Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
The detection may be used for raster maps imported in GRASS GIS or for external files (or using both). To use raster maps in GRASS GIS, you need to pass them in three bands following the order used during the training, e.g. if the training has been made on RGB images, use band1=*.red, band1=*.green and band3=*.blue. To pass multiple images, put more maps into band* parameters, divided by ",".
The detection may be used also for multiple external files. However, all files for the detection must be in one directory specified in the images_directory parameter. Even when using only one image, the module finds it through this parameter.
When detecting, you can use new names of classes. Classes in the model are not referenced by their name, but by their order. It means that if the model was trained with classes corn,rice and you use i.ann.maskrcnn.detect with classes zea,oryza, zea areas will present areas detected as corn and oryza areas will present areas detected as rice.
If the external file is georeferenced externally (by a worldfile or an .aux.xml file), please use -e flag.
One map imported in GRASS GIS:
i.ann.maskrcnn.detect band1=map1.red band2=map1.green band3=map1.blue classes=buildings,lakes model=/home/user/Documents/logs/mask_rcnn_buildings_lakes_0100.h5
Two maps (map1, map2) imported in GRASS GIS:
i.ann.maskrcnn.detect band1=map1.red,map2.red band2=map1.green,map2.green band3=map1.blue,map2.blue classes=buildings,lakes model=/home/user/Documents/logs/mask_rcnn_buildings_lakes_0100.h5
External files, the georeferencing is internal (GeoTIFF):
i.ann.maskrcnn.detect images_directory=/home/user/Documents/georeferenced_images classes=buildings,lakes model=/home/user/Documents/logs/mask_rcnn_buildings_lakes_0100.h5 images_format=tif
External files, the georeferencing is external:
i.ann.maskrcnn.detect images_directory=/home/user/Documents/georeferenced_images classes=buildings,lakes model=/home/user/Documents/logs/mask_rcnn_buildings_lakes_0100.h5 images_format=png -e
i.ann.maskrcnn.detect band1=map1.red band2=map1.green band3=map1.blue classes=buildings,lakes model=/home/user/Documents/logs/mask_rcnn_buildings_lakes_0100.h5 output_type=point
Available at: i.ann.maskrcnn.detect source code (history)
Accessed: Wednesday Nov 13 05:52:16 2024
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