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Object ranging apparatus, imaging apparatus and object ranging method

A technology of distance measuring equipment and objects, which is applied in the direction of the orientation device, image analysis, measuring device, etc., which can solve the problems of difficulty and achieve the effect of improving the tracking accuracy

Inactive Publication Date: 2014-02-12
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Conventionally, since capturing images of moving subjects requires not only high-speed exposure control and focus (focus adjustment state) control, but also prediction that takes into account the time lag between distance measurement and exposure, it is not easy

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  • Object ranging apparatus, imaging apparatus and object ranging method
  • Object ranging apparatus, imaging apparatus and object ranging method
  • Object ranging apparatus, imaging apparatus and object ranging method

Examples

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Embodiment Construction

[0016] An exemplary embodiment of the present invention is characterized in that by using movement locus information including information on a position to which a subject is predicted to move within a composition, image information of a detected subject is combined with a target for at least the above-mentioned predicted position. Image information is compared to perform calculations for subject tracking, thereby identifying the position of the subject at each moment. Specifically, calculation for subject tracking is preferentially performed in an area for the direction in which the subject is assumed to move based on the movement trajectory information of the subject. An imaging device such as a camera or the like can be configured to include the subject distance measuring device.

[0017] A first exemplary embodiment is described below with reference to the drawings. The present exemplary embodiment demonstrates that it is possible to automatically adjust focus based on a ...

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Abstract

The invention provides an object ranging apparatus, an imaging apparatus and an object ranging method. The object ranging apparatus includes a first ranging unit configured to, based on movement locus information including a series of loci of positions to which an object is predicted to move, perform ranging at a plurality of predicted positions on the loci, a storage unit configured to store results of ranging at the plurality of predicted positions, and a control unit configured to, when the object reaches the predicted positions in an actual image capturing operation, perform a focusing operation based on the results of ranging at the predicted positions.

Description

technical field [0001] The present invention relates to a subject distance measuring device and an imaging device including the subject distance measuring device. In particular, the present invention relates to a subject distance measuring device for identifying a movement trajectory of a subject in advance and tracking the subject by using movement trajectory information including position information of the subject, and a device for photographing An imaging device including a subject distance measuring device that captures an image of a subject. Background technique [0002] Conventionally, it has not been easy because taking an image of a moving subject requires not only high-speed exposure control and focus (focus adjustment state) control, but also prediction in consideration of the time lag between distance measurement and exposure. In this specification, the case where the focus adjustment is performed but the distance measurement is not performed may also be referre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
CPCG01S11/12H04N5/23212G06T7/004G01S3/7864H04N23/672H04N23/673
Inventor 菅原淳史
Owner CANON KK
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