Range differentiators for auto-focusing in optical imaging systems

A range differentiator useful for auto-focusing, the range differentiator including an image generator providing an image of a scene at various physical depths, a depth differentiator distinguishing portions of the image at depths below a predetermined threshold, irrespective of a shape of the porti...

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Bibliographische Detailangaben
Hauptverfasser:	Katzir, Yigal, Lutsker, Ilia, Wiseman, Shai, Goldenberg, Chay, Shnit, Ofir
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMAGE DATA PROCESSING OR GENERATION, IN GENERAL MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TESTING
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Beschreibung
Zusammenfassung:	A range differentiator useful for auto-focusing, the range differentiator including an image generator providing an image of a scene at various physical depths, a depth differentiator distinguishing portions of the image at depths below a predetermined threshold, irrespective of a shape of the portions, and providing a depth differentiated image and a focus distance ascertainer ascertaining a focus distance based on the depth differentiated image.