High resolution zoom: a novel digital zoom for digital video camera
First Claim
Patent Images
1. A method for zooming a camera, comprising the steps of:
- (A) generating an electronic image by sensing an optical image received by said camera, said sensing including electronic cropping to a window size to establish an initial resolution for said electronic image;
(B) generating a final image by decimating said electronic image by a decimation factor to a final resolution smaller than said initial resolution; and
(C) changing a zoom factor for said final image by adjusting both of said decimation factor and said window size.
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Abstract
A camera system and a method for zooming the camera system is disclosed. The method generally includes the steps of (A) generating an electronic image by sensing an optical image received by the camera, the sensing including electronic cropping to a window size to establish an initial resolution for the electronic image, (B) generating a final image by decimating the electronic image by a decimation factor to a final resolution smaller than the initial resolution and (C) changing a zoom factor for the final image by adjusting both of the decimation factor and the window size.
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Citations
24 Claims
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1. A method for zooming a camera, comprising the steps of:
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(A) generating an electronic image by sensing an optical image received by said camera, said sensing including electronic cropping to a window size to establish an initial resolution for said electronic image;
(B) generating a final image by decimating said electronic image by a decimation factor to a final resolution smaller than said initial resolution; and
(C) changing a zoom factor for said final image by adjusting both of said decimation factor and said window size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for zooming a camera, comprising the steps of:
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(A) generating an electronic image by sensing an optical image received by said camera; and
(B) generating a final image from said electronic image, wherein (i) a zoom factor for said final image is determined by a combination of an amount of cropping used in generating said electronic image and an optical zooming for said optical image and (ii) said amount of cropping used to achieve said final zoom factor is controllable by a user. - View Dependent Claims (11, 12, 13)
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14. A system comprising:
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a sensor array configured to generate a digital signal by sensing an optical signal, said sensing including electronic cropping to a window size to establish an initial resolution in said digital signal; and
a main circuit configured to (i) generate an output signal by decimating said digital signal by a decimation factor to a final resolution smaller than said initial resolution and (ii) change a zoom factor in said output signal by adjusting both of said decimation factor and said window size. - View Dependent Claims (15, 16, 17)
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18. A system comprising:
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means for generating an electronic image by sensing an optical image received by said apparatus, said sensing including electronic cropping to a window size to establish an initial resolution for said electronic image;
means for generating a final image by decimating said electronic image by a decimation factor to a final resolution smaller than said initial resolution; and
means for changing a zoom factor for said final image by adjusting both of said decimation factor and said window size.
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19. A camera comprising:
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a sensor array configured to generate a digital signal by sensing an optical signal, said sensing including electronic cropping;
a lens assembly providing an optical zoom for said optical signal;
a main circuit configured to (i) generate an output signal from said digital signal and (ii) change a zoom factor in said output signal by adjusting a combination of said optical zoom and said electronic cropping; and
a user input module commanding said main circuit to establish (i) said zoom factor in said output signal and (ii) a relative contribution of said electronic cropping in said zoom factor. - View Dependent Claims (20, 21, 22)
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23. A method for zooming a video camera, comprising the steps of:
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(A) generating an electronic signal by sensing an optical signal received by said video camera, said sensing including an electronic cropping to a window size;
(B) generating a video signal having a zoom factor from said electronic signal; and
(C) determining based on said window size at least one of (i) a bin ratio for use in generating said electronic signal and (ii) if binning is used in generating said electronic signal. - View Dependent Claims (24)
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Specification