题目

英语翻译
Once you get a decent low density point cloud,you are ready to move on to denser point cloud and the meshing steps.See ‘Densify your Point Cloud’ section below.
However,if you find it difficult to find an appropriate depth range,and your DSM’s consistently result in a lot of noise and/or gaps etc,you may need to ‘build-up’ an implicit base surface.With a implicit base surface that better matches the true shape,your DSM will usually solve better,due to a smaller required depth range.On a face for example,you might want to mark and reference points on the tip of the nose,around the eyes,and on the cheeks and chin in order to get a closer base/approximate surface.The Help file discusses the implicit surface in more detail.
This image shows a few points marked on the face.Once referenced on other photos,the points 3D positions will be used by PMScanner to build up an ‘internal’ base surface.You won’t be able to see this base surface,but PMScanner will use it as a guide whe

提问时间：2020-07-24

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