Method and system for automatically focusing a camera
First Claim
1. A method for automatically focusing an image received by an image capture unit relative to a target, the target being present in a sequence of one or more scanned frames, the method comprising:
- dividing into a plurality of sections, each frame from the sequence of one or more scanned frames; and
iteratively performing in connection with each frame as the frame is scanned, wherein each iteration is performed relative to a different section, a determination of a relative focus of the target within the corresponding section of the frame, and an adjustment of a position of at least a first light path adjustment element in response to the determined relative focus.
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Accused Products
Abstract
A method and system for automatically focusing an image received by an image capturing unit (100) relative to a target is disclosed. The target is present in a sequence of one or more scanned frames. The method includes dividing (302) each frame from the sequence of one or more scanned frames in a plurality of sections. The method further includes iteratively determining (304) a relative focus of the target within each section of the plurality of sections. The method further includes adjustment (306) of a position of at least a first light path adjustment element in response to the determined relative focus.
39 Citations
20 Claims
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1. A method for automatically focusing an image received by an image capture unit relative to a target, the target being present in a sequence of one or more scanned frames, the method comprising:
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dividing into a plurality of sections, each frame from the sequence of one or more scanned frames; and
iteratively performing in connection with each frame as the frame is scanned, wherein each iteration is performed relative to a different section, a determination of a relative focus of the target within the corresponding section of the frame, and an adjustment of a position of at least a first light path adjustment element in response to the determined relative focus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for determining an initial starting position of at least a first light path adjustment element, in conjunction with automatically focusing an image received by an image capture unit relative to a target, the method comprising:
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capturing an image;
dividing a captured image into a plurality of sections;
determining a relative focus for each section of the captured image;
comparing the relative focus for each of the sections of the captured images; and
if the relative focus for each of the sections is within a predetermined tolerance, then the initial starting position of at least the first light path adjustment element, corresponds to a focal distance, which is proximal relative to the image capture unit, otherwise if the relative focus for each of the sections is not within a predetermined tolerance, then the initial starting position of at least the first light path adjustment element corresponds to a focal distance, which is distal relative to the image capture unit.
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20. A method for determining an initial starting position of at least a first light path adjustment element, in conjunction with automatically focusing an image received by an image capture unit relative to a target, the method comprising:
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capturing an image;
determining a color content of the captured image;
if the image includes substantially no color content, then the initial starting position of at least the first light path adjustment element, corresponds to a focal distance, which is proximal relative to the image capture unit, otherwise if the image includes more than substantially no color content, then the initial starting position of at least the first light path adjustment element corresponds to a focal distance, which is distal relative to the image capture unit.
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Specification