Measurement device and method, imaging device, and program

一种摄像装置、测定装置的技术，应用在测量装置、聚焦装置、安装等方向，能够解决检测精度降低等问题，达到简单结构的效果

Active Publication Date: 2009-09-09
OMRON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In addition, if calibration is not performed and the constant correlation rule is applied regardless of the difference in the person, the detection accuracy may decrease due to individual differences in the amount of facial features.

Method used

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  • Measurement device and method, imaging device, and program
  • Measurement device and method, imaging device, and program
  • Measurement device and method, imaging device, and program

Examples

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Embodiment Construction

[0064] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0065] First, refer to Figure 1 ~ Figure 3 , the principle applicable to the measurement of the subject distance between the imaging device and the person in the present invention will be described.

[0066] figure 1 It is a diagram schematically showing the relationship between the imaging device 11 , the human eyeball 12 , and the light rays incident on the eyeball 12 .

[0067] When photographing a person (hereinafter referred to as a subject person) by the imaging device 11 , when a radio frequency flash is irradiated, the red-eye phenomenon may occur, that is, the subject person's eyes are photographed red. The red-eye phenomenon means that light rays such as a strobe light incident on the eyeball 12 pass through the cornea 21, the lens 23, and the vitreous body 24, reach the capillaries of the retina 25 (and the choroid, not shown), and red light as the reflect...

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Abstract

The present invention provides a measurement device and method, an imaging device and a program, which can reliably measure the distance between the imaging device and the person through a simple structure. A measurement device has a light source (L), an imaging device (111), and a distance measuring section. The distance measuring section obtains a distance (Dp) between the imaging device and a person based on a presence of occurrence of a red-eye effect at an eye (151) of the person in an image in which the person irradiated with an illumination light emitted from the light source is imaged by the imaging device, and a distance between an optical axis of the imaging device and the light source (Da). For example, the present invention can be used in imaging device.

Description

technical field [0001] The present invention relates to a measuring device and method, an imaging device, and a program, and particularly relates to a measuring device and method, an imaging device, and a program for measuring the distance between an imaging device and a person. Background technique [0002] Conventionally, as a method of measuring the distance between a camera and a person (hereinafter referred to as the subject distance), the method of irradiating light toward a person and measuring the distance based on the time until the reflected light returns (active distance measurement) is generally used. ; method of calculating distance based on the contrast in the captured image (passive distance measurement); method of radiating radio waves toward people and measuring distance based on the time until the reflected wave is received; recognition of faces in captured images , a method of calculating a distance based on facial features such as the distance between the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B13/20G01C3/00
CPCB60R21/01538G02B7/32B60R2021/01541
Inventor 大元靖理
Owner OMRON CORP
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