Awesome
SpixelFCN: Superpixel Segmentation with Fully Convolutional Network
This is is a PyTorch implementation of the superpixel segmentation network introduced in our CVPR-20 paper:
Superpixel Segmentation with Fully Convolutional Network
Fengting Yang, Qian Sun, Hailin Jin, and Zihan Zhou
Please contact Fengting Yang (fuy34bkup@gmail.com) if you have any questions.
NEWS: The stereo application is available in our SPPSMNet repository.
Prerequisites
The training code was mainly developed and tested with python 2.7, PyTorch 0.4.1, CUDA 9, and Ubuntu 16.04.
In the test, we make use of the component connection method in SSN to enforce the connectivity
in superpixels. The code has been included in /third_paty/cython. To compile it:
cd third_party/cython/
python setup.py install --user
cd ../..
Demo
The demo script run_demo.py provides the superpixels with a grid size of 16 x 16 using our pre-trained model (in /pretrained_ckpt).
Please feel free to provide your own images by copying them into /demo/inputs, and run
python run_demo.py --data_dir=./demo/inputs --data_suffix=jpg --output=./demo
The results will be generated in a new folder under /demo called spixel_viz.
Data preparation
To generate the training and test dataset, please first download the data from the original BSDS500 dataset,
and extract it to <BSDS_DIR>. Then, run
cd data_preprocessing
python pre_process_bsd500.py --dataset=<BSDS_DIR> --dump_root=<DUMP_DIR>
python pre_process_bsd500_ori_sz.py --dataset=<BSDS_DIR> --dump_root=<DUMP_DIR>
cd ..
The code will generate three folders under the <DUMP_DIR>, named as /train, /val, and /test, and three .txt files
record the absolute path of the images, named as train.txt, val.txt, and test.txt.
Training
Once the data is prepared, we should be able to train the model by running the following command
python main.py --data=<DUMP_DIR> --savepath=<CKPT_LOG_DIR>
if we wish to continue a training process or fine-tune from a pre-trained model, we can run
python main.py --data=<DUMP_DIR> --savepath=<CKPT_LOG_DIR> --pretrained=<PATH_TO_THE_CKPT>
The code will start from the recorded status, which includes the optimizer status and epoch number.
The training log can be viewed from the tensorboard session by running
tensorboard --logdir=<CKPT_LOG_DIR> --port=8888
If everything is set up properly, reasonable segmentation should be observed after 10 epochs.
Testing
We provide test code to generate: 1) superpixel visualization and 2) the.csv files for evaluation.
To test on BSDS500, run
python run_infer_bsds.py --data_dir=<DUMP_DIR> --output=<TEST_OUTPUT_DIR> --pretrained=<PATH_TO_THE_CKPT>
To test on NYUv2, please first extract our pre-processed dataset from /nyu_test_set/nyu_preprocess_tst.tar.gz
to <NYU_TEST> , or follow the instruction on the superpixel benchmark
to generate the test dataset, and then run
python run_infer_nyu.py --data_dir=<NYU_TEST> --output=<TEST_OUTPUT_DIR> --pretrained=<PATH_TO_THE_CKPT>
To test on other datasets, please first collect all the images into one folder <CUSTOM_DIR>, and then convert them into the same
format (e.g. .png or .jpg) if necessary, and run
python run_demo.py --data_dir=<CUSTOM_DIR> --data_suffix=<IMG_SUFFIX> --output=<TEST_OUTPUT_DIR> --pretrained=<PATH_TO_THE_CKPT>
Superpixels with grid size 16 x 16 will be generated by default. To generate the superpixel with a different grid size, we simply need to
resize the images into the appropriate resolution before passing them through the code. Please refer to run_infer_nyu.py for the details.
Evaluation
We use the code from superpixel benchmark for superpixel evaluation. Detailed instruction is available in the repository, please
(1) download the code and build it accordingly;
(2) edit the variables $SUPERPIXELS, IMG_PATH and GT_PATH in /eval_spixel/my_eval.sh,
(3) run
cp /eval_spixel/my_eval.sh <path/to/the/benchmark>/examples/bash/
cd <path/to/the/benchmark>/examples/
bash my_eval.sh
several files should be generated in the map_csv folders in the corresponding test outputs;
(4) run
cd eval_spixel
python copy_resCSV.py --src=<TEST_OUTPUT_DIR> --dst=<PATH_TO_COLLECT_EVAL_RES>
(5) open /eval_spixel/plot_benchmark_curve.m , set the our1l_res_path as <PATH_TO_COLLECT_EVAL_RES> and modify the num_list
according to the test setting. The default setting is for our BSDS500 test set.;
(6) run the plot_benchmark_curve.m, the ASA Score, CO Score, and BR-BP curve of our method should
be shown on the screen. If you wish to compare our method with the others, you can first run the method and organize the data
as we state above, and uncomment the code in the plot_benchmark_curve.m to generate a similar figure shown in our papers.
Acknowledgement
Our code is developed based on the training framework provided by FlowNetPytorch.