Image pickup apparatus with controlling of setting of position of cropping area
AssigneeCanon Kabushiki Kaisha
InventorMomoe Katsumata
Life of this patent
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Abstract
A zoom magnification is calculated based on a focal length of a photographing lens obtained before zooming and the focal length of the photographing lens obtained after the zooming. Then, an object movement amount in an image pickup area of an image pickup element is calculated based on the zoom magnification and an object position obtained before the zooming. Thus, a change in the position of the cropping area is controlled.
Claims8
An image pickup apparatus comprising:
- a lens information obtaining unit configured to obtain information on a photographing lens with a zoom function;
- an image pickup unit configured to photoelectrically convert an object image formed on an image pickup plane by the photographing lens to generate an image signal;
- a cropping area setting unit configured to set a size and a position of a cropping area;
- an object position storing unit configured to detect and store the object position in the image pickup plane on the basis of the image signal;
- a focal length storing unit configured to store a focal length of the photographing lens obtained by the lens information obtaining unit;
- a controller configured to control the lens information obtaining unit to allow the current focal length of the photographing lens to be obtained, wherein the controller controls setting of the position of the cropping area carried out by the cropping area setting unit on the basis of the focal length stored by the focal length storing unit, the current focal length and the object position stored in the object position storing unit;
- and
- a display unit configured to display the image data in accordance with the size and position of the cropping area which is set by the cropping area setting unit under control of the control unit.
A control method of an image pickup apparatus including a photographing lens with a zoom function and an image pickup element configured to photoelectrically convert an object image formed on an image pickup plane by the photographing lens to generate an image signal, comprising the steps of:
- obtaining information on the photographing lens with the zoom function;
- setting a size and a position of a cropping area;
- detecting and storing the object position in the image pickup plane on the basis of the image signal;
- storing a focal length of the photographing lens obtained in the lens information obtaining step;
- controlling the lens information obtaining step to allow the current focal length of the photographing lens to be obtained and to control setting of the position of the cropping area carried out in the cropping area setting step on the basis of the focal length stored in the focal length storing step, the current focal length and the object position stored in the object position storing step;
- and
- displaying the image data in accordance with the size and position of the cropping area which is set in the cropping area setting step under control of the control unit.
Dependencies are inferred from the claim text.