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Pupil covering state detection device, and in-vehicle camera provided therewith

A state detection device and pupil technology, which is applied in the direction of eye testing equipment, computer components, character and pattern recognition, etc., can solve the problem that the driver's pupil cannot be detected correctly

Active Publication Date: 2015-02-04
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the driver wears glasses, sometimes the pupils are covered by the frame of the glasses, and the driver's pupils cannot be detected correctly, so it is necessary to obtain information on whether the pupils are covered

Method used

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  • Pupil covering state detection device, and in-vehicle camera provided therewith
  • Pupil covering state detection device, and in-vehicle camera provided therewith

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0036] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0037] First, according to figure 1 and figure 2 The configuration of an on-vehicle camera according to an embodiment of the present invention will be described.

[0038] like figure 1 As shown, the vehicle-mounted camera 1 of this embodiment includes an imaging device 10 and a pupil occlusion state detection device 20 .

[0039] The imaging device 10 has a lens unit 11, an imaging element 12 as an imaging means, and a signal processing circuit 13, and captures the face of a driver of a vehicle as a subject, and converts image data of the captured subject into a predetermined format. The interval of is output to the pupil shielding state detection device 20.

[0040] The imaging device 10 is installed in an area where the driver can directly see when the driver directs his gaze toward the dashboard. For example, the imaging device 10 is installed in a dashboard of...

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PUM

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Abstract

Provided is a pupil hidden state detecting apparatus which can detect directly a hidden state of a pupil without detecting a hiding object. The pupil hidden state detecting apparatus 20 is comprises: a visual line direction detecting section 22 operable to detect a direction of a visual line of a driver; a brightness gradient calculating section 23 operable to calculate a brightness gradient of an image of an eye area; a gradient intensity calculating section 24 operable to calculate a gradient intensity vertical distribution ; a gradient intensity storing section 25 adapted to store therein the data of a reference gradient intensity vertical distribution under the state that the direction of the visual line of the driver is toward an instrument panel; a difference calculating section 26 operable to calculate a difference between the gradient intensity vertical distribution of the current frame and the reference gradient intensity vertical distribution; an evaluation value calculating section 27 operable to calculate an evaluation value indicating a degree of possibility that the pupil of the driver is hidden; and a pupil hidden judging section 29 operable to judge that the pupil is hidden, when the evaluation values indicative of the pupil being hidden is continued.

Description

technical field [0001] The present invention relates to a pupil shielding state detection device used in a device for detecting a state of drowsiness or distraction of a driver of a vehicle, and an on-vehicle camera having the same. Background technique [0002] In an apparatus for detecting a driver of a vehicle who is drowsy or distracted, it is necessary to detect the driver's pupils from a captured image of the driver. However, if the driver wears glasses, the pupils of the driver's pupils may be obscured by the frames of the glasses, and the driver's pupils may not be detected correctly. Therefore, it is necessary to obtain information on whether the pupils are obscured. As one of the detection means, there is disclosed a method of detecting the frame itself of glasses and detecting whether the frame of the glasses covers the pupil (for example, refer to Patent Document 1). [0003] prior art literature [0004] Patent Document 1: Japanese Patent No. 3683613 Content...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/113
CPCA61B5/18A61B3/0025A61B3/113A61B5/163G06V40/19
Inventor 松岛廉浩築泽宗太郎
Owner PANASONIC CORP