Living body recognition device, living body recognition method, and living body recognition program

Abstract

A living body determination device includes: a light irradiation device that irradiates a measuring object with a first light including a plurality of spectrums; a spectroscopic device that disperses a light at intensity depending on a wavelength and outputs the light; an image acquisition device that receives the light output by the spectroscopic device and outputs image information representing brightness depending on the intensity of the light; and a control unit. The control unit, for each spectrum of the first light, acquires image information with respect to the measuring object from the image acquisition device, based on the image information, selects one or more areas, for each of the areas, acquires spectroscopic information, and based on whether the spectroscopic information satisfies a predetermined condition, determines whether the measuring object is a living body.

What is claimed is: 
     
         1 . A living body determination device comprising:
 a light irradiation device that irradiates a measuring object with a first light including a plurality of spectrums;   a spectroscopic device that disperses a light at intensity depending on a wavelength and outputs the light;   an image acquisition device that receives the light output by the spectroscopic device and outputs image information representing brightness depending on the intensity of the light; and   a control unit that,
 for each spectrum of the first light, acquires image information with respect to the measuring object from the image acquisition means, device, 
 based on the image information, selects one or more areas, for each of the areas, 
 acquires spectroscopic information, and 
 based on whether the spectroscopic information satisfies a predetermined condition, determines whether the measuring object is a living body. 
   
     
     
         2 . The living body determination device according to  claim 1 ,
 wherein the light irradiation device includes an irradiation position control unit that controls an irradiation position of the first light based on the area.   
     
     
         3 . The living body determination device according to  claim 1 ,
 wherein the control unit,
 in a state where the light irradiation device is turned off, acquires first spectroscopic image information including spectroscopic information for each of the areas, 
 in a state where the light irradiation device is lighted, acquires second spectroscopic image information including spectroscopic information for each of the areas, and 
 based on the first and second spectroscopic image information, 
   determines whether the measuring object is a living body.   
     
     
         4 . The living body determination device according to  claim 1 , further comprising: a target installation unit that places a position of the measuring object within a predetermined range,
 wherein the target installation unit includes a reference unit that reflects an incident light without changing a spectrum, and   wherein the control unit,
 for each spectrum of the first light, acquires image information with respect to the reference unit from the image acquisition device, 
 based on the image information, acquires spectroscopic information of the reference unit, and 
 based on spectroscopic information for each of the areas and spectroscopic information of the reference unit, determines whether the measuring object is a living body. 
   
     
     
         5 . The living body determination device according to  claim 1 , further comprising: a target installation unit that places a position of the measuring object within a predetermined range,
 wherein the control unit,
 in a state where the measuring object is not present in the target installation unit, acquires first spectroscopic image information including spectroscopic information for each of the areas, 
 in a state where the measuring object is present in the target installation unit, acquires second spectroscopic image information including spectroscopic information for each of the areas, and 
 based on the first and second spectroscopic image information, 
   determines whether the measuring object is a living body.   
     
     
         6 . A living body determination method for a living body determination device that comprises a light irradiation device that irradiates a measuring object with a first light including a plurality of spectrums, a spectroscopic device that disperses a light at intensity depending on a wavelength and outputs the light, and an image acquisition device that receives the light output by the spectroscopic device and outputs image information representing brightness depending on the intensity of the light, the living body determination method comprising:
 for each spectrum of the first light, acquiring image information with respect to the measuring object from the image acquisition device;   based on the image information, selecting one or more areas and for each of the areas, acquiring spectroscopic information; and   based on whether the spectroscopic information satisfies a predetermined condition, determining whether the measuring object is a living body.   
     
     
         7 . A non-transitory computer readable medium storing a living body determination program for causing a computer of a living body determination device comprising a light irradiation device that irradiates a measuring object with a first light including a plurality of spectrums, a spectroscopic device that disperses a light at intensity depending on a wavelength and outputs the light, and an image acquisition device that receives the light output by the spectroscopic device and outputs image information representing brightness depending on the intensity of the light, to execute the processes of:
 for each spectrum of the first light, acquiring image information with respect to the measuring object from the image acquisition device;   based on the image information, selecting one or more areas and for each of the areas, acquiring spectroscopic information; and   based on whether the spectroscopic information satisfies a predetermined condition, determining whether the measuring object is a living body.   
     
     
         8 . (canceled) 
     
     
         9 . (canceled) 
     
     
         10 . (canceled)