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Seam measuring of complex tight butt joint without misalignment for laser welding is a challenging problem. The allowable seam gap width and misalignment in laser welding process are less than 0.1 mm for thin sheet around 2 mm thickness. Current measuring methods or sensors can not stably and accurately extract 3D seam position and seam gap width, due to narrow seam gap and too little misalignment...
Panorama imaging camera, as an effective tool, has been applied widely to geological prospecting. But there exist distortions in imaging the geological object, especially prospecting excavation, owing to the shortcoming of lens. In addition, the traditional correction methods are too complex to obtain the actual applications. This paper proposes a correction method based on straight baseline, which...
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