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![A frame of a short sequence taken with a Logitech QuickCam Pro 9000... | Download Scientific Diagram A frame of a short sequence taken with a Logitech QuickCam Pro 9000... | Download Scientific Diagram](https://www.researchgate.net/profile/Roberto-Scopigno/publication/267207242/figure/fig2/AS:644671961329664@1530713181026/A-frame-of-a-short-sequence-taken-with-a-Logitech-QuickCam-Pro-9000-1280-720_Q320.jpg)