Object imaging system

G - Physics – 01 – N

Patent

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Details

G01N 21/25 (2006.01) G01N 21/84 (2006.01) G03B 15/07 (2006.01)

Patent

CA 2378739

An object imaging system, particularly for slaughtered animal carcases or meat pieces, includes an imaging station to which the object (10) is introduced, a camera (20) at the imaging station, and lighting means (30). The imaging station includes a backing member (15) for providing a background for the object (10), and an image capture enclosure (21) which has an open side (22) facing towards the backing member (15), the inside surfaces of the enclosure (21) being non-reflective. The camera (20) is mounted in the enclosure (21) and faces towards the open side (22) and towards the backing member (15). The lighting means (30) includes multiple light sources (31), some of the light sources (35, 36, 37) being provided inside the image capture enclosure (21) and located so asto face towards the open side (22) thereof and some of the light sources (32, 33, 34) being provided outside the enclosure to face towards the backing member (15), the light sources (31) being located at points which define an imaginary concave surface (38) with the concavity facing towards and being generally focussed on a region where the object (10) is introduced for imaging. The camera (20) has an associated camera housing (40) completely enclosing the camera in a sealed environment, the housing (40) having an associated temperature control means (45) operative to maintain a predetermined temperature or temperature range for the camera (20).

L'invention concerne un système de formation d'images d'objets, notamment de carcasses d'animaux abattus ou de morceaux de viande, le système comprenant un poste de formation d'images dans lequel l'objet (10) est placé, une caméra (20) disposée dans le poste de formation d'images et un dispositif (30) d'éclairage. Le poste de formation d'images comprend un élément (15) de support destiné à fournir un arrière-plan pour l'objet (10) et une enceinte (21) de capture d'image possédant un côté (22) ouvert faisant face à l'élément (15) de support, les surfaces intérieures de l'enceinte (21) étant non réfléchissantes. La caméra (20) est montée dans l'enceinte (21) et fait face au côté (22) ouvert et à l'élément (15) de support. Le dispositif (30) d'éclairage comprend plusieurs sources (31) lumineuses, certaines (35, 36, 37) des sources lumineuses se trouvant à l'intérieur de l'enceinte (21) de capture d'images et étant disposées de manière à faire face au côté (22) ouvert de l'enceinte, et d'autres (32, 33, 34) sources lumineuses se trouvant à l'extérieur de l'enceinte de manière à faire face à l'élément (15) de support. Les sources (31) lumineuses sont disposées à des points définissant une surface (38) concave imaginaire, la concavité faisant face à une zone sur laquelle elle se focalise en général, zone dans laquelle on introduit l'objet (10) dont on doit former des images. La caméra (20) comporte un boîtier (40) de caméra associé, entourant complètement la caméra dans un environnement clos, le boîtier (40) comportant un dispositif (45) de régulation de température associé, destiné à maintenir la caméra (20) à une température ou dans une plage de températures prédéterminée.

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