysis of the captured image and provides this information to the user. Such real time analysis may use the auto focusing mechanism to qualitatively determine the PSF.
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Corcoran Peter
Prilutsky Yury
Steinberg Eran
Bloom Nathan
FotoNation Ireland Ltd.
Mehta Bhavesh M
Smith Andrew V.
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