Mladen Stojic, President of Hexagon Geospatial
Dynamic Panoramic is a column by Mladen Stojic, President of Hexagon Geospatial. Mr. Stojic is a renowned geospatial industry expert who shares his insights into how geospatial information is increasingly being used to drive critical decisions in organizations of all sizes.
Delivering Rapid Public Access to Terabytes of Data
November 18th, 2013 by Mladen Stojic, President of Hexagon Geospatial
As many nations are seeking solutions for distributing and publishing national geospatial data, they often run into the challenge of compressing, delivering and effectively handling big data on such a large scale.
Intergraph today announced that Czech Republic’s national mapping agency, the Czech Office for Surveying, Mapping and Cadastre (COSMC), has implemented a web-based solution from Intergraph to meet this challenge.
COSMC is an autonomous supreme body of the state administration of surveying, mapping and cadastre in the Czech Republic. The organization is responsible for the complete administration of the cadastre, including legal relations and real estate property, and also handles large- to small-scale mapping for the entire nation. In addition, it manages the geodetic surveys and documentation of state boundaries, and also develops and maintains the Information System of Surveying, Mapping and Cadastre for the country.
Since 2005, the Land Survey Office of COSMC had used a web-based portal to serve national geospatial data to the government, designers, network administrators, schools as well as small entrepreneurs. The portal supports thousands of users and serves up to 4 million requests per day. As the demand for open web mapping services (like OGC-ISO WMS, WMTS and WFS) increased, the organization investigated solutions that would allow this data to be shared easily and directly in digital format.
COSMC’s original system, based on Intergraph’s GeoMedia® WebMap and GeoMedia®, was recently upgraded to an integrated web-based portal. COSMC has also integrated image exploitation and analysis, leveraging ERDAS IMAGINE into existing workflows. Prior to upgrading, COSMC provided the data in file formats. Now, through the combined capabilities of the upgrade, COSMC is able to offer the public enhanced viewing, discovery, transformation and download services, ensuring excellent throughput. In addition, the organization is able to provide WMTS services for three fundamental user communities: national, INSPIRE and GoogleMaps.
We also developed third-party applications that allow COSMC’s restricted Ortophoto imagery to be accessed by the public, which includes online newspaper articles that are GoogleMaps compatible. Intergraph has also developed COSMC branded mobile applications.
In order to digitize the data and make it publically available, COSMC needed a solution for compressing 4TB of existing raster data held in thousands of separate TIFF files. By using Intergraph’s Enhanced Compression Wavelet (ECW) technology, the organization was able to reduce the archive’s size to just 750 GB. ECW technology allows organizations to compresses terabyte-sized imagery files to five percent of its original size, while still retaining the images’ full visual quality and lightning-fast display performance. Specifically designed for geospatial data, ECW is supported by the industry’s most popular GIS, CAD, and remote sensing solutions for the desktop, web or mobile environments. By also leveraging ERDAS APOLLO, COSMC is able to efficiently support thousands of concurrent users with the Enhanced Compressed Wavelet Protocol (ECWP), the Intergraph-patented delivery protocol to stream ECW and JPEG2000 compressed data to clients to create a distributed decompression environment.
In the past, many countries grappled with the challenge of making massive volumes of geospatial data accessible to the public. These efforts by the Czech Republic reinforce that it is now possible for any country to better serve its citizens by delivering and leveraging geospatial data in new and unique ways.