3D reconstruction is difficult to use in general applications because it treats objects as a whole without distinction. Post-processing to segment them into individual objects is essential. However, when the reconstruction target is a large-scale area, it is difficult to segment directly from the 3D geometry because it is divided into small rectangular tiles for convenience. We propose a method that can accurately classify and segment objects even in the case of locally divided 3D tiled geometry. Instead of using 3D segmentation, we adopt the method of 2D instance segmentation of a global multi-view image and then projecting it onto the 3D geometry. This solves the problem that objects located on the boundaries of tiles are fragmented and not properly segmented.
KSP Keywords
3D Reconstruction, 3D Segmentation, 3D geometry, 3D object, Object classification, Post-Processing, large-scale, multi-view images
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