MULTI CAMERA REGISTRATION FOR HIGH RESOLUTION TARGET CAPTURE
First Claim
1. A target image acquisition system comprising:
- a first camera; and
a second camera connected to the first camera; and
wherein;
the first camera is a fixed field-of-view camera;
the second camera is a variable field-of-view camera;
the first camera is for acquiring an image having a target sought in a fixed field of view;
the distance of the target from the first camera is determined by a size of the target; and
the physical size of the target has a nearly constant dimension.
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Accused Products
Abstract
A multi-camera arrangement for capturing a high resolution image of a target. A first camera may be for capturing a wide field of view low resolution image having a target. The target or a component of it may be border-boxed with a marking. The target may be a human being component, such as a face, having approximately the same size among virtually all humans. A distance of the target may be determined from a known size of a component of the target. The target may be other items of similar size. Coordinates of pixels of the image portion containing the target may be mapped to a pan, tilt and zoom (PTZ) camera. The pan and tilt of the PTZ camera may be adjusted according to image information from the wide field of view camera. Then the PTZ camera may zoom in on the target to obtain a high resolution image of the target.
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Citations
20 Claims
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1. A target image acquisition system comprising:
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a first camera; and a second camera connected to the first camera; and wherein; the first camera is a fixed field-of-view camera; the second camera is a variable field-of-view camera; the first camera is for acquiring an image having a target sought in a fixed field of view; the distance of the target from the first camera is determined by a size of the target; and the physical size of the target has a nearly constant dimension. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for capturing a high resolution image of a target comprising:
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capturing a wide field of view low-resolution image incorporating a target; determining a distance of the target according to a given size of the target; determining a position of the target; zooming in on the target along with pan and tilt adjustments; and capturing a high resolution image of the target; and wherein various targets of particular kind have a characteristic of a common size. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A system for capturing a high-resolution image of a target, comprising:
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a first camera; a second camera; and a processor connected to the first and second cameras; and wherein; the first camera is for capturing a wide angle low resolution image of a target; the target is a body part of a human being; the body part has a certain size for virtually all human beings; the processor is for mapping coordinates of pixels in the image of the target to the second camera; the certain size is input to the processor; a position of the target is determined by the processor from the image of the target captured by the first camera; the distance of the target from the first camera is determined according to the certain size by the processor; and pan, tilt and zoom adjustments are calculated by the processor from the position and distance of the target to enable the second camera to capture a high resolution image of the target. - View Dependent Claims (19, 20)
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Specification