Role of modern technology in developing cadastral LIS


Apart from the above-discussed tasks, GIS can have the facility of geo-referencing the present digital data that would enable the user to visualize the results in real world coordinate system (Latlon/meters/feet). Once a village level map is geo-referenced the same can be linked to district and state level maps and can finally establish a macro level LIS which can be made online for different purposes by applying filters wherever necessary.

The geo-referencing will help the Revenue Department to standardize the cadastral level database to Survey Of India projection system

Geotech’s Cadastral Mapping Expertise:
Domestic Experience:
For the Settlement Commissioner & Director of Land Records in the state of Gujarat, Geotech has undertaken a series of cadastral mapping applications and evaluated the feasibility of an automated LIS development. The studies involved computerizing the existing land survey records, called Tippans as referred earlier, and generated Cadastral level village maps for the Government of Gujarat. Geotech has developed software for computerizing land records from the very old records and generating an updated revenue land record with MS unit measurements. Some of these records are dated back to as old as 1900 and their physical condition is very vulnerable. The customized software, LanRec, has the facilities to automatically generate the individual survey plots (TIPPANS), Unit conversion, field measurement tables (FMT), plotting/reproduction of the Tippans and finally mosaic them together to create a village cadastral map.

To address the needs of those states where individual plot ownerships drawings are not available, the LanRec generates the individual survey plot from the village level cadastral map there by creates a complete detailed database on individual landownership for the state. The same can be printed automatically with a specific map layout.

In an earlier project for the state of Rajasthan, Geotech has successfully developed village level digital database for Rajasthan Government. The project involved digitization of individual village maps with multi-information layers like administrative boundaries, cadastral data, transportation networks, various amenities and natural resources etc. the total layers were about 10 in number. More than 120 attributes were hot-linked with spatial map data for a quick query and retrieval under Arc/Info GIS environment.

All these village maps were mosaiced to make a seamless district/state level digital database. Further these digitized spatial layers were integrated with the existing tabular data facilitating options for performing queries and analyses. Thereby the system could generate various socio-economic parameters and spatially depict them in the form of maps for better understanding of the regions in the state.

International Experience:
Geotech has strong expertise in handling computerization of land parcel (in Indian context they are referred to Survey numbers) information such as their actual shapes and building attribute databases. These projects have been executed for several Cities / Counties of US Federal Government departments. Every parcel has been allocated a unique code, called Parcel Identification Number (PIN). Wherein the source information is acquired from paper drawn measurement sheets, ammonia prints and Ortho-photo maps prepared on varied scales like 1/100, 1/200 or 1/400. Computerized COGO based CAD tools have been developed in-house and were employed in these projects to deliver accurate databases. Automated the process for calculating the acreage of each parcel and linked with other attributes. The same data has been further integrated in a GIS environment and used for creation of city map guides and address geo-coding applications.

Conclusions
Development of a region is influenced by the land and its availability. The changing scenario in development and modern governance demands advanced technologies and tools for better understanding of needs and planning.

The need of the day is creation of a comprehensive Land Information System. CADD and GIS technologies have great potential in the field of land records and creation of LIS that serve as multi-purpose administrative tool.


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