Tracking device and image-capturing apparatus
First Claim
1. A tracking device, comprising:
- an image sensor that obtains image information of an image present within an image plane formed via an optical system;
a tracking unit that tracks a target within the image plane based upon the image information;
a focus detection unit that detects a focus adjustment state of the optical system over at least one focus detection area set in the image plane;
a control unit that executes focus adjustment control for the optical system based upon the focus adjustment state detected in the focus detection area corresponding to a position of the target; and
a decision-making unit that makes a decision as to whether or not the target is being tracked based upon results of tracking operation executed by the tracking unit,wherein the control unit bans the focus adjustment control based upon results of the decision made by the decision-making unit.
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Abstract
A tracking device includes: an image sensor that obtains image information of an image present within an image plane formed via an optical system; a tracking unit that tracks a target within the image plane based upon the image information; a focus detection unit that detects a focus adjustment state of the optical system over at least one focus detection area set in the image plane; a focus adjustment unit that executes focus adjustment for the optical system based upon the focus adjustment state detected in the focus detection area corresponding to a position of the target; a decision-making unit that makes a decision as to whether or not the target is being tracked based upon results of tracking operation executed by the tracking unit; and a control unit that bans the focus adjustment based upon results of the decision made by the decision-making unit.
14 Citations
32 Claims
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1. A tracking device, comprising:
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an image sensor that obtains image information of an image present within an image plane formed via an optical system; a tracking unit that tracks a target within the image plane based upon the image information; a focus detection unit that detects a focus adjustment state of the optical system over at least one focus detection area set in the image plane; a control unit that executes focus adjustment control for the optical system based upon the focus adjustment state detected in the focus detection area corresponding to a position of the target; and a decision-making unit that makes a decision as to whether or not the target is being tracked based upon results of tracking operation executed by the tracking unit, wherein the control unit bans the focus adjustment control based upon results of the decision made by the decision-making unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A tracking method, comprising:
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obtaining image information of an image within an image plane formed via an optical system; tracking a target within the image plane based upon the image information; detecting a focus adjustment state of the optical system in correspondence to at least one focus adjustment area set within the image plane; executing focus adjustment control for the optical system by using the focus adjustment state detected in the focus detection area corresponding to a position of the target; making a decision as to whether or not results of tracking operation for the target have met a predetermined condition; and controlling the focus adjustment control based upon results of the decision. - View Dependent Claims (19, 20, 21)
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22. A tracking device, comprising:
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an image sensor that obtains image information of an image present within an image plane formed via an optical system; a tracking unit that tracks a target within the image plane based upon the image information; a focus detection unit that detects a focus adjustment state of the optical system over at least one focus detection area set in the image plane; a control unit that executes focus adjustment control for the optical system by using the focus adjustment state detected in the focus detection area corresponding to a position of the target; and a decision-making unit that makes a decision as to whether or not results of tracking operation executed by the tracking unit have met a predetermined condition, wherein the control unit controls the focus adjustment control based upon results of the decision made by the decision-making unit. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification