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AssigneeAselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi
InventorEmre Turgay
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The present invention relates to the field of image processing and methodologies to passively focus an image automatically, using the electronic sensor signal. The method comprises the steps of; receiving a pixel image, generating at least two histograms of the received image using at least two different frequency components, finding widths of acquired histograms and storing them as a focus measure, finding the difference between last received frame's highest frequency component histogram width and at least one previously received frame's histogram width corresponding to the same component, is there a meaningful difference?, and using the difference to determine the focus direction signal. The system comprises; an image sensor to acquire an electronic pixel image; an image processing unit configured to receive an image and implement the method using this image and output a focus direction signal found by the method; and a memory unit configured to store image histogram widths.
A method for focusing an electronic imaging system, the method comprising the steps of:
A system for focusing an electronic imaging system, comprising:
Dependencies are inferred from the claim text.