Surveying system with image-based measuring

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United States of America Patent

PATENT NO 11566896
APP PUB NO 20210055102A1
SERIAL NO

16548688

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Abstract

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A method for image-based point measurement includes moving a surveying system along a path through a surrounding and capturing a series of images of the surrounding. A subset of images are defined as frames and a subset of frames are defined as key-frames. Textures are identified in first and second frames and are tracked in successive frames to generate first and second frame feature lists. A structure from motion algorithm is used to calculate camera poses for the images based on the first and second frame feature lists. Corresponding image points in images of the series of images are identified using feature recognition in at least a plurality of images. Three-dimensional coordinates of the selected image point are determined using forward intersection with the poses of the subset of images in which corresponding image points are identified. The three-dimensional coordinates of the selected image point are presented to the user.

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Patent Owner(s)

Patent OwnerAddress
LEICA GEOSYSTEMS AGHEINRICH-WILD-STRASSE 201 HEERBRUGG CH-9435

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Metzler, Bernhard Dornbirn, AT 76 1626
Richter, Bernhard Hard, AT 16 126
Török, Zoltán Berneck, CH 10 26
Van, Der Zwan Elmar Vincent Walzenhausen, CH 17 326

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