Wire rope measuring device and wire rope measuring method
AssigneesMeidensha Corporation, Otis Elevator Company
InventorsYoshiki Nota, Yusuke Watabe, Mitsuru Kato, Ryuji Onoda, Hirotomo Tanaka, Takashi Takeuchi
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Abstract
A wired-rope measuring device, provided with two cameras 1, 2 that shoot one or no less than two wired ropes 8 from different directions and an analyzing device 5 that analyzes image data that is an image shot by the two cameras 1, 2, wherein the analyzing device 5 applies the principle of triangulation by a stereo method to the image data to seek a center coordinate P0 of the wired rope 8 relative to the cameras 1, 2 and volumetric anamorphosis is corrected when calculating a diameter D of the wired rope 8 based on the center coordinate P0 of the wired rope 8.
Claims6
A wired-rope measuring device, comprising:
- two cameras that shoot one or no less than two wired ropes from different directions;
- and
- an analyzing device that analyzes image data that is an image shot by the two cameras;
- wherein
- the analyzing device applies the principle of triangulation by a stereo method to the image data to seek coordinates of the wired rope relative to the cameras, and
- volumetric anamorphosis is corrected when calculating a diameter of the wired rope based on the coordinates of the wired rope.
A wired-rope measuring method, comprising the steps of:
- shooting by two cameras one or no less than two wired ropes from different directions;
- seeking coordinates of the wired rope relative to the cameras by the principle of triangulation by a stereo method by analyzing image data that is a shot image;
- and
- correcting volumetric anamorphosis when calculating a diameter of the wired rope based on the coordinates of the wired rope.
Dependencies are inferred from the claim text.