An apparatus for and method of sorting objects using...

G - Physics – 01 – N

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G01N 21/87 (2006.01) B07C 5/342 (2006.01) G01N 15/02 (2006.01) G01N 21/85 (2006.01)

Patent

CA 2587728

An apparatus for and method of identifying and sorting target particles using reflectance spectroscopy in the visible (VIS) to the near infrared (NIR) spectral range, are disclosed. In one version, a hyperspectral imaging apparatus (10) is used to identify and sort target particles within a batch of particles, the apparatus comprising a tray (12) for supporting the batch of particles, leveling means for leveling the batch of particles into substantially a monolayer, a hyperspectral scanning system (14) for scanning the batch of particles, to produce a hyperspectral image of the batch of particles, a classifier for determining the pixel coordinates of target particles in the hyperspectral image, converter means for converting the pixel coordinates to world coordinates of the target particles on the tray (12), and target particle extraction means (16) for picking the target particles based on the calculated world coordinates and for transferring the picked target particles to a storage arrangement (18).

Cette invention concerne un appareil et un procédé pour identifier et trier des particules cibles au moyen d~une spectroscopie par réflectance dans la gamme spectrale visible (VIS) à proche infrarouge (NIR). Dans une version, un appareil d~imagerie en hyperespace spectral (10) sert à identifier et trier des particules cibles au sein d~un lot de particules. L~appareil comprend un plateau (12) pour y placer le lot de particules, un moyen d~arasement pour le niveler en une couche sensiblement uniforme, un système d~analyse en hyperespace spectral (14) pour analyser le lot et en produire une image en hyperespace spectral, un classificateur pour déterminer les coordonnées de pixel des particules cibles dans l~image, un convertisseur pour convertir ces coordonnées en coordonnées universelles sur le plateau (12) et un moyen d~extraction (16) pour sélectionner les particules cibles en fonction des coordonnées universelles calculées et les transférer à un dispositif de stockage (18).

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