Label-free prediction of three-dimensional fluorescence images from transmitted-light microscopy

Support

This code is in active development and is used within our organization. We are currently not supporting this code for external use and are simply releasing the code to the community AS IS. The community is welcome to submit issues, but you should not expect an active response.

For the code corresponding to our Nature Methods paper, please use therelease_1branchhere.

System requirements

We recommend installation on Linux and an NVIDIA graphics card with 12+ GB of RAM (e.g., NVIDIA Titan X Pascal) with the latest drivers installed.

Installation

• We recommend an environment manager such asConda.
• Install Python 3.6+ if necessary.
• All commands listed below assume the bash shell.
• Clone and install the repo:

git clone https://github.com/AllenCellModeling/pytorch_fnet.git
cdpytorch_fnet
pip install.

• If you would like to instead install for development:

pip install -e.[dev]

• If you want to run the demos in the examples directory:

pip install.[examples]

Demo on Canned AICS Data

This will download some images from ourIntegrated Cell Quilt repositoryand start training a model

cdexamples
python download_and_train.py

When training is complete, you can predict on the held-out data with

python predict.py

Command-line tool

Once the package is installed, users can train and use models through thefnetcommand-line tool. To see what commands are available, use the-hflag.

fnet -h

The-hflag is also available for allfnetcommands. For example,

fnet train -h

Train a model

Model training is done through the thefnet traincommand, which requires a json indicating various training parameters. e.g., what dataset to use, where to save the model, how the hyperparameters should be set, etc. To create a template json:

fnet train --json /path/to/train_options.json

Users are expected to modify this json to suit their needs. At a minimum, users should verify the following json fields and change them if necessary:

• "dataset_train":The name of the training dataset.
• "path_save_dir":The directory where the model will be saved. We recommend that the model be saved in the same directory as the training options json.

Once any modifications are complete, initiate training by repeating the above command:

fnet train --json /path/to/train_options.json

Since this time the json already exists, training should commence.

Perform predictions with a trained model

User can perform predictions using a trained model with thefnet predictcommand. A path to a saved model and a data source must be specified. For example:

fnet predict --json path/to/predict_options.json

As above, users are expected to modify this json to suit their needs. At a minimum, populate the following fields and/or copy and paste corresponding dataset values from/path/to/train_options.json

e.g.:

"dataset_kwargs":{
"col_index":"Index",
"col_signal":"signal",
"col_target":"target",
"path_csv":"path/to/my/train.csv",
...
"path_model_dir":[
"models/model_0"
],
"path_save_dir":"path/to/predictions/dir",

This will use the model savemodels/dnato perform predictions on thesome.datasetdataset. To see additional command options, usefnet predict -h.

Once any modifications are complete, initiate training by repeating the above command:

fnet predict --json path/to/predict_options.json

Citation

If you find this code useful in your research, please consider citing our manuscript in Nature Methods:

@article{Ounkomol2018,
doi = {10.1038/s41592-018-0111-2},
url = {https://doi.org/10.1038/s41592-018-0111-2},
year = {2018},
month = {sep},
publisher = {Springer Nature America, Inc},
volume = {15},
number = {11},
pages = {917--920},
author = {Chawin Ounkomol and Sharmishtaa Seshamani and Mary M. Maleckar and Forrest Collman and Gregory R. Johnson},
title = {Label-free prediction of three-dimensional fluorescence images from transmitted-light microscopy},
journal = {Nature Methods}
}

Contact

Gregory Johnson
E-mail:[email protected]

Allen Institute Software License

Allen Institute Software License – This software license is the 2-clause BSD license plus clause a third clause that prohibits redistribution and use for commercial purposes without further permission.
Copyright © 2018. Allen Institute. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Redistributions and use for commercial purposes are not permitted without the Allen Institute’s written permission. For purposes of this license, commercial purposes are the incorporation of the Allen Institute's software into anything for which you will charge fees or other compensation or use of the software to perform a commercial service for a third party. Contact[email protected]for commercial licensing opportunities.

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