Beach-imaging derived beach wracks

This is a draft-dataset providing a time series of beach wrack coverage (COVR) at Cala Millor beach, derived from imagery captured by the SIRENA beach video-monitoring system. SIRENA's cameras acquire overlapping, hourly, oblique images at a resolution of 1280×960 pixels. A deep learning-based object detection and segmentation model identifies seagrass wracks in these images. Photogrammetric techniques then rectify the images to a terrain coordinate system, and seagrass wrack coverage is calculated as the area fraction per 5 m grid cell. To ensure data validity, a preliminary quality control step filters out detections landwards from the promenade seawall.