#arkit #arcore #hololens #measure #pointcloud #augmentedreality #SLAM Large distances between the AR device and the object (feature) points cause too small parallaxes between frames resulting in the needle-shaped distributions of point cloud. The needle-shaped (i.e., extruded) distribution of point cloud is mapped (projected, viewed) to the vicinity of an image (feature) point from the viewpoint of AR device. The deviation of points (i.e., the length of needle) is increasing exponentially to the object distance. Google ARCore extracts feature points even from the clouds in the sky, while Apple ARKit extracts feature points only from max 10 m distant object surfaces. The far distance feature points are indispensable to the large-scale positioning and orientation. Tools used: - Samsung Galaxy Note 9 - Google ARCore 1.9 - OpenGL ES 3.1 - CurvSurf FindSurface. 3-D, least squares, analytic geometry, differential geometry, principal curvature, principal direction, fitting, curve, surface, orthogonal distance fitting, robust fitting, point cloud, segmentation, region growing, outlier elimination, object recognition, reverse engineering, CAD CAM, BIM, augmented reality, occlusion, laser scanner, curve fitting, surface fitting, plane fitting, sphere fitting, cylinder fitting, cone fitting, torus fitting, piping, reducer, elbow, box, cuboid, radius, length, size, position, location, orientation, pose, rotation, axis, software, ISO 10360-6, ARKit, ARCore, HoloLens, RealSense, FindSurface
Far Distance Small Parallax - ARCore - YouTube |
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| Science & Technology Creative Commons Attribution licence (reuse allowed) | Upload TimePremiered on 17 Jun 2019 |
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