Patent
Fuzzy matching method for photogrammetry of port crane
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TLDR
In this article, a fuzzy matching method for the photogrammetry of a port crane is presented, which includes the steps of calculating coordinates of an image plane coordinate system of each to-be-measured point as a key point according to an estimated parametric model and left and right exterior orientation elements.Abstract:
The invention discloses a fuzzy matching method for photogrammetry of a port crane. The fuzzy matching method for the photogrammetry of the port crane includes the steps of: calculating coordinates ofan image plane coordinate system of each to-be-measured point as a key point according to an estimated parametric model and left and right exterior orientation elements; respectively getting a simulated left photo to-be-measured point distribution map and a simulated right photo to-be-measured point distribution map according to the calculated plane coordinates of each to-be-measured point in theimage plane coordinate system; conducting a point screening process based on geometric relationship matching, which includes first adopting a feature recognition operator to obtain automatic recognition point maps of left and right photos, first filtering range according to preset matching point fuzzy recognition radius, and then using geometric constraint to select points to obtain a projectionpoint of an object point in the image plane coordinate system; determining whether a match exists; changing the matching point fuzzy recognition radius to expand the selection range when no result output occurs, and returning to iteration until matching results are acquired. The fuzzy matching method for the photogrammetry of the port crane has the advantage of solving special and complex environmental problems of port crane photography.read more
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References
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