A simple consistency training framework for semi-supervised image semantic segmentation

Related tags

Deep Learningsemi-supervised-learningsegmentation
Overview

PseudoSeg: Designing Pseudo Labels for Semantic Segmentation

PseudoSeg is a simple consistency training framework for semi-supervised image semantic segmentation, which has a simple and novel re-design of pseudo-labeling to generate well-calibrated structured pseudo labels for training with unlabeled or weakly-labeled data. It is implemented by Yuliang Zou (research intern) in 2020 Summer.

This is not an official Google product.

Instruction

Installation

  • Use a virtual environment
virtualenv -p python3 --system-site-packages env
source env/bin/activate
  • Install packages
pip install -r requirements.txt

Dataset

Create a dataset folder under the ROOT directory, then download the pre-created tfrecords for voc12 and coco, and extract them in dataset folder. You may also want to check the filenames for each split under data_splits folder.

Training

NOTE:

  • We train all our models using 16 V100 GPUs.
  • The ImageNet pre-trained models can be download here.
  • For VOC12, ${SPLIT} can be 2_clean, 4_clean, 8_clean, 16_clean_3 (representing 1/2, 1/4, 1/8, and 1/16 splits), NUM_ITERATIONS should be set to 30000.
  • For COCO, ${SPLIT} can be 32_all, 64_all, 128_all, 256_all, 512_all (representing 1/32, 1/64, 1/128, 1/256, and 1/512 splits), NUM_ITERATIONS should be set to 200000.

Supervised baseline

python train_sup.py \
  --logtostderr \
  --train_split="${SPLIT}" \
  --model_variant="xception_65" \
  --atrous_rates=6 \
  --atrous_rates=12 \
  --atrous_rates=18 \
  --output_stride=16 \
  --decoder_output_stride=4 \
  --train_crop_size="513,513" \
  --num_clones=16 \
  --train_batch_size=64 \
  --training_number_of_steps="${NUM_ITERATIONS}" \
  --fine_tune_batch_norm=true \
  --tf_initial_checkpoint="${INIT_FOLDER}/xception_65/model.ckpt" \
  --train_logdir="${TRAIN_LOGDIR}" \
  --dataset_dir="${DATASET}"

PseudoSeg (w/ unlabeled data)

python train_wss.py \
  --logtostderr \
  --train_split="${SPLIT}" \
  --train_split_cls="train_aug" \
  --model_variant="xception_65" \
  --atrous_rates=6 \
  --atrous_rates=12 \
  --atrous_rates=18 \
  --output_stride=16 \
  --decoder_output_stride=4 \
  --train_crop_size="513,513" \
  --num_clones=16 \
  --train_batch_size=64 \
  --training_number_of_steps="${NUM_ITERATIONS}" \
  --fine_tune_batch_norm=true \
  --tf_initial_checkpoint="${INIT_FOLDER}/xception_65/model.ckpt" \
  --train_logdir="${TRAIN_LOGDIR}" \
  --dataset_dir="${DATASET}"

PseudoSeg (w/ image-level labeled data)

python train_wss.py \
  --logtostderr \
  --train_split="${SPLIT}" \
  --train_split_cls="train_aug" \
  --model_variant="xception_65" \
  --atrous_rates=6 \
  --atrous_rates=12 \
  --atrous_rates=18 \
  --output_stride=16 \
  --decoder_output_stride=4 \
  --train_crop_size="513,513" \
  --num_clones=16 \
  --train_batch_size=64 \
  --training_number_of_steps="${NUM_ITERATIONS}" \
  --fine_tune_batch_norm=true \
  --tf_initial_checkpoint="${INIT_FOLDER}/xception_65/model.ckpt" \
  --train_logdir="${TRAIN_LOGDIR}" \
  --dataset_dir="${DATASET}" \
  --weakly=true

Evaluation

NOTE: ${EVAL_CROP_SIZE} should be 513,513 for VOC12, 641,641 for COCO.

python eval.py \
  --logtostderr \
  --eval_split="val" \
  --model_variant="xception_65" \
  --atrous_rates=6 \
  --atrous_rates=12 \
  --atrous_rates=18 \
  --output_stride=16 \
  --decoder_output_stride=4 \
  --eval_crop_size="${EVAL_CROP_SIZE}" \
  --checkpoint_dir="${TRAIN_LOGDIR}" \
  --eval_logdir="${EVAL_LOGDIR}" \
  --dataset_dir="${DATASET}" \
  --max_number_of_evaluations=1

Visualization

NOTE: ${VIS_CROP_SIZE} should be 513,513 for VOC12, 641,641 for COCO.

python vis.py \
  --logtostderr \
  --vis_split="val" \
  --model_variant="xception_65" \
  --atrous_rates=6 \
  --atrous_rates=12 \
  --atrous_rates=18 \
  --output_stride=16 \
  --decoder_output_stride=4 \
  --vis_crop_size="${VIS_CROP_SIZE}" \
  --checkpoint_dir="${CKPT}" \
  --vis_logdir="${VIS_LOGDIR}" \
  --dataset_dir="${PASCAL_DATASET}" \
  --also_save_raw_predictions=true

Citation

If you use this work for your research, please cite our paper.

@article{zou2020pseudoseg,
  title={PseudoSeg: Designing Pseudo Labels for Semantic Segmentation},
  author={Zou, Yuliang and Zhang, Zizhao and Zhang, Han and Li, Chun-Liang and Bian, Xiao and Huang, Jia-Bin and Pfister, Tomas},
  journal={International Conference on Learning Representations (ICLR)},
  year={2021}
}
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Google Interns
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