US 12,216,289 B2 · Device and method for acquiring multi-luminosity images

Abstract

The present invention relates to a device and a method for acquiring multi-luminosity images, wherein images having multiple luminosities in visible-ray and infrared wavelength domains can be captured and synthesized by using optical filter transmittance adjustment and infrared lighting strength adjustment. The device may comprise: a camera unit for photographing a predetermined subject and acquiring images thereof; a lighting unit disposed on the periphery of the camera unit, the lighting unit comprising a first infrared lamp for modulating and emitting infrared light according to the distance from the subject and a second infrared lamp for modulating and emitting infrared light according to the photography environment; an optical filter unit disposed on the front surface of the camera unit so as to adjust the amount of transmission of light directed to the camera unit; a lamp control unit for controlling the first infrared lamp such that infrared light is modulated on the basis of the distance from the subject; a luminosity multiplexing unit for producing a light multiplexing signal so as to control infrared light modulation by the second infrared lamp and the transmittance of the optical filter unit on the basis of the photography environment; and an image processing unit for synthesizing and processing multiple captured images.

Claims24

Dependent claims

A multi-luminosity image acquiring device comprising:

a camera unit configured to shoot a predetermined subject and acquire an image;
a lighting unit around the camera unit, the lighting unit including a first infrared lamp configured to modulate and emit infrared light depending on a distance from the subject, and a second infrared lamp configured to modulate and emit infrared light depending on an illuminance environment;
an optical filter unit on a front surface of the camera unit and configured to adjust a transmission amount of light incident on the camera unit;
a lamp controller configured to control the first infrared lamp to modulate the infrared light based on the distance from the subject;
a luminosity multiplexing unit configured to generate an optical multiplexing signal that modulates the infrared light of the second infrared lamp and controls a transmittance of the optical filter unit based on the illuminance environment;
and
an image processing unit configured to fuse and process multiple images.

4 more elements

A method of acquiring a multi-luminosity image of a multi-luminosity image acquiring device including a camera unit, a lighting unit including a first infrared lamp and a second infrared lamp, a lamp controller, an image processing unit, and a luminosity multiplexing unit, the method comprising:

a step in which the luminosity multiplexing unit checks whether an image shooting request is received;
a step in which the luminosity multiplexing unit acquires ambient illuminance information when the image shooting request is received;
a step in which the luminosity multiplexing unit calculates an optical multiplexing signal function for controlling a transmittance of an optical filter unit or an optical multiplexing signal function for controlling an infrared light modulation of the second infrared lamp based on the ambient illuminance information to generate an optical multiplexing signal;
a step in which a day/night switch is switched to a day mode or a night mode depending on the ambient illuminance information so that
when the day/night switch is switched to the day mode, the optical filter unit modulates a transmittance of light incident in response to the optical multiplexing signal, and
when the day/night switch is switched to the night mode, the second infrared lamp modulates and emits infrared light in response to the optical multiplexing signal and the first infrared lamp modulates and emits infrared light correspondingly to a distance from a subject in response to a control signal of the lamp controller;
a step in which the camera unit shoots multi-luminosity images for time required to modulate the transmittance of the optical filter unit or for time required to modulate and emit the infrared light of each of the first and second infrared lamps;
and
a step in which the image processing unit fuses and processes the multi-luminosity shooting images.

6 more elements

Dependencies are inferred from the claim text.

Device and method for acquiring multi-luminosity images

Life of this patent

Device and method for acquiring multi-luminosity images

Life of this patent

Abstract

Claims24