Method for looking up four boundaries of cadastral parcel by boundary points and 45-degree bounding rectangles

Abstract

The invention discloses a method for looking up four boundaries of a cadastral parcel by boundary points and 45-degree bounding rectangles. On the basis of the cadastral parcel, demarcation points respectively nearest to the southwest, southeast, northeast and northwest of the cadastral parcel by the 45-degree separated bounding rectangles, four demarcation points cut the boundaries of the land parcels to form east, west, south and north boundary discrimination lines, topological look-up is conducted according to the adjacency relationship of the adjacent cadastral parcels, and attributes of the four boundaries of the cadastral parcels can be determined reasonably and completely. The method has the advantages that defects of existing methods are overcome, manual judgment is replaced, look-up efficiency for the four boundaries of the land parcels is improved greatly, time and labor costs are saved, high accuracy of look-up results of the four boundaries is ensured, and requirements of land right confirmation are met completely.

Description

technical field [0001] The present invention relates to the technical field of basic geographic information data processing. Specifically, it is a method for searching four-distance parcels by using boundary points and 45° circumscribed rectangles. The method can be applied to the internal data processing process in the later stage of land right confirmation Especially the filling process of the four attributes. Background technique [0002] A parcel of land refers to a closed plot composed of ownership boundaries, which is a piece of land with definite boundaries and definite ownership on the surface of the earth. Boundary point refers to the turning point of the parcel ownership boundary, that is, the inflection point. It is an important symbol to demarcate the ownership boundary of the parcel. The four directions of a parcel of land refer to the boundary line between the four directions of a parcel of land and the adjacent land. Generally, fill in the names of the adjac...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing land parcel search methods are manual identification. Manually filling the attributes of the four destinations into the attribute table is a heavy workload and inefficient

There are also ways to use positive circumscribed rectangle buffering and azimuth search, but the calculation is relatively cumbersome, and the accuracy of judging adjacent parcels with some special shapes is not high

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