Determining whether a camera is out-of-focus

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United States of America Patent

PATENT NO 11252320
APP PUB NO 20210281738A1
SERIAL NO

17194611

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Abstract

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A method for determining whether a video camera is out-of-focus comprises: capturing image data; setting a focus setting difference threshold based on a filter function configured to filter the image data; adjusting a focus setting between a present focus setting and an altered focus setting such that a first subset of the image data is captured with the video camera being set in the present focus setting and such that a second subset of the image data is captured with the video camera being set in the altered focus setting, wherein the adjusting is performed such that a difference between the present and altered focus settings is below the threshold; forming the video stream by applying the filter function on the image data; determining first and second focus metrics of the image data; and determining whether the video camera is out-of-focus by comparing the first and second focus metrics.

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Patent Owner(s)

  • AXIS AB

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benderius, Björn Lund, SE 12 14
Jeppsson, Johan Lund, SE 5 11
Jonsson, Fritjof Lund, SE 1 4
Levin, Jonas Lund, SE 1 4
Lindgren, Stefan Lund, SE 13 215
Svensson, Niclas Lund, SE 7 30

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