NAME

DESCRIPTION

Mask R-CNN tools allow the user to train his own model and use it for a detection of objects, or to use a model provided by someone else. It can be seen as a supervised classification using convolutional neural networks.

The training is done using module i.ann.maskrcnn.train. The user feeds the module with training data consisting of images and masks for each instance of intended classes, and gets a model. For difficult tasks and when not using a pretrained model, the training may take even weeks; in case of a good pretrained model and powerful PC with GPU support, the training could get good results after 1 day and even less.

When the user has a model, it can be used for the detection. i.ann.maskrcnn.detect detects classes learned during the training and extracts from given images vectors corresponding to detected objects. Objects can be extracted either as areas or points.

DEPENDENCIES

i.ann.maskrcnn.* modules contain a lot of external Python dependencies. To run modules, it is necessary to have them installed. Modules use Python3, so please install Python3 versions.

• NumPy
• Pillow
• SciPy
• Cython
• scikit-image
• OSGeo
• TensorFlow < 2.0
• Keras
• h5py

After dependencies are fulfilled, modules can be installed in GRASS GIS >= 7.8 using the g.extension module:

g.extension extension=maskrcnn

MODULES

AUTHOR

SOURCE CODE

Available at: i.ann.maskrcnn source code (history)

Latest change: Thursday Oct 27 13:21:51 2022 in commit: 0a5146a7c1f245b64f23568ff1bb1a75ed260bfe

Main index | Imagery index | Topics index | Keywords index | Graphical index | Full index

© 2003-2023 GRASS Development Team, GRASS GIS 8.3.dev Reference Manual