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It is vital to assess the lives of newly developed products by using failure data from various testing environments. In the current methods, two steps are generally included. The first step is transforming the failure data under one testing environment into the actual working environment, and the second step is integrating all failure data under the actual working environment into a unified result...
Detection of tool wear is vital for the deep-hole drilling, because it can help increasing manufacturing productivity and decreasing tool cost. This paper uses the drilling noise to establish the BTA tool wear condition monitoring system in order to monitor the tool wear condition. After the improved Empirical Mode Decomposition (EMD) method is used to do the modal decomposition for noise signal which...
The existing distortion correction methods are not fully suitable the multi-distortion image of Data Matrix symbol directly marked on cylinder surface, so an ellipse-arc grid method is proposed to correct this kind of distortion image. Firstly, two ellipse-arc boundaries and two line boundaries are detected based on the symbol contour point set, Secondly, two groups of ellipse-arc and line are interpolated...
Directly marking tool encoding information in Data Matrix symbol is a good means to realize its effective inventory control and working process supervision in a digital workshop. How to quickly and correctly identify the information is the key of the tool lifecycle management. The paper puts forward a set of identification method on tool encoding information and has achieved it, and in detail explains...
In order to be in favor for image registration and mosaic in computer vision, a planar rectification on epipolar geometry is studied, which minimizes the deformation including the projection distortion and the resampling effect. Firstly, a pair of images is normalized to simplify fundamental matrix, and the geometric constraint is applied to simplify rectification transform matrix. Secondly, the extremum...
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