Cadastre software based on Open Source in Kyrgyzstan

Alexander Solovov

Solution developer

Land Registration Agency

Local name – Gosregister Responsible for land cadastre, rights

registration and property valuation Has about 49 regional offices countrywide. One central office, Land use Institute,

Agency of cartography and geodesy. Supported by World Bank and Sida

through Swedesurvey agency (Swedesurvey worked before 2009)

Automated registration system (ARS)

Core system for automation of business processes in land registration office.

Developed in 2003 Based on MS SQL Server 2000 and MS

Access (client) Currently used almost in all offices Has central database replicated from regional

offices, providing external services to the banks, real estate agencies and others

Before introduction of cadastre software

ARS operations on creating new property objects or modifying existing (e.g. amalgamation, subdivision) were implemented in text mode.

ARS didn’t have any spatial data or reference on spatial sources.

In most of the offices paper maps are used to handle geo data.

In some offices various standalone tools are used for mapping (ArcGIS, MapInfo, AutoCAD, etc.)

Usage of standalone tools brings confusion of different versions of data, inconsistency and has a high risk of data loss or damage

Cadastre softwareFirst attempt

In 2007 was initiated a creation of cadastre software in scope of World Bank project.

The following tools and formats were used: ESRI ArcGIS Engine Visual C# Shape files

Map objects are managed by coordinates only

No graphical tools No central database and network

environment support High cost per one sit (about $800) Proprietary code Difficult to extend

Disadvantages

Cadastre software Second attempt

In 2008 Swedesurvey had initiated development of new cadastre software with extended capabilities

Project was targeted on small regional offices whose didn’t have any perspective to get commercial software

Two versions were created in the scope of Swedesurvey project

Third version has been created in 2010 in the scope of World Bank project

Basic requirements

Create a solution, based on Open Source components (free of charge)

Introduce network database support as a central storage of digital maps

Develop graphical tools to manage map objects Integrate with ARS database and support existing

business rules Move all cartographer functions from ARS to

Cadastre software Extend and improve different functions from

previous release Add new functions

PostgreSQL PostGIS SharpMap GeoAPI.Net Proj.Net GDAL Visual C#

Components

System architecture

Client-server three-tier architecture with well-defined interfaces

Business layer (middle) exposed through web-services

Modular nature of tiers Works over TCP or HTTP (HTTPS)

protocols

Architecture diagram

Integration with ARS

Integrated with ARS (main database) by Property code (identification number)

Property objects are created or modified in cadastre software and automatically replicated into ARS

Information on owners, rights and restrictions is taken from ARS to display in cadastre software and use in extended search and analysis functions

Core functions

Map layers management and customization Add, remove layers (raster, shape file, PostgreSQL) Customization of colors, fills, lines, labels and business

objects binding Map viewing Simple georeferencing

By World File By polygon on the map

Applications processing Moving applications between departments Applications distribution inside department Actions are bound to application

Core functions

Spatial analysis Set of common spatial functions integrated with

information from registration database (ARS). Type of owner, type of land, type of usage, cost, etc.

Basic topology verification Export to shape file or raster formats Printing forms

Cadastre plan Land parcel binding Free printing with customized parameters

Core functions

Advanced search By map objects By property parameters By address By owners

Property objects operations Creation Amalgamation Subdivision Liquidation

Buffer Creation of buffer zones internal or external

Advanced graphical tools

Rule Point Arc Polyline Polygon Closed polygon Internal polygon On the fly switching between polygon,

polyline and arc Perpendicular

Advanced graphical tools

Parallel Movement Rotation Vertex editing Amalgamation Subdivision Copying Length and angle Total station Linear intersection

Main window

Results

Development of the last version was finished in November 2010

Introduced in the biggest registration office. Two offices are on the plan by the end of 2011

It was decided to abandon the use of proprietary software and introduce open source solution in all offices gradually

New requirements are prepared for the next release

Thank you for attention!

Questions?