| 摘要 |
<p>The invention relates to electronic control of a crop shear for trimming the head and tail of a bar. The bar is scanned longitudinally by a camera to monitor its progress towards the crop shear. The bar is also scanned transversely by a second camera connected to a processor which analyses the shape of the bar to determine the optimum point for cropping. The method is also described for distinguishing between the outline of a bar and surface anomalies such as may be caused by water or scale on the bar.</p> |
