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
Jingju baseline - A baseline model of our project of Beijing opera script generation

Jingju Baseline It is a baseline of our project about Beijing opera script gener

midon 1 Jan 14, 2022
Joint Learning of 3D Shape Retrieval and Deformation, CVPR 2021

Joint Learning of 3D Shape Retrieval and Deformation Joint Learning of 3D Shape Retrieval and Deformation Mikaela Angelina Uy, Vladimir G. Kim, Minhyu

Mikaela Uy 38 Oct 18, 2022
A Survey on Deep Learning Technique for Video Segmentation

A Survey on Deep Learning Technique for Video Segmentation A Survey on Deep Learning Technique for Video Segmentation Wenguan Wang, Tianfei Zhou, Fati

Tianfei Zhou 112 Dec 12, 2022
Learning based AI for playing multi-round Koi-Koi hanafuda card games. Have fun.

Koi-Koi AI Learning based AI for playing multi-round Koi-Koi hanafuda card games. Platform Python PyTorch PySimpleGUI (for the interface playing vs AI

Sanghai Guan 10 Nov 20, 2022
Official repository for Automated Learning Rate Scheduler for Large-Batch Training (8th ICML Workshop on AutoML)

Automated Learning Rate Scheduler for Large-Batch Training The official repository for Automated Learning Rate Scheduler for Large-Batch Training (8th

Kakao Brain 35 Jan 04, 2023
Code for Learning Manifold Patch-Based Representations of Man-Made Shapes, in ICLR 2021.

LearningPatches | Webpage | Paper | Video Learning Manifold Patch-Based Representations of Man-Made Shapes Dmitriy Smirnov, Mikhail Bessmeltsev, Justi

Dima Smirnov 22 Nov 14, 2022
Advanced yabai wooting scripts

Yabai Wooting scripts Installation requirements Both https://github.com/xiamaz/python-yabai-client and https://github.com/xiamaz/python-wooting-rgb ne

Max Zhao 3 Dec 31, 2021
FID calculation with proper image resizing and quantization steps

clean-fid: Fixing Inconsistencies in FID Project | Paper The FID calculation involves many steps that can produce inconsistencies in the final metric.

Gaurav Parmar 606 Jan 06, 2023
Main repository for the HackBio'2021 Virtual Internship Experience for #Team-Greider ❤️

Hello 🤟 #Team-Greider The team of 20 people for HackBio'2021 Virtual Bioinformatics Internship 💝 🖨️ 👨‍💻 HackBio: https://thehackbio.com 💬 Ask us

Siddhant Sharma 7 Oct 20, 2022
Language model Prompt And Query Archive

LPAQA: Language model Prompt And Query Archive This repository contains data and code for the paper How Can We Know What Language Models Know? Install

127 Dec 20, 2022
Title: Graduate-Admissions-Predictor

The purpose of this project is create a predictive model capable of identifying the probability of a person securing an admit based on their personal profile parameters. Simplified visualisations hav

Akarsh Singh 1 Jan 26, 2022
Sleep staging from ECG, assisted with EEG

Sleep_Staging_Knowledge Distillation This codebase implements knowledge distillation approach for ECG based sleep staging assisted by EEG based sleep

2 Dec 12, 2022
Self-Supervised Pre-Training for Transformer-Based Person Re-Identification

Self-Supervised Pre-Training for Transformer-Based Person Re-Identification [pdf] The official repository for Self-Supervised Pre-Training for Transfo

Hao Luo 116 Jan 04, 2023
These are the materials for the paper "Few-Shot Out-of-Domain Transfer Learning of Natural Language Explanations"

Few-shot-NLEs These are the materials for the paper "Few-Shot Out-of-Domain Transfer Learning of Natural Language Explanations". You can find the smal

Yordan Yordanov 0 Oct 21, 2022
Accepted at ICCV-2021: Workshop on Computer Vision for Automated Medical Diagnosis (CVAMD)

Is it Time to Replace CNNs with Transformers for Medical Images? Accepted at ICCV-2021: Workshop on Computer Vision for Automated Medical Diagnosis (C

Christos Matsoukas 80 Dec 27, 2022
This is an implementation of Googles Yogi-Optimizer in Keras (tf.keras)

Yogi