Official implementation of the paper "Lightweight Deep CNN for Natural Image Matting via Similarity Preserving Knowledge Distillation"

Overview

Lightweight-Deep-CNN-for-Natural-Image-Matting-via-Similarity-Preserving-Knowledge-Distillation

Introduction

Accepted at IEEE Signal Processing Letters 2020

Official implementation of the paper "Lightweight Deep CNN for Natural Image Matting via Similarity Preserving Knowledge Distillation" [paper]

Donggeun Yoon, Jinsun Park, Donghyeon Cho

Requirement

  • python3
  • pytorch
  • torchvision
  • OpenCV
  • numpy
  • scipy
  • tensorboard
  • tqdm

Performace

note

  • training epochs=30
  • DIM-student's parameters are 20.2% of DIM-teacher's

Here is the results of DIM-student with and without knowledge distillation on the Adobe Image Matting Dataset:

Methods SAD MSE Grad Conn
without KD 121.77 0.058 75.36 129.55
batch similarity 124.43 0.055 74.36 132.25
spatial similarity 95.40 0.039 54.71 100.92
channel similarity 94.76 0.038 56.36 100.36
spatial+channel 84.37 0.034 47.63 89.35
batch+spatial+channel 91.30 0.037 56.20 97.20

Dataset

  1. Please contact authors requesting for the Adobe Image Matting dataset.
  2. Download images from the COCO and Pascal VOC datasets in folder data and Run the following command to composite images.
$ python pre_process.py
  1. Run the following command to seperate the composited datasets with training set and valid set.
$ python data_gen.py

Training

Download pretrained teacher model before train and place in folder pretrained. Run the following command to train with batch, spatial, channel similarity preserving knowledge distillation.

$ python train.py --batch-size 16 --KD_type batch,spatial,channel --feature_layer [1,2,3,4] --KD_weight [1,1,1]

Testing

Run the following command to evaluate BEST_checkpoint.tar.

$ python test.py

Acknowledgement

The code is built on Deep image matting (pytorch). Thanks to authors for sharing the codes.

Citation

@ARTICLE{9269400,
  author={D. {Yoon} and J. {Park} and D. {Cho}},
  journal={IEEE Signal Processing Letters}, 
  title={Lightweight Deep CNN for Natural Image Matting via Similarity-Preserving Knowledge Distillation}, 
  year={2020}
}
Owner
DongGeun-Yoon
DongGeun-Yoon
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