Tracasa multiplies by four the resolution of the images of the Sentinel 2A satellites with deep learning techniques

The public company of the Goverment of Navarra improves all the metrics previously obtained in this field with SENX4, a new enabling technology that is at the cutting edge of superresolution

Tracasa, public company of the Goverment of Navarra, has multiplied by four the resolution of the images of the Sentinel 2A satellites with deep learning techniques. Tracasa has reached this international milestone with SENX4, an enabling technology that improves all the metrics previously obtained in this field and that is at the cutting edge of superresolution. Here you can find more about SENX4, in Tracasa´s website, in the section Innovative stories.

“Sentinel 2A satellites of the European Space Agency offer multispectral images with a spatial resolution of 10 meters per pixel, which sometimes can limit their uses. In Tracasa, with our SENX4 model we have improved the RGB and NIR bands resolution, going from 10 meters per pixel to 2,5 meters per pixel, with a 4X factor” , explains Carlos Aranda, Tracasa Research and Innovation manager.

To achieve this result, Tracasa has taken a new step in the field of artificial intelligence and has used deep learning techniques in photogrammetry. These techniques use deep learning algorithms to copy and improve the human capacity to process and recognize patterns in images.

Aranda says that in order to increase the resolution of the images “we have not done postprocessing actions, such as color adjustments or sharpening (a technique that is used to remark the details of the images but spoils its spectral information). Our model only uses artificial intelligence to learn the patterns of the data and get an image as real as possible”.

Taking as a reference the combination of PSNR and SSIM indexes, a measurement system widely used in the analysis of images, the images obtained with SENX4 model offer an important improvement in the metrics compared to the images obtained with traditional interpolation models, achieving, as a final result, more defined images, clearer and more adjust to reality.

This milestone in the field of images superresolution opens the door of its aplication in different sectors. “SENX4 model is a technological tool that was unthinkable just a few years ago. From this moment, its use can be really relevant, for example, in the generation of maps related to topics such as the environment, emergency care or security”, explains Aranda.

Innovative stories: a meeting point in Tracasa´s website

In the section Innovative stories, Tracasa is going to present its most cutting-edge investigations, those tools that have a disruptive technology and that can have an important development in the next years. “Innovation and motivation to find new paths in the technological development are part of Tracasa´s DNA. We want that our progresses can converge in a single meeting point: Innovative stories”, Aranda says.

In this way, Tracasa plans to provide new innovative approaches in subjects such as artificial intelligence and data science, automated analytical models of remote sensing and geoscience, specialized digital models of the territory and 3D cities, smart cities platforms and digital twins (Internet of Things) and smart mapping in the field of mobility.

 In the last years, Tracasa has made a firm commitment to develop the use of artificial intelligence. In this sense, the public company of the Goverment of Navarra has developed, in collaboration with Tracasa Instrumental, 16 projects related to artificial intelligence since 2017, 11 of them in the last year. Besides, Tracasa is part of the IA Technology Capabilities Map in Spain, and has recently incorporated its services to the Digital Innovation Hub promoted by the Goverment of Navarra.