SEMFIRE forest dataset for semantic segmentation and data augmentation

<strong>SEMFIRE Datasets (Forest environment dataset)</strong> These datasets are used for semantic segmentation and data augmentation and contain various forestry scenes. They were collected as part of the research work conducted by the Institute of Systems and Robotics, University of Coimbra team (https://www.isr.uc.pt/) within the scope of the Safety, Exploration and Maintenance of Forests with Ecological Robotics (SEMFIRE, ref. CENTRO-01-0247-FEDER-03269; http://semfire.ingeniarius.pt/) research project coordinated by Ingeniarius Ltd. (https://ingeniarius.pt/). The semantic segmentation algorithms attempt to identify various semantic classes (e.g. background, live flammable materials, trunks, canopies etc.) in the images of the datasets. The datasets include diverse image types, e.g. original camera images and their labeled images. In total the SEMFIRE datasets include about 1700 image pairs. Description of<strong> </strong>each dataset: <strong>2019_2020_quinta_do_bolao_coimbra:</strong> Robot moving on a path through a forest environment <strong>2021_ctcv_parking_lot_coimbra:</strong> Robot moving in a circle in a parking lot for testings <strong>2021_sete_fontes_forest: </strong>A set of forest images acquired by hand-held apparatus All datasets include a detailed description as a text file. Description of <strong>directories</strong> in each dataset: <strong>img:</strong> includes original camera images <strong>lbl:</strong> single channel images (ground truth) with corresponding labels for each image in<strong> img</strong> <strong>lbl_colored: </strong>camera <strong> </strong>images in <strong>lbl</strong> colorized according to different semantic classes (for more details see the datasets descriptions) <strong>lbl_overlaid: </strong>camera images in <strong>img </strong>overlaid with corresponding labels (colored) The following table shows the statistical description of typical portuguese woodland configurations with structured plantations of <em>Pinus pinaster </em>(<em>Pp, </em>pine trees) and <em>Eucalyptus globulus </em>(<em>Eg, </em>eucalyptus). <strong>"Low density" structured plantation</strong> <strong>"High density" structured plantation</strong> <strong>Tree density (assuming plantation in rows spaced 3m apart in all cases)</strong> <em>Eg</em>: 900 trees/ha <em>Pp</em>: 450 trees/ha <em>Eg</em>: 1400 trees/ha <em>Pp</em>: 1250 trees/ha <strong>Average heights and corresponding ages of plantation trees</strong> <em>Eg</em>: 12m (6 years old) <em>Pp</em>: 10m (15 years old) <em>Eg</em>: 12m (6 years old) <em>Pp</em>: 10m (15 years old) <strong>Maximum heights and corresponding fully-matured ages of plantation trees</strong> <em>Eg</em>: 20m (11 years old) <em>Pp</em>: 30m (40 years old) <em>Eg</em>: 20m (11 years old) <em>Pp</em>: 30m (40 years old) <strong>Diameter at chest level (DCL – 1,3m) of plantation trees (average/maximum)</strong> <em>Eg</em>: 15cm/25cm <em>Pp</em>: 20cm/50cm <em>Eg</em>: 15cm/25cm <em>Pp</em>: 20cm/50cm <strong>Natural density of herbaceous plants</strong> 30% of woodland area 30% of woodland area <strong>Natural density of bush and shrubbery</strong> 30% of woodland area 30% of woodland area <strong>Natural density of arboreal plants (not part of plantation)</strong> 5% of woodland area 5% of woodland area