Code for paper "SketchyGAN: Towards Diverse and Realistic Sketch to Image Synthesis"
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SketchyGAN: Towards Diverse and Realistic Sketch to Image Synthesis

Code for "SketchyGAN: Towards Diverse and Realistic Sketch to Image Synthesis".


  • Python, NumPy, SciPy
  • Tensorflow(>=1.4.0)
  • A recent NVIDIA GPU


  • The path to data files needs to be specified in See below for detailed information on data files.
  • You need to download "Inception-V4 model", unzip it and put the checkpoint under inception_v4_model.


Pre-built tfrecord files are available for out of the box training.

  • Files for the Sketchy Database can be found here.
  • Files for Augmented Sketchy(i.e. flickr images+edge maps), resized to 256x256 regardless of original aspect ratios, can be found here.

If you wish to get the original image files:

  • The Sketchy Datqabase can be found here.
  • Use under data_processing to extract images from tfrecord files. You need to specify input and output paths. The extracted images will be sorted by class names.
  • Please contact me if you need the original (not resized) Flickr images, since they are too large to upload to any online space.


The model can be trained out of the box, by running But there are several places you can change configurations:

  • Commandline options in
  • Some global options in
  • Activation/Normalization functions in


  • The model will be saved periodically. If you wish to resume, just use commandline switch resume_from.
  • If you wish to test the model, change mode from train to test and fill in resume_from.