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Development of a Software Application for Refinement of Cadastral Maps for Preserving Legal Areas and Perimeter Lengths without Interference
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Alireza Safdarinezhad *   |
| Tafresh University |
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Abstract: (709 Views) |
Field surveying, large-scale aerial maps, or digitizing paper maps are considered as sources of spatial information in the legal registration of real estate and cadaster systems. The uncertainties related to extracting the spatial information from each of these sources create inconsistencies with registered legal-geometrical contents. The differences between the boundary lengths and areas of the cadastral parcels(s) with the registered documents are examples of such interferences. When the geometric entries are correct, aligning the cadastral maps with these legal propositions is one of the technical tasks taken by the surveying experts and registry affairs. In this process, the positions of the vertices of the cadastral parcels are manually adjusted in such a way that, without causing interference among the cadastral parcels, the legally registered areas and boundaries match the existing maps. The quality of this procedure depends on the expert’s experience and patience, and uniform results do not occur upon the repetition of this process. In this research, an interactive application has been developed to refine the initial maps from the cadastral parcel(s) with the aim of matching them with the legally registered boundaries and areas. In this method, the existing cadastral maps are used as the basis for extracting observations and the registered geometric contents as constraints in the refinement process of the parcel(s) vertices. This application allows imposing various geometric constraints, including preserving the parcels’ area, preserving all or part of their boundary’s length, collinearity of some vertices, and also fixing some directions and points. Utilizing this method can simplify the operational tasks related to the cadastral affairs and surveyors. It can also prevent the need for tedious manual refining procedures. The results demonstrated that the initial cadastral maps were refined with greater accuracies than the map scale uncertainties and the surveying tools. Another technical feature of this application is its ability to be used in the process of separating and dividing land, which has been proven effective in various examples.
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| Keywords: Cadaster map, Map refinement, Parcel fixing, Separation, Registered boundary length and area, Property documents |
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Full-Text [PDF 1694 kb]
(111 Downloads)
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Type of Study: Research |
Subject:
Surveying Engineering
Received: 2024/10/1 | Accepted: 2025/01/4 | ePublished ahead of print: 2025/02/2 | Published: 2025/03/17
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