Method for real-time adjusting image capture frequency by image detection apparatus
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United States of America Patent
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Jan 15, 2013
Grant Date -
Jun 30, 2011
app pub date -
Mar 2, 2010
filing date -
Dec 31, 2009
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Abstract
A method for real-time adjusting image capture frequency by an image detection apparatus comprises: sensing the frames consecutively by an image detection unit; setting a value for a counting variable; selecting a testing frame from the frames and comparing an image displacement between the testing frame and a previous frame thereof, to obtain a motion reference signal by a processing unit; providing a plurality of adjustable values for a capturing frequency variable by a memory unit and corresponding either one of the capturing frequency variable values to the motion reference signal; comparing the value of the counting variable to that of the capturing frequency variable by the processing unit; capturing and recording the testing frame as a sampling frame while the counting variable value reaches that of the capturing frequency variable; comparing an image displacement between the sampling frame and a previous frame thereof, to obtain an ultimate motion speed.
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