Patent ID: 9224197
Filing Date: 2015-12-29
Classification: G06T

Abstract:
1. A method for identifying defects in a surface of a roll component, comprising: mounting a roll component in an apparatus to facilitate rotating the roll component about a lengthwise axis of the roll component with respect to a spanwise scanner array extending along an entirety of the lengthwise axis of the roll component; adjusting an angle between the lengthwise axis of the roll component and the spanwise scanner array to maximize a specular response in the spanwise scanner array in an imaging operation; executing the imaging operation by scanning a surface of the roll component with the spanwise scanner array through a single complete rotation of the roll component with respect to the spanwise scanner array; developing, with a processor, an overall image of the surface of the roll component; applying, with the processor, an analysis algorithm to analyze the image of the surface of the roll component to detect a presence of a periodic surface defect in the image of the surface roll component; and outputting an indication of the presence of the periodic surface defect on the surface of the roll component based on the analysis of the image.