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All Projects → kazuto1011 → Pspnet Pytorch

kazuto1011 / Pspnet Pytorch

Licence: mit
PyTorch implementation of PSPNet

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python
139335 projects - #7 most used programming language

Labels

pytorchsemantic-segmentation

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PSPNet with PyTorch

Unofficial implementation of "Pyramid Scene Parsing Network" (https://arxiv.org/abs/1612.01105). This repository is just for caffe to pytorch model conversion and evaluation.

Requirements

  • pytorch
  • click
  • addict
  • pydensecrf
  • protobuf

Preparation

Instead of building the author's caffe implementation, you can convert off-the-shelf caffemodels to pytorch models via the caffe.proto.

1. Compile the caffe.proto for Python API

This step can be skipped. FYI.
Download the author's caffe.proto into the libs, not the one in the original caffe.

# For protoc command
pip install protobuf
# This generates ./caffe_pb2.py
protoc --python_out=. caffe.proto

2. Model conversion

  1. Find the caffemodels on the author's page (e.g. pspnet50_ADE20K.caffemodel) and store them to the data/models/ directory.
  2. Convert the caffemodels to .pth file.
python convert.py -c <PATH TO YAML>

Demo

python demo.py -c <PATH TO YAML> -i <PATH TO IMAGE>
  • With a --no-cuda option, this runs on CPU.
  • With a --crf option, you can perform a CRF postprocessing.

demo

Evaluation

PASCAL VOC2012 only. Please set the dataset path in config/voc12.yaml.

python eval.py -c config/voc12.yaml

88.1% mIoU (SS) and 88.6% mIoU (MS) on validation set.
NOTE: 3 points lower than caffe implementation. WIP

  • SS: averaged prediction with flipping (2x)
  • MS: averaged prediction with multi-scaling (6x) and flipping (2x)
  • Both: No CRF post-processing

References

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