Object recognition apparatus using spectrometer and method thereof

An apparatus for recognizing an object using a multi-wavelength spectrometer, the apparatus comprising:

• an image processing unit configured to extract a region of interest from an input three-dimensional image and output shape information on the region of interest;
• a light irradiation unit configured to irradiate light of a plurality of wavelengths to an arbitrary position of an object corresponding to the detected region of interest;
• a light receiving unit configured to measure a spectrophotometric value of light of first and second wavelengths for a first light irradiation position, and measure a spectrophotometric value of light of first and second wavelengths for a second light irradiation position;
• and
• a light processing unit configured to calculate a first differential spectrophotometric value between the light of the first wavelength and the light of the second wavelength for the first light irradiation position, calculate a second differential spectrophotometric value between the light of the first wavelength and the light of the second wavelength for the second light irradiation position, and generate a differential spectrophotometric map using a correlation between the first differential spectrophotometric value and the second differential spectrophotometric value.

A method for recognizing an object using a multi-wavelength spectrometer, the method comprising:

• extracting a region of interest from an input three-dimensional image and outputting shape information on the region of interest;
• irradiating light of a plurality of wavelengths to an arbitrary position of an object corresponding to the detected region of interest;
• measuring a spectrophotometric value for each light of the plurality of wavelengths;
• generating a differential spectrophotometric map using a differential value between spectrophotometric values of different wavelengths measured at the same light irradiation position;
• and
• recognizing the object using the differential spectrophotometric map.