LEDNet: A Lightweight Encoder-Decoder Network for Real-time Semantic Segmentation

Overview

LEDNet: A Lightweight Encoder-Decoder Network for Real-time Semantic Segmentation

python-image pytorch-image

Table of Contents:

Introduction

This project contains the code (Note: The code is test in the environment with python=3.6, cuda=9.0, PyTorch-0.4.1, also support Pytorch-0.4.1+) for: LEDNet: A Lightweight Encoder-Decoder Network for Real-time Semantic Segmentation by Yu Wang.

The extensive computational burden limits the usage of CNNs in mobile devices for dense estimation tasks, a.k.a semantic segmentation. In this paper, we present a lightweight network to address this problem, namely **LEDNet**, which employs an asymmetric encoder-decoder architecture for the task of real-time semantic segmentation.More specifically, the encoder adopts a ResNet as backbone network, where two new operations, channel split and shuffle, are utilized in each residual block to greatly reduce computation cost while maintaining higher segmentation accuracy. On the other hand, an attention pyramid network (APN) is employed in the decoder to further lighten the entire network complexity. Our model has less than 1M parameters, and is able to run at over 71 FPS on a single GTX 1080Ti GPU card. The comprehensive experiments demonstrate that our approach achieves state-of-the-art results in terms of speed and accuracy trade-off on Cityscapes dataset. and becomes an effective method for real-time semantic segmentation tasks.

Project-Structure

├── datasets  # contains all datasets for the project
|  └── cityscapes #  cityscapes dataset
|  |  └── gtCoarse #  Coarse cityscapes annotation
|  |  └── gtFine #  Fine cityscapes annotation
|  |  └── leftImg8bit #  cityscapes training image
|  └── cityscapesscripts #  cityscapes dataset label convert scripts!
├── utils
|  └── dataset.py # dataloader for cityscapes dataset
|  └── iouEval.py # for test 'iou mean' and 'iou per class'
|  └── transform.py # data preprocessing
|  └── visualize.py # Visualize with visdom 
|  └── loss.py # loss function 
├── checkpoint
|  └── xxx.pth # pretrained models encoder form ImageNet
├── save
|  └── xxx.pth # trained models form scratch 
├── imagenet-pretrain
|  └── lednet_imagenet.py # 
|  └── main.py # 
├── train
|  └── lednet.py  # model definition for semantic segmentation
|  └── main.py # train model scripts
├── test
|  |  └── dataset.py 
|  |  └── lednet.py # model definition
|  |  └── lednet_no_bn.py # Remove the BN layer in model definition
|  |  └── eval_cityscapes_color.py # Test the results to generate RGB images
|  |  └── eval_cityscapes_server.py # generate result uploaded official server
|  |  └── eval_forward_time.py # Test model inference time
|  |  └── eval_iou.py 
|  |  └── iouEval.py 
|  |  └── transform.py 

Installation

  • Python 3.6.x. Recommended using Anaconda3
  • Set up python environment
pip3 install -r requirements.txt
  • Env: PyTorch_0.4.1; cuda_9.0; cudnn_7.1; python_3.6,

  • Clone this repository.

git clone https://github.com/xiaoyufenfei/LEDNet.git
cd LEDNet-master

Datasets

├── leftImg8bit
│   ├── train
│   ├──  val
│   └── test
├── gtFine
│   ├── train
│   ├──  val
│   └── test
├── gtCoarse
│   ├── train
│   ├── train_extra
│   └── val

Training-LEDNet

  • For help on the optional arguments you can run: python main.py -h

  • By default, we assume you have downloaded the cityscapes dataset in the ./data/cityscapes dir.

  • To train LEDNet using the train/main.py script the parameters listed in main.py as a flag or manually change them.

python main.py --savedir logs --model lednet --datadir path/root_directory/  --num-epochs xx --batch-size xx ...

Resuming-training-if-decoder-part-broken

  • for help on the optional arguments you can run: python main.py -h
python main.py --savedir logs --name lednet --datadir path/root_directory/  --num-epochs xx --batch-size xx --decoder --state "../save/logs/model_best_enc.pth.tar"...

Testing

  • the trained models of training process can be found at here. This may not be the best one, you can train one from scratch by yourself or Fine-tuning the training decoder with model encoder pre-trained on ImageNet, For instance
more details refer ./test/README.md

Results

  • Please refer to our article for more details.
Method Dataset Fine Coarse IoU_cla IoU_cat FPS
LEDNet cityscapes yes yes 70.6​% 87.1​%​ 70​+​

qualitative segmentation result examples:

Citation

If you find this code useful for your research, please use the following BibTeX entry.

 @article{wang2019lednet,
  title={LEDNet: A Lightweight Encoder-Decoder Network for Real-time Semantic Segmentation},
  author={Wang, Yu and Zhou, Quan and Liu, Jia and Xiong,Jian and Gao, Guangwei and Wu, Xiaofu, and Latecki Jan Longin},
  journal={arXiv preprint arXiv:1905.02423},
  year={2019}
}

Tips

  • Limited by GPU resources, the project results need to be further improved...
  • It is recommended to pre-train Encoder on ImageNet and then Fine-turning Decoder part. The result will be better.

Reference

  1. Deep residual learning for image recognition
  2. Enet: A deep neural network architecture for real-time semantic segmentation
  3. Erfnet: Efficient residual factorized convnet for real-time semantic segmentation
  4. Shufflenet: An extremely efficient convolutional neural network for mobile devices
Owner
Yu Wang
I am a graduate student in CV, my research areas center around computer vision and deep learning.
Yu Wang
EMNLP 2021 paper The Devil is in the Detail: Simple Tricks Improve Systematic Generalization of Transformers.

