Topcon technology facilitates digital preservation of Japanese heritage site

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Topcon technology used for digital preservation of historic Sogi hydroelectric plant.

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Topcon Positioning Group announces data from its participation in the digital preservation of the historic Sogi hydroelectric plant in Japan were unveiled at a special event in Bonn, Germany in conjunction with the recent UNESCO World Heritage Committee meetings. The committee examined proposals to inscribe 36 properties on UNESCO’s World Heritage List.

Considered a significant contribution to the Meiji industrial revolution, the plant was mapped as part of the CyArk 500 Challenge — an international project to digitally preserve and create awareness of some of the world’s most significant cultural heritage sites.

The Sogi site was recorded in 3D by an international team using the latest Topcon geopositioning technologies including the GLS-2000 scanner, the IP-S3 mobile mapping system, as well as aerial mapping solutions. “We are proud to have provided our technology and resources to the Sogi project,” said Eduardo Falcon, Topcon executive vice president and general manager of the GeoPositioning Solutions Group.

“As a global company headquartered in Japan, we particularly understand the importance of this site and appreciate the CyArk efforts to digitally preserve it for future generations. The Sogi hydroelectric plant was a pinnacle of the industrial ingenuity of the period, and we are honored to have this opportunity to link our technology with the technology of the past,” said Falcon.

The National Congress of Industrial Heritage, in collaboration with the Japanese government nominated the Sogi plant to the CyArk 500 Challenge in December of 2014. Topcon teamed with CyArk and the National Congress to develop a three-dimensional map of the site for future preservation and visualization.

CyArk archived the captured data and used it to build an interactive online map of the site to promote the preservation and study of Japan’s industrial heritage.

Ben Kacyra, CyArk founder, said, “We are very excited for the digital preservation of the Sogi hydroelectric plant. The CyArk 500 strives to connect the international heritage community in an effort to preserve and experience incredible places in a way previously impossible.”

Located in Isa, the Sogi power plant was constructed in 1909. At its height the hydroelectric plant generated 6,700 kW of power. The Sogi plant closed in 1965 with the construction of the larger Tsuruda dam downriver. The new dam caused Sogi to flood seasonally, endangering the unique representation from the Meiji industrial revolution.

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About Topcon Positioning Group
Topcon Positioning Group is headquartered in Livermore, California, USA ( Its European head office is in Capelle a/d IJssel, the Netherlands ( Topcon Positioning Group designs, manufactures and distributes precise positioning products and solutions for the global surveying, construction, agriculture, civil engineering, BIM, mapping and GIS, asset management and mobile control markets. Its brands include Topcon, Sokkia, Tierra, Wachendorff Elektronik, Digi-Star, NORAC and 2LS. Topcon Corporation (, founded in 1932, is traded on the Tokyo Stock Exchange (7732).

Press Information
USA: Staci Fitzgerald, 925-245-8610
Europe: Stuart Proctor

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Staci Fitzgerald
Topcon Positioning Systems Group
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