作者: John F. Shakespeare , Markku M. Kellomaki
DOI:
关键词: Digital image 、 Operator (computer programming) 、 Distribution (mathematics) 、 Integer (computer science) 、 Orientation (computer vision) 、 Mathematics 、 Image (mathematics) 、 Optics 、 Fiber orientation
摘要: An image-based measurement technique that directly measures the orientation of fibers in a moving web comprises nonwoven material angles individual so more robust estimate statistical distribution is obtained. The includes steps of: (a) illuminating an area on at least one side with radiation; (b) obtaining digital image illuminated area; and (c) calculating fiber by processing gradient operator thereby analyzing observed within image. preferably non-integer order between ⅓ ⅔ particularly ¼ ¾. use fractional-gradient operators yields reliable results than when integer gradients are employed.