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US 2015/0092180 A1Published application
Measuring Method And Measuring Instrument
AssigneeTopcon Corporation
InventorNobuyuki Nishita
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AssigneeTopcon Corporation
InventorNobuyuki Nishita
Estimating the term…
The invention provides a measuring method for performing monitoring measurement on two or more objects to be measured by a measuring instrument, which comprises a telescope unit for sighting an object to be measured, a distance measuring unit for projecting a distance measuring light through the telescope unit and for measuring a distance to the object to be measured, an image pickup unit for taking an image in sighting direction and for acquiring a digital image, an angle detecting unit for detecting a directional angle in the sighting direction of the telescope unit, and an automatic sighting unit for making the telescope unit perform an automatic sighting to the object to be measured, comprising a step of rotating the telescope unit in horizontal direction and in vertical direction and of scanning a predetermined range being set up so as to include two or more objects to be measured, a step of acquiring digital images at a predetermined time interval so that there are two or more images which include the same object to be measured while scanning, a step of detecting an image of the object to be measured in the digital image and of setting up a minimal rectangle surrounding the image of the object to be measured, a step of overlapping the minimal rectangles obtained in two or more digital images and of carrying out integrated processing to obtain positions of the objects to be measured in the image, a coarse measurement step of calculating a composite directional angle of each of the objects to be measured respectively based on a position in the image obtained by integrated processing and on a directional angle of a sighting axis, and a step of associating the composite directional angle obtained by the coarse measurement with each of the objects to be measured and of storing the composite directional angle as target values for automatic sighting.
A measuring method for performing monitoring measurement on two or more objects to be measured by a measuring instrument, which comprises a telescope unit for sighting an object to be measured, a distance measuring unit for projecting a distance measuring light through said telescope unit and for measuring a distance to said object to be measured, an image pickup unit for taking an image in sighting direction and for acquiring a digital image, an angle detecting unit for detecting a directional angle in the sighting direction of said telescope unit, and an automatic sighting unit for making said telescope unit automatic sighting to said object to be measured, comprising a step of rotating said telescope unit in horizontal direction and in vertical direction and of scanning a predetermined range being set up so as to include two or more objects to be measured, a step of acquiring digital images at a predetermined time interval so that there are two or more images which include the same object to be measured while scanning, a step of detecting an image of the object to be measured in said digital image and of setting up a minimal rectangle surrounding the image of the object to be measured, a step of overlapping said minimal rectangles obtained in two or more digital images and of carrying out integrated processing to obtain positions of said objects to be measured in the image, a coarse measurement step of calculating a composite directional angle of each of the objects to be measured respectively based on a position in the image obtained by integrated processing and on a directional angle of a sighting axis, and a step of associating said composite directional angle obtained by said coarse measurement with each of the objects to be measured and of storing said composite directional angle as target values for automatic sighting.
A measuring instrument, comprising a telescope unit for sighting an object to be measured, a distance measuring unit for measuring a distance to said object to be measured by projecting a distance measuring light through said telescope unit, an image pickup unit for taking an image in sighting direction and for acquiring a digital image, an angle detecting unit for detecting a directional angle in the sighting direction of said telescope unit, an automatic sighting unit for making said telescope unit perform an automatic sighting to said object to be measured, an arithmetic processing part and a storage part, wherein said arithmetic processing part makes said telescope unit rotate in horizontal direction and in vertical direction and perform scanning over a predetermined range so as to include two or more objects to be measured, and while scanning by said image pickup unit, acquires digital images at a predetermined time interval so that there will be two or more images which include the same object to be measured, detects images of objects to be measured in said digital images, sets up a minimal rectangle surrounding the images of the objects to be measured, overlaps said minimal rectangle obtained in two or more digital images and carries out integrated processing to obtain positions of said objects to be measured in the image and calculates a composite directional angle of each of the objects to be measured respectively based on a position in the image obtained by integrated processing and on a directional angle of a sighting axis and associates a composite directional angle of said object to be measured to said object to be measured and stores to said storage part as a target value for automatic sighting.
Dependencies are inferred from the claim text.