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Imaging apparatus and method of tracking subject in the imaging apparatus

A camera device and image capture technology, which is applied to measuring devices, installation, image enhancement, etc., can solve the problems of decreased tracking accuracy of photographed objects, decreased accuracy of object tracking recognition, etc.

Active Publication Date: 2015-09-16
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At this time, there is a problem that the accuracy of identifying and tracking the subject decreases due to changes in the shape of the light emitting unit or the flickering brightness of the light emitting unit itself.
[0007] This point also exists in the ROI (Region Of Interest: Region of Interest) technology used in JPEG2000 to improve the image quality of a specific area, for example. The accuracy of object tracking is also affected by misidentifying the background area other than the object as the object. decline

Method used

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  • Imaging apparatus and method of tracking subject in the imaging apparatus
  • Imaging apparatus and method of tracking subject in the imaging apparatus
  • Imaging apparatus and method of tracking subject in the imaging apparatus

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Embodiment Construction

[0014] One embodiment when the present invention is applied to a digital camera for tracking a light tag in a captured image will be described below with reference to the drawings.

[0015] figure 1 It is a block diagram showing the circuit configuration of the digital camera 10 of this embodiment. In this figure, the optical image of the subject is incident on a solid-state imaging device (IS) composed of, for example, a CCD (Charge Coupled Device: Charge Coupled Device) or a CMOS image sensor through a photographic lens unit 11 provided on the front of the camera housing. 12 for imaging.

[0016] In a monitoring state called through image display or live view image display, an image signal obtained by imaging with the solid-state imaging element 12 is sent to the AGC / A / D conversion unit 13, and correlation square sampling is performed. (correlative square sampling), automatic gain adjustment, and A / D conversion processing for digitization. Image data of this digital value...

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Abstract

An imaging apparatus for tracking a subject is provided. The An imaging apparatus has an imaging unit which images a subject to obtain an image, an area detecting unit which detects in the image obtained by the imaging unit a light changing area, in which light changes in a time-series manner, a position detecting unit which detects a position of the light changing area detected by the area detecting unit in the image obtained by the imaging unit, a local area searching unit which searches for a local area within a prescribed region defined on the basis of the position of the light changing area detected by the position detecting unit, wherein the local area shows a large feature value in an image processing, and a tracking unit which tracks movement of the local area found by the local area searching unit.

Description

[0001] References to related applications [0002] This application is based on Japanese Patent Application No. 2014-050702 filed on March 13, 2014, and enjoys the benefit of priority thereof; the entire contents thereof are incorporated in this application. technical field [0003] The invention relates to an imaging device using visible light communication technology and an object tracking method of the imaging device. Background technique [0004] Various techniques have been proposed in which a camera monitors an object including a light emitting unit that transmits information by visible light communication technology to identify transmitted information (for example, Japanese Patent Application Laid-Open No. 2010-267072). [0005] Including the technology described in the above-mentioned patent documents, when tracking an object including a light-emitting unit of visible light communication in an image captured by a camera, it is usually processed by an algorithm that c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N5/232
CPCG06T7/2033H04N5/232G01S3/7864G02B7/10H04N5/2354G06T2207/10016G06T2207/10152H04N5/23296G06T2207/30204G06T7/246H04N23/61H04N23/69
Inventor 石原正规
Owner CASIO COMPUTER CO LTD