Photogrammetric networks for positional accuracy
First Claim
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1. A method of surveying objects, the method comprising:
- with a mobile survey system, collecting capture point data at at least two capture points corresponding to mobile survey system positions, the capture point data including three non-collinear reference points operable to orient the capture point data, the reference points corresponding to objects surveyed by the mobile survey system;
calculating the positions of the at least two capture points and the positions of the reference points relative to the position of the corresponding capture point;
correlating the reference points to identify correlated reference points;
weighing the positions of the correlated reference points based on error functions computed for each of the at least two capture points to determine correlation points; and
recalculating the positions of the at least two capture points so that the weighed positions of the reference points match the correlation points.
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Abstract
The present invention involves a surveying system and method which determines the position of an object point using two images. First, at least two reference points appearing on the two images are correlated. Then the position of the object point is determined based on the two images and the two reference points.
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Citations
20 Claims
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1. A method of surveying objects, the method comprising:
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with a mobile survey system, collecting capture point data at at least two capture points corresponding to mobile survey system positions, the capture point data including three non-collinear reference points operable to orient the capture point data, the reference points corresponding to objects surveyed by the mobile survey system; calculating the positions of the at least two capture points and the positions of the reference points relative to the position of the corresponding capture point; correlating the reference points to identify correlated reference points; weighing the positions of the correlated reference points based on error functions computed for each of the at least two capture points to determine correlation points; and recalculating the positions of the at least two capture points so that the weighed positions of the reference points match the correlation points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A machine-readable product comprising a machine-readable memory having instructions stored therein operable to cause a computing device to perform a method of surveying objects with a mobile survey system, the method comprising:
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collecting capture point data at at least two capture points corresponding to mobile survey system positions, the capture point data including three non-collinear reference points operable to orient the capture point data, the reference points corresponding to objects surveyed by the mobile survey system; calculating the positions of the at least two capture points and the positions of the reference points relative to the position of the corresponding capture point; correlating the reference points to identify correlated reference points; weighing the positions of the correlated reference points based on error functions computed for each of the at least two capture points to determine correlation points; and recalculating the positions of the at least two capture points so that the weighed positions of the reference points match the correlation points. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system for surveying objects, the system comprising:
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a mobile survey system comprising sensory devices supported by the mobile survey system and configured to collect capture point data at at least two capture points corresponding to mobile survey system positions, the capture point data including three non-collinear reference points operable to orient the capture point data, the reference points corresponding to objects surveyed by the mobile survey system; and a computing device communicatively coupled to the mobile survey system and configured to; calculate the positions of the at least two capture points and the positions of the reference points relative to the position of the corresponding capture point; correlate the reference points to identify correlated reference points; weigh the positions of the correlated reference points based on error functions computed for each of the at least two capture points to determine correlation points; and recalculate the positions of the at least two capture points so that the weighed positions of the reference points match the correlation points. - View Dependent Claims (18, 19, 20)
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Specification