Codebase for training transformers on systematic generalization datasets. The official repository for our EMNLP 2021 paper The Devil is in the Detail:

Csordás Róbert 57 Nov 21, 2022
Using LSTM write Tang poetry

本教程将通过一个示例对LSTM进行介绍。通过搭建训练LSTM网络,我们将训练一个模型来生成唐诗。本文将对该实现进行详尽的解释,并阐明此模型的工作方式和原因。并不需要过多专业知识,但是可能需要新手花一些时间来理解的模型训练的实际情况。为了节省时间,请尽量选择GPU进行训练。

56 Dec 15, 2022
use machine learning to recognize gesture on raspberrypi

Raspberrypi_Gesture-Recognition use machine learning to recognize gesture on raspberrypi 說明 利用 tensorflow lite 訓練手部辨識模型 分辨 "剪刀"、"石頭"、"布" 之手勢 再將訓練模型匯入

1 Dec 10, 2021
Stock-Prediction - prediction of stock market movements using sentiment analysis and deep learning.

Stock-Prediction- In this project, we aim to enhance the prediction of stock market movements using sentiment analysis and deep learning. We divide th

5 Jan 25, 2022
HomoInterpGAN - Homomorphic Latent Space Interpolation for Unpaired Image-to-image Translation

HomoInterpGAN Homomorphic Latent Space Interpolation for Unpaired Image-to-image Translation (CVPR 2019, oral) Installation The implementation is base

Ying-Cong Chen 99 Nov 15, 2022
Probabilistic Tensor Decomposition of Neural Population Spiking Activity

Probabilistic Tensor Decomposition of Neural Population Spiking Activity Matlab (recommended) and Python (in developement) implementations of Soulat e

Hugo Soulat 6 Nov 30, 2022
Segmentation for medical image.

EfficientSegmentation Introduction EfficientSegmentation is an open source, PyTorch-based segmentation framework for 3D medical image. Features A whol

68 Nov 28, 2022
Supplementary code for the experiments described in the 2021 ISMIR submission: Leveraging Hierarchical Structures for Few Shot Musical Instrument Recognition.

Music Trees Supplementary code for the experiments described in the 2021 ISMIR submission: Leveraging Hierarchical Structures for Few Shot Musical Ins

Hugo Flores García 32 Nov 22, 2022
👐OpenHands : Making Sign Language Recognition Accessible (WiP 🚧👷‍♂️🏗)

👐 OpenHands: Sign Language Recognition Library Making Sign Language Recognition Accessible Check the documentation on how to use the library: ReadThe

AI4Bhārat 69 Dec 12, 2022
Joint Gaussian Graphical Model Estimation: A Survey

Joint Gaussian Graphical Model Estimation: A Survey Test Models Fused graphical lasso [1] Group graphical lasso [1] Graphical lasso [1] Doubly joint s

Koyejo Lab 1 Aug 10, 2022
Python SDK for building, training, and deploying ML models

Overview of Kubeflow Fairing Kubeflow Fairing is a Python package that streamlines the process of building, training, and deploying machine learning (

Kubeflow 325 Dec 13, 2022
Self-Supervised Learning with Kernel Dependence Maximization

Self-Supervised Learning with Kernel Dependence Maximization This is the code for SSL-HSIC, a self-supervised learning loss proposed in the paper Self

DeepMind 29 Dec 29, 2022
SAGE: Sensitivity-guided Adaptive Learning Rate for Transformers

SAGE: Sensitivity-guided Adaptive Learning Rate for Transformers This repo contains our codes for the paper "No Parameters Left Behind: Sensitivity Gu

Chen Liang 23 Nov 07, 2022
Spatiotemporal resampling methods for mlr3

mlr3spatiotempcv Package website: release | dev Spatiotemporal resampling methods for mlr3. This package extends the mlr3 package framework with spati

45 Nov 21, 2022
PyTorch implementation of "Representing Shape Collections with Alignment-Aware Linear Models" paper.

deep-linear-shapes PyTorch implementation of "Representing Shape Collections with Alignment-Aware Linear Models" paper. If you find this code useful i

Romain Loiseau 27 Sep 24, 2022
《Image2Reverb: Cross-Modal Reverb Impulse Response Synthesis》(2021)

Image2Reverb Image2Reverb is an end-to-end neural network that generates plausible audio impulse responses from single images of acoustic environments

Nikhil Singh 48 Nov 27, 2022
render sprites into your desktop environment as shaped windows using GTK

spritegtk render static or animated sprites into your desktop environment as dynamic shaped windows using GTK requires pycairo and PYGobject: pip inst

hermit 20 Oct 27, 2022
This repository includes code of my study about Asynchronous in Frequency domain of GAN images.

Exploring the Asynchronous of the Frequency Spectra of GAN-generated Facial Images Binh M. Le & Simon S. Woo, "Exploring the Asynchronous of the Frequ

4 Aug 06, 2022
Pcos-prediction - Predicts the likelihood of Polycystic Ovary Syndrome based on patient attributes and symptoms

PCOS Prediction 🥼 Predicts the likelihood of Polycystic Ovary Syndrome based on

Samantha Van Seters 1 Jan 10, 2022
Pytorch implementation of the paper "COAD: Contrastive Pre-training with Adversarial Fine-tuning for Zero-shot Expert Linking."

Expert-Linking Pytorch implementation of the paper "COAD: Contrastive Pre-training with Adversarial Fine-tuning for Zero-shot Expert Linking." This is

BoChen 12 Jan 01, 2023