Camera with subject highlighting and motion detection
First Claim
Patent Images
1. A method of indicating the subject to be photographed in a camera having a viewfinder, comprising the steps of:
- detecting an image;
performing a gradient operation on elements of the image to produce an outline of the subjects that are in focus;
detecting the outline of the subjects that are in focus based on the output of the gradient function; and
highlighting the subjects that are in focus in the viewfinder.
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Abstract
A camera having highlighting for the subject of the photograph and detection of motion of the subject. The camera detects the scene electronically and digitally stores the scene in memory. A gradient operation is performed on elements in the image to produce an indication of the outline of the subjects witin the depth of field. This outline may then be used to highlight the subjects in the viewfinder using an LCD as a mask. The outline may also be used to determine any movement of the subject in order to prevent blur or used as a trigger in a burst exposure mode.
63 Citations
31 Claims
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1. A method of indicating the subject to be photographed in a camera having a viewfinder, comprising the steps of:
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detecting an image; performing a gradient operation on elements of the image to produce an outline of the subjects that are in focus; detecting the outline of the subjects that are in focus based on the output of the gradient function; and highlighting the subjects that are in focus in the viewfinder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A camera comprising:
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an array of sensors for detecting an image; memory means for storing said image; means for performing a gradient function on said stored image to produce an outline of the subjects in said image that are in focus; and means for highlighting the subjects of said image that are in focus in accordance with the gradient function. - View Dependent Claims (23, 24, 25, 26)
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27. A method of indicating the subject to be photographed in a camera having a viewfinder, comprising the steps of:
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detecting an image; performing the gradient operation
space="preserve" listing-type="equation">f(x,y)=|(x,y)-(x+1,y+1)|+|(x+1,y)-(x,y+1).vertline.on elements of the image; detecting the outline of the subject based on the output of the gradient function; and indicating the subject in the viewfinder.
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28. A method of indicating the subject to be photographed in a camera having a viewfinder, comprising the steps of:
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detecting an image; performing a gradient operation on elements of the image; detecting the outline of the subject based on the output of the gradient function; detecting movement of the subject by comparing the outline of the subject at successive times; adjusting the shutter speed in response to the movement of the subject; and indicating the subject in the viewfinder. - View Dependent Claims (29)
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30. A method of indicating the subject to be photographed in a camera having a viewfinder, comprising the steps of:
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detecting an image; capturing data with a predetermined aperture; performing a gradient operation on elements of the image; detecting the outline of the subject based on the output of the gradient function; and highlighting the subject detected in the preceding step in the viewfinder.
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31. A method of indicating the subject to be photographed in a camera having a viewfinder, comprising the steps of:
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detecting an image; performing a gradient operation on elements of the image; detecting the outline of the subject based on the output of the gradient function; detecting movement of the subject by comparing the outline of the subject at successive times; adjusting the shutter speed in response to the movement of the camera; and indicating the subject in the viewfinder.
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Specification