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https://github.com/CSAILVision/gandissect

Pytorch-based tools for visualizing and understanding the neurons of a GAN. https://gandissect.csail.mit.edu/
https://github.com/CSAILVision/gandissect

deep-learning gan generative-adversarial-network image-manipulation interactive-visualizations interpretable-ml pytorch

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Pytorch-based tools for visualizing and understanding the neurons of a GAN. https://gandissect.csail.mit.edu/

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README 

        
# GANDissect 



[**Project**](https://gandissect.csail.mit.edu/) | [**Demo**](http://gandissect.res.ibm.com/ganpaint.html?project=churchoutdoor&layer=layer4) | [**Paper**](https://arxiv.org/pdf/1811.10597.pdf) | [**Video**](http://tiny.cc/gandissect) 



[GAN Dissection](https://gandissect.csail.mit.edu/) is a way to inspect the internal representations of a generative adversarial network (GAN) to understand how internal units align with human-interpretable concepts. It is part of [NetDissect](https://netdissect.csail.mit.edu/).



This repo allows you to dissect a GAN model. It provides the dissection results as a static summary or as an interactive visualization. Try our interactive [GANPaint demo](http://gandissect.res.ibm.com/ganpaint.html?project=churchoutdoor&layer=layer4) to interact with GANs and draw images. 



## Overview






[Visualizing and Understanding Generative Adversarial Networks](http://gandissect.csail.mit.edu) 


[David Bau](http://people.csail.mit.eduÂ/davidbau/home/), [Jun-Yan Zhu](http://people.csail.mit.edu/junyanz/), [Hendrik Strobelt](http://hendrik.strobelt.com/), [Bolei Zhou](http://people.csail.mit.edu/bzhou/), [Joshua B. Tenenbaum](http://web.mit.edu/cocosci/josh.html), [William T. Freeman](https://billf.mit.edu/), [Antonio Torralba](http://web.mit.edu/torralba/www/) 


MIT CSAIL, MIT-IBM Watson AI Lab, CUHK, IBM Research 


In arXiv, 2018.



## Analysis and Applications

### Interpretable Units in GANs




### Analyzing different layers




### Diagnosing and improving GANs




### Removing objects from conference rooms




### Removing windows from different natural scenes




### Inserting new objects into images




## Release history

v 0.9 alpha  - Nov 26,  2018 



## Getting Started

Let's set up the environment and dissect a `churchoutdoor` GAN. This requires some CUDA-enabled GPU and some disk space.



### Setup



To install everything needed from this repo, have `conda` available,

and run:



```

script/setup_env.sh      # Create a conda environment with dependencies

script/make_dirs.sh      # Create the dataset and dissect directories

script/download_data.sh  # Download support data and demo GANs

source activate netd     # Enter the conda environment

pip install -v -e .      # Link the local netdissect package into the env

```



Details.  The code depends on python 3, Pytorch 4.1, and several other

packages.  For conda users, `script/environment.yml` provides the details

of the dependencies.  For pip users, `setup.py` lists everything needed.



Data.  The `download_data.sh` script downloads the segmentation dataset

used to dissect classifiers, the segmentation network used to dissect GANs,

and several example GAN models to dissect.  The downloads will go into

the directories `dataset/` and `models/`.  If you do not wish to download

the example networks, `python -m netdissect --download` will download

just the data and models needed for netdissect itself.



### Dissecting a GAN



GAN example: to dissect three layers of the LSUN living room progressive

GAN trained by Karras:



```

python -m netdissect \

   --gan \

   --model "netdissect.proggan.from_pth_file('models/karras/livingroom_lsun.pth')" \

   --outdir "dissect/livingroom" \

   --layer layer1 layer4 layer7 \

   --size 1000

```



The result is a static HTML page at `dissect/livingroom/dissect.html`, and

a JSON file of metrics at `dissect/livingroom/dissect.json`.



You can test your own model: the `--model` argument is a fully-qualified

python function or constructor for loading the GAN to test.  The

`--layer` names are fully-qualified (`state_dict`-style) names for layers.



By default, a scene-based segmentation is used but a different segmenter class

can be substituted by supplying an alternate class constructor to

`--segmenter`.  See `netdissect/segmenter.py` for the segmenter base class.



## Running a GAN editing server (alpha)



Once a GAN is dissected, you can run a web server that provides an API

that generates images with (optional) interventions.



```

python -m netdissect.server --address 0.0.0.0

```




The editing UI (right) is served at [http://localhost:5001/](http://localhost:5001/) .



Other URLs:



- [http://localhost:5001/api/ui](http://localhost:5001/api/ui) is the OpenAPI/swagger UI for directly

    testing GAN interventions.

- [http://localhost:5001/data/livingroom/dissect.html](http://localhost:5001/data/livingroom/dissect.html) static net

    dissection reports.

- [http://localhost:5001/data/livingroom/edit.html](http://localhost:5001/data/livingroom/edit.html) a dissection-based

    interface for testing interventions.

- TODO: [http://localhost:5001/ganpaint.html](http://localhost:5001/ganpaint.html) will serve GANpaint



## Advanced Level



### Dissecting a classifier (NetDissect)



Classifier example: to dissect three layers of the pretrained `alexnet` in `torchvision`:

```bash

python -m netdissect \

   --model "torchvision.models.alexnet(pretrained=True)" \

   --layers features.6:conv3 features.8:conv4 features.10:conv5 \

   --imgsize 227 \

   --outdir dissect/alexnet-imagenet

```



No special web server for a classifier.



### Command Line Details



Documentation for the netdissect command-line utility.



```

usage: python -m netdissect [-h] [--model MODEL] [--pthfile PTHFILE]

                            [--outdir OUTDIR] [--layers LAYERS [LAYERS ...]]

                            [--segments SEGMENTS] [--segmenter SEGMENTER]

                            [--download] [--imgsize IMGSIZE]

                            [--netname NETNAME] [--meta META [META ...]]

                            [--examples EXAMPLES] [--size SIZE]

                            [--batch_size BATCH_SIZE]

                            [--num_workers NUM_WORKERS]

                            [--quantile_threshold {[0-1],iqr}] [--no-labels]

                            [--maxiou] [--covariance] [--no-images]

                            [--no-report] [--no-cuda] [--gen] [--gan]

                            [--perturbation PERTURBATION] [--add_scale_offset]

                            [--quiet]

```



optional arguments:



```

  -h, --help            show this help message and exit

  --model MODEL         constructor for the model to test

  --pthfile PTHFILE     filename of the .pth file for the model

  --outdir OUTDIR       directory for dissection output

  --layers LAYERS [LAYERS ...]

                        space-separated list of layer names to dissect, in the

                        form layername[:reportedname]

  --segments SEGMENTS   directory containing segmentation dataset

  --segmenter SEGMENTER

                        constructor for a segmenter class

  --download            downloads Broden dataset if needed

  --imgsize IMGSIZE     input image size to use

  --netname NETNAME     name for the network in generated reports

  --meta META [META ...]

                        json files of metadata to add to report

  --examples EXAMPLES   number of image examples per unit

  --size SIZE           dataset subset size to use

  --batch_size BATCH_SIZE

                        batch size for a forward pass

  --num_workers NUM_WORKERS

                        number of DataLoader workers

  --quantile_threshold {[0-1],iqr}

                        quantile to use for masks

  --no-labels           disables labeling of units

  --maxiou              enables maxiou calculation

  --covariance          enables covariance calculation

  --no-images           disables generation of unit images

  --no-report           disables generation report summary

  --no-cuda             disables CUDA usage

  --gen                 test a generator model (e.g., a GAN)

  --gan                 synonym for --gen

  --perturbation PERTURBATION

                        the filename of perturbation attack to apply

  --add_scale_offset    offsets masks according to stride and padding

  --quiet               silences console output

```



### API, for classifiers



It can be used from code as a function, as follows:



1. Load up the convolutional model you wish to dissect, and call

   `imodel = InstrumentedModel(model)` and then

   `imodel.retain_layers([layernames,..])` to instrument the model.

2. Load the segmentation dataset using the BrodenDataset class;

   use the `transform_image` argument to normalize images to

   be suitable for the model, and the `size` argument to truncate the dataset.

3. Choose a directory in which to write the output, and call

   `dissect(outdir, imodel, dataset)`.



A quick approximate dissection can be done by reducing the `size`

of the `BrodenDataset`.  Generating example images can be time-consuming

and the number of images can be set via `examples_per_unit`.



Example:



```

    from netdissect import InstrumentedModel, dissect

    from netdissect import BrodenDataset



    model = InstrumentedModel(load_my_model())

    model.eval()

    model.cuda()

    model.retain_layers(['conv1', 'conv2', 'conv3', 'conv4', 'conv5'])

    bds = BrodenDataset('dataset/broden1_227',

            transform_image=transforms.Compose([

                transforms.ToTensor(),

                transforms.Normalize(IMAGE_MEAN, IMAGE_STDEV)]),

            size=10000)

    dissect('result/dissect', model, bds,

            batch_size=100,

            examples_per_unit=10)

```



The Broden dataset is oriented towards semantic objects, parts, material, colors, etc that are found in natural scene photographs.

If you want to analyze your model with a different semantic segmentation, you can substitute a different segmentation dataset and supply a `segrunner`, an argument that describes how to get segmentations and RGB images from the dataset.  See `ClassifierSegRunner` for the details.



### API, for generators



Similarly:



1. Load up the generator model wish to dissect, and call

   `retain_layers(model, [layernames,..])` to instrument the model.

2. Create a dataset of z input samples for testing.  If your model

   uses a uniform normal distribution, z_dataset_for_model will make one.

3. Choose a directory in which to write the output, and call

   `dissect(outdir, model, dataset, segrunner=GeneratorSegRunner())`.



The time for the dissection is proportional to the number of samples

in the dataset.



```

    from netdissect import InstrumentedModel, dissect

    from netdissect import z_dataset_for_model, GeneratorSegRunner



    model = InstrumentedModel(load_my_model())

    model.eval()

    model.cuda()

    model.retain_layers(model, ['layer3', 'layer4', 'layer5'])

    zds = z_dataset_for_model(size, model)

    dissect('result/gandissect', model, zds,

            segrunner=GeneratorSegRunner(),

            batch_size=100,

            examples_per_unit=10)

```



The `GeneratorSegRunner` defaults to a running a semantic segmentation network oriented towards semantic objects, parts, and materials found in natural scene photographs.  To use a different semantic segmentation, you can supply a custom `Segmenter` subclass to the constructor of `GeneratorSegRunner`.



## Citation

If you use this code for your research, please cite our [paper](https://arxiv.org/pdf/1811.10597.pdf):

```

@inproceedings{bau2019gandissect,

 title={GAN Dissection: Visualizing and Understanding Generative Adversarial Networks},

 author={Bau, David and Zhu, Jun-Yan and Strobelt, Hendrik and Zhou, Bolei and Tenenbaum, Joshua B. and Freeman, William T. and Torralba, Antonio},

 booktitle={Proceedings of the International Conference on Learning Representations (ICLR)},

 year={2019}

}

```