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Tracking apparatus and tracking method

A tracking device and focus detection technology, applied in the field of tracking devices

Active Publication Date: 2014-04-16
OM DIGITAL SOLUTIONS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, when the state of two subjects A and E contained in the tracking frame W changes as Figure 24 When the subject A is separated from the subject E as shown, the tracking frame W may switch to tracking another subject E and be located at the tracking position B3

Method used

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  • Tracking apparatus and tracking method
  • Tracking apparatus and tracking method

Examples

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Embodiment Construction

[0043] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

[0044] figure 1A configuration diagram showing an example of an imaging device 100 including a tracking device. The imaging device (this device) 100 includes an imaging optical system 102, a focus adjustment mechanism 104, an aperture 106, an aperture driving mechanism 108, a shutter 110, a shutter driving mechanism 112, an imaging element 114, an imaging element interface (IF) circuit 116, an SDRAM 118, a display Element 120 , display element drive circuit 122 , touch panel 124 , touch panel drive circuit 126 , recording medium 128 , system controller 130 equipped with CPU 1301 , camera operation switch 132 , and flash memory (FlashROM) 134 .

[0045] The imaging unit 101 includes an imaging optical system 102 , a focus adjustment mechanism 104 , an aperture 106 , an aperture driving mechanism 108 , a shutter 110 , a shutter driving mechanism 112 , an imaging elem...

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PUM

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Abstract

The present invention provides a tracking apparatus and a tracking method. The tracking apparatus includes a grouping setting unit, a tracking feature detection unit, a tracking unit. The grouping setting unit groups a plurality of focus detection areas with an in-focus state. The tracking feature detection unit detects a feature amount of the tracking target in areas of the groups grouped. The tracking unit tracks the tracking target in accordance with a first or second tracking position depending on the number of the set groups.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims priority from prior Japanese Patent Application No. 2012-227758 filed on October 15, 2012, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a tracking device with improved tracking performance for a subject to be tracked, which is applied to an imaging device such as a digital camera, for example. Background technique [0004] As techniques for tracking a subject, there are, for example, JP-A-2007-011054 and JP-A-2009-268086. Japanese Patent Application Laid-Open No. 2007-011054 discloses a technique of tracking a subject using, for example, an AF evaluation value used in contrast autofocus (contrast AF). This publication discloses a technique of calculating a contrast detection signal based on an output signal of an imaging element for a plurality of AF areas while driving the focus lens, and detecting ...

Claims

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Application Information

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IPC IPC(8): H04N5/232H04N9/04
CPCG06K9/00261G06K9/00664G06K9/00268H04N5/23219G06T7/74G06T7/11G06T7/248G06V40/167H04N23/675H04N23/673H04N23/61H04N23/611H04N23/635G06V20/10G06V40/168
Inventor 米山尚
Owner OM DIGITAL SOLUTIONS CORP
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