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US 2004/0201730 A1Published application
Image pickup apparatus
AssigneeCanon Kabushiki Kaisha
InventorKYOJI TAMURA
Life of this patent
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Abstract
There is disclosed an image pickup apparatus, which detects the visual axis, can set a photometry area on the basis of the viewpoint of an operator in the screen, can set a plurality of photographing modes, and changes the setting data of the photometry area based on the visual axis detection and control characteristics in accordance with the selected photographing mode.
Claims17
An image pickup apparatus comprising:
- image pickup means having a photoelectric conversion function;
- two-dimensional position selection means for selecting at least a portion of a video signal obtained from said image pickup means;
- exposure control means for controlling an exposure state of the video signal;
- and
- program mode control means, having a plurality of program modes which can be selected in accordance with a photographing condition and are respectively set with control parameters for controlling the exposure state, for outputting a control signal for controlling a position of a photometry area to be subjected to exposure in accordance with position information obtained from said two-dimensional position selection means, and supplying the control parameters set in the selected program mode and the control signal to said exposure control means.
2 more elements
An image pickup apparatus comprising:
- image pickup means having a photoelectric conversion function;
- an electronic viewfinder for displaying a video signal obtained from said image pickup means;
- viewpoint position detection means for detecting a position of a viewpoint of a photographer on a screen of said electronic viewfinder;
- exposure control means for controlling an exposure state of the video signal;
- and
- program mode control means, having a plurality of program modes which can be selected in accordance with a photographing condition and are respectively set with control parameters for controlling the exposure state, for outputting a control signal for controlling a position of a photometry area to be subjected to exposure in accordance with position information obtained from said viewpoint position detection means, and supplying the control parameters set in the selected program mode and the control signal to said exposure control means.
3 more elements
An image pickup apparatus comprising:
- image pickup means for converting an optical image in an image pickup area into an electrical signal;
- signal processing means for generating a video signal serving as a television signal by processing the electrical signal from said image pickup means;
- two-dimensional position selection means for selecting at least a portion of an image area included in an image indicated by the video signal;
- video signal detection means for detecting an exposure state of an image in the selected image area, and generating a detection signal indicating a detection result;
- exposure control means for optimally controlling the exposure state of the image in the selected image area on the basis of exposure control parameters while tracking the detection signal of said video signal detection means;
- photographing condition detection means for detecting a photographing condition on the basis of a control state of the exposure control parameters and a control state of functions of compensating for a photographing operation;
- and
- optimizing means for optimizing setting data of the exposure control parameters associated with exposure control, which is performed to track the detection signal of said video signal detection means, in correspondence with the detected photographing condition.
5 more elements
Dependencies are inferred from the claim text.