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Nos Villes Vertes

Nos Villes Vertes

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Launched in 2019, Nos Villes Vertes is an innovative initiative by Kermap that aims to provide comprehensive and detailed data on the tree population across France's 36,000 towns and cities. Utilizing high-resolution aerial photographs from the national geographic institute IGN, Kermap employs sophisticated AI techniques, particularly deep learning models based on neural networks, to process this massive dataset. The project involves the unprecedented analysis of IGN's entire 20-terabyte, 20-centimeter orthophotographic dataset, completed in an impressively short timeframe through an IGNFab incubation contract. The platform simplifies complex data into user-friendly visualizations, offering easily interpretable indicators such as tree coverage ratio and tree surface per capita. This tool is designed to help local authorities and citizens alike understand urban vegetation and underscores the vital importance of trees in urban settings, thereby contributing to public interest technology.

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An extensive census of the tree population in France’s 36,000 towns and cities, what for ? The raw data had been available for years in national geographic institute IGN’s high-resolution aerial photographs. But it had never been processed into a synthetic platform. More often than not, even local authorities only had acess to oversimplified data. Or at best patchy as only public spaces were taken into account.

This is why we decided to make this information on urban vegetation accessible to all. We also tried to make it easier to read and comprehend, thanks to user-friendly datavisualization with simple indicators (tree coverage ratio, tree surface per capita) for each and every town in mainland France. Discover Nos Villes Vertes.

This project illustrates our ability to use innovative AI techniques, especially deep-learning models, based on neural networks, to quickly process a huge volume of data. No less than the IGN’s whole 20-cm orthophotographic dataset, equating to 20 TB of data, was analyzed in record time.

This effort was completed during an IGNFab incubation contract, with two main goals in view. We were asked to demonstrate our technological know-how, while designing a public-interest tool. Nos Villes Vertes has met the challenge by offering everyone an opportunity to better know their area, while emphasizing the essential role played by trees in the city.