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 Due to the fast running speed of high-speed trains, the wheel-rail surface is relatively smooth and there are no obvious feature points, which brings great challenges to the 3D reconstruction based on feature point extraction.
 
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 3D reconstruction technology is an important branch of computer vision technology and a popular research direction combining computer vision and computer image graphics. According to whether it is in contact with the measured object during measurement, it can be divided into contact measurement and non-contact measurement.
 
 <div class="imgs" align="center" ><img src="https://5618.oss-cn-beijing.aliyuncs.com/wordpress/image/00/18.png" alt="16" width="50%" height="50%"/></div>
diff --git a/Readme.md b/Readme.md
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 由于高铁列车运行速度快，轮轨表面相对光滑且无明显特征点，给基于特征点提取的三维重建带来了极大挑战。
 
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 三维重建技术是计算机视觉技术的一个重要分支，是计算机视觉和计算机图像图形学相结合的一个热门研究方向。根据测量时是否与被测物体接触，可分为接触式测量和非接触式测量。
 
 <div class="imgs" align="center"><img src="https://5618.oss-cn-beijing.aliyuncs.com/wordpress/image/00/17.png" alt="17" width="50%" height="50%"/></div>