Video processing apparatus, video processing method, and recording medium for video processing

Patent metadata

Field	Value
Publication number	US-2022417408-A1
Application number	US-202217823534-A
Country	US
Kind code	A1
Filing date	Aug 31, 2022
Priority date	Mar 12, 2020
Publication date	Dec 29, 2022
Grant date	—

Abstract

A video processing apparatus includes a light irradiation unit, a video acquisition unit, a motion detection unit, and an imaging control unit. The light irradiation unit irradiates a face of an object of shooting with light. The video acquisition unit acquires a video capturing the face of the object of shooting. The motion detection unit detects a speed of motion of at least a portion of the face in the video acquired by the video acquisition unit. The imaging control unit changes an open period of a shutter in the video acquisition unit and a light emission intensity of the light irradiation unit based on the speed detected by the motion detection unit.

First claim

What is claimed is:

1 . A video processing apparatus comprising:
a light irradiation unit that irradiates a face of an object of shooting with light; a video acquisition unit that acquires a video capturing the face of the object of shooting; a motion detection unit that detects a speed of motion of at least a portion of the face in the video acquired by the video acquisition unit; an open/closed eye detection unit that detects an open state and a closed state of eyes in the video acquired by the video acquisition unit; and an imaging control unit that changes an open period of a shutter in the video acquisition unit and a light emission intensity of the light irradiation unit based on the speed detected by the motion detection unit and the open state and the closed state of the eyes detected by the open/closed eye detection unit.

2 . The video processing apparatus according to claim 1 , wherein
the motion detection unit detects a speed of blink in an eye portion in the video.

3 . The video processing apparatus according to claim 1 , wherein
the motion detection unit detects a speed of motion of line of sight in the video.

4 . The video processing apparatus according to claim 1 , wherein
the motion detection unit detects a speed of swinging motion of the face in the video.

5 . The video processing apparatus according to claim 1 , further comprising:
a blur amount detection unit that detects an amount of blur of the object of shooting, wherein the imaging control unit changes the open period of the shutter and the light emission intensity in accordance with the blur amount detected by the blur amount detection unit.

6 . The video processing apparatus according to claim 1 , wherein
a frame rate of the video acquired by the video acquisition unit is changed based on the speed detected by the motion detection unit.

7 . The video processing apparatus according to claim 1 , further comprising:
an image precision detection unit that detects an image recognition precision in the video acquired after the imaging control unit changes the open period of the shutter and the light emission intensity, wherein the imaging control unit changes the open period of the shutter and the light emission intensity in accordance with the image recognition precision detected.

8 . A video processing method comprising:
irradiating a face of an object of shooting with light; acquiring a video capturing the face of the object of shooting; detecting a speed of motion of at least a portion of the face in the video acquired; detecting an open state and a closed state of eyes in the video acquired; and changing an open period of a shutter in the acquiring and a light emission intensity in the irradiating based on the speed detected and the open state and the closed state of the eyes detected.

9 . A non-transitory recording medium for video processing encoded with a program causing a computer to implement modules including:
a light irradiation module that irradiates a face of an object of shooting with light; a video acquisition module that acquires a video capturing the face of the object of shooting; a motion detection module that detects a speed of motion of at least a portion of the face in the video acquired by the video acquisition module; an open/closed eye detection module that detects an open state and a closed state of eyes in the video acquired by the video acquisition module; and an imaging control module that changes an open period of a shutter in the video acquisition module and a light emission intensity in the light irradiation module based on the speed detected by the motion detection module and the open state and the closed state of the eyes detected by the open/closed eye detection module.

10 . The video processing apparatus according to claim 1 , wherein
when an object that reduces a wavelength range of light radiated by the light irradiation unit is sensed, the imaging control unit changes the open period of the shutter and the light emission intensity.

Assignees

• Jvckenwood Corp

Inventors

• Koiso Hisashi

Classifications

• H04N5/77

  between a recording apparatus and a television camera · CPC title

• H04N23/56

  provided with illuminating means · CPC title

• H04N23/72 Primary

  Combination of two or more compensation controls · CPC title

• G06V40/18

  Eye characteristics, e.g. of the iris · CPC title

• G06V20/597

  Recognising the driver's state or behaviour, e.g. attention or drowsiness · CPC title