CorStitch: Open-Source Tool Automates Coral Reef Video Stitching

CorStitch, developed by Maypa et al., is a new open-source software that automates video stitching for coral reef monitoring. It processes down-looking belt and dive transect videos by extracting central horizontal strips from successive frames and aligning them using a Fourier-based image registration algorithm. The output is a georeferenced mosaic with marked features, enabling scientific analysis. Tests show the tool produces mosaics comparable to existing commercial software, all while being completely free and requiring minimal technical expertise.

By lowering the barrier to high-quality underwater imaging, CorStitch empowers local communities, NGOs, and government agencies to conduct effective reef monitoring without expensive proprietary tools. The software's open-source nature allows for customization and further development, potentially scaling global conservation efforts. As coral reefs face increasing threats, accessible tools like CorStitch can significantly enhance data collection and analysis, supporting evidence-based protection strategies.