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Orru, C. (author), Blom, A. (author), Chavarrias Borras, V. (author), Ferrara, V (author), Stecca, G. (author)We present a new image analysis technique for measuring the grain size distribution (texture) of the bed surface during flow in a laboratory experiment. A camera and a floating device are connected to a carriage used to take images of the bed surface over the entire flume length. The image analysis technique, which is based on color segmentation...journal article 2016