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Note added at 2 hrs (2010-10-02 12:06:35 GMT)
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"Said detector comprises a photosensitive multielement transducer (1) and means for processing the images of *****the picture-to-picture difference***** which contain..."
(WO/2002/051154) METHOD AND DEVICE FOR IMAGE TRANSFORMATION
www.wipo.int/pctdb/en/wo.jsp?WO=2002051154

"a detailed construction of the motion detection unit 52, which includes a *****picture-to-picture difference***** detector 106 for detecting ..."
"Adaptively controlled multipoint videoconferencing system"
www.freepatentsonline.com/5684527.html



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Note added at 2 hrs (2010-10-02 12:11:18 GMT)
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Reliability Checking Of Vectors For Motion Compensated
...*****the picture-to-picture difference*****. If this luminance is above a certain threshold, the respective pixel is marked as ,,moving".
http://ieeexplore.ieee.org/iel3/4946/13625/00626024.pdf

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Note added at 2 hrs (2010-10-02 12:21:38 GMT)
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Interpolation algorithms in calculating ****the frame-to-frame difference**** for detecting moving point objects
Types of interpolation in calculating *****the frame-to-frame difference***** for decreasing the influence of the stationary background when detecting point objects are compared. The comparison is done for an observation system with a photodetector array and an oscillating axis. Methods of interpolation in the presence of a fractional shift (below the photodetector array step) are considered. Computational experiments estimating the efficiency of the methods upon detecting point objects were carried out.
In:
Optoelectronics, Instrumentation and Data Processing (scholarly and professional JOURNAL)
Volume 43, Number 3, pages 246-251.

The fulltext preview and PDF-version can be seen/downloaded here:
http://www.springerlink.com/content/n2738r127146p555/

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Note added at 2 hrs (2010-10-02 12:25:20 GMT)
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In each frame the total moving area *****frame-to-frame difference***** signal is compared with the total moving area element-to-element difference signal.
www.freepatentsonline.com/3723644.html

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Note added at 2 hrs (2010-10-02 12:28:06 GMT)
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A MULTISCALE APPROACH TO SHOT CHANGE DETECTION
...as *****a frame-to-frame difference*****, as generally large estimated ...
*****frame-to-frame difference***** of this moment is an indicator of the difference between frames. ...
www.mee.tcd.ie/~sigmedia/pmwiki/uploads/Main.../denman04.pd...