扫描的对齐

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Alan讨论 | 贡献2018年4月4日 (三) 00:57的版本
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要在PhoXi控制应用程序中对齐多个扫描,使用标记图案很有用。

下载图案


重要提示:以100%比例打印图案。

如何将坐标空间设置为标记空间

  1. Open PhoXi Control App and connect to the scanner
  2. In the options pane on the left, check following options in group Coordinates:
    • MarkersSettings > InvertedMarkers
    • RecognizeMarkers
    • CoordinateSpace = MarkerSpace
  3. Put marker plate in the view of camera. Make sure camera sees at least four marker circles, then trigger the scan. Point cloud will be returned in coordinate system of marker plate.
  1. 打开PhoXi控制应用程序并连接到扫描仪
  2. 在左侧的选项窗格中,检查Coordinates群组中的以下选项:
    • MarkersSettings > InvertedMarkers
    • RecognizeMarkers
    • CoordinateSpace = MarkerSpace
  3. 把标记图板放在相机的视野中。确保相机至少看到四个标记圆圈,然后触发扫描。点云将会以标记图板的坐标系回传。


如何创建物体的模型

  1. Put the object above the marker plate and switch the coordinate space to Marker space. You can now move the scanner to different locations, it always returns the point cloud in the same coordinate system defined by marker plate.
  2. Make several scans from different angles to capture the object from all sides. Save each scan to PLY file.
  3. Open all PLY files in 3D point cloud viewer, e.g. Meshlab or Cloud Compare, crop the desired object, use some fine alignment algorithm (ICP), merge the point clouds and polygonize it to create a surface model.
  1. 将物体放在标记板上方,并将坐标空间切换到标记空间。您现在可以将扫描仪移动到不同的位置,它总是以标记板定义的相同坐标系返回点云。
  2. 从不同角度进行多次扫描,从各个方向捕捉对象。将每个扫描保存到PLY文件。
  3. 在3D点云查看器中打开所有PLY文件,例如Meshlab或云比较,裁剪所需的对象,使用一些精细的对齐算法(ICP),合并点云并多边形化以创建表面模型。

问题

Image corrupted
If the application does not return the scan and there is a message in the status bar "Image corrupted", make sure the angle between the scanner and marker plate is not too small and that the camera can see at least 4 marker circles.
图像已损坏
如果应用程序未返回扫描并且状态栏中出现“图像已损坏”的消息,请确保扫描仪和标记板之间的角度不能太小,并且相机至少可看到4个标记圆圈。