Founded in 2018 and based in Namur, Stemme quickly established itself as a leader in Earth observation and anomaly detection. Active in Belgium as well as internationally, notably in France, the Netherlands and Germany, Stemme is recognized for its technological innovation and operational excellence in the development of advanced monitoring solutions. With a dynamic team of 20 employees and 6 experienced pilots, Stemme operates two aircraft equipped with state-of-the-art sensors, including RGB and thermal cameras, to capture accurate aerial images. These images are then analyzed using detection models, supplemented by human validation. This process provides comprehensive monitoring services to end customers, covering all stages from data collection to analysis and reporting of results. Figure 1. Air assets of Stemme Belgium SA. At the end of 2023, Stemme raised €5 million to achieve the company’s strategic goals of becoming the leader in its field. In February 2024, the absorption of its subsidiary Stratos Solution marked a strategic milestone for Stemme, strengthening its monitoring and observation capabilities. This initiative demonstrates the company’s long-term vision to become the specialist in Earth observation anomaly detection, particularly for the gas pipeline and hydrocarbon sectors. Thanks to its proprietary technology, Stemme provides valuable information to act as soon as a threat is detected. Whether for infrastructure monitoring, disaster response support or area mapping, Stemme offers the opportunity to make informed decisions with its advanced technology. Stemme's skills are multiple and cover several key areas. First, the company excels at capturing aerial data through the use of advanced sensors. Then Stemme masters data management and the efficient processing of big data, which further strengthens this capability. Stemme also stands out in the analysis and detection of anomalies. Indeed, the company is developing advanced methods for detecting anomalies in infrastructure, integrating artificial intelligence to address potential problems, thus improving safety and operational efficiency. The ongoing research project aims to further these skills by creating digital twins based on Earth observation. This progress is essential for the market that Stemme is targeting, in particular the high-voltage network, where 3D modelling will make it possible to decorate the acquisition of the analysis that is currently carried out on raw data, which will allow a detailed analysis of the infrastructures. Thus, through a multidimensional representation, this project promises to transform the detection of anomalies by integrating digital twins, allowing a rapid formation of new algorithms. Among Stemme's notable initiatives, the Sunrise and Sunshine projects stand out. The Sunrise project, supported by the Walloon Region, allowed the development and realization of a stratospheric drone demonstrator, the H001. This drone is equipped with the necessary technologies for high-altitude flights, aimed at offering an advanced surveillance solution. The Sunshine project, which succeeds Sunrise, aimed to operate this demonstrator. While Sunshine's pursuit has been paused for strategic reasons, these projects illustrate Stemme's ability to push the boundaries of technological innovation and explore new frontiers in Earth observation. Ultimately, the goal is to develop an integrated technology capable of collecting datasets, creating digital twins, detecting anomalies based on mathematical models or machine learning, and developing a GIS platform to facilitate the use and understanding of this data. By continuing to innovate and perfect its technologies, Stemme is committed to providing advanced risk-detection solutions, backed by its proprietary artificial intelligence algorithms, and becoming a global leader in this field.