| 摘要 |
A vision system for viewing the end face 62 of a product mounted in a machine, and which in use produces measurements relating to the area of the end face and of at least one constituent part of the product which is visible in the end face (e.g. lean/fat ratio of a piece of meat), comprises means for illuminating a region containing the end face and means 78 for producing images of the illuminated region. The region is illuminated consecutively using first one and then the other of two strobed light sources. One is a laser line source 58, 60 which in use produces a structured pattern of parallel lines of light, and the other, 50, illuminates the region in a generally uniform manner, thereby to produce two images of the region. Information on the size and shape of the product end face is determined by processing an image captured under illumination with the structured light source. The vision system forms part of a product slicing machine and the measurements and/or dimensional values obtained from the images are sent to a slicer controller, to control the thickness of the next slice to be cut. A method of assessing an end face of a product which is to be sliced, and routing the slice according to the assessment, is also disclosed. |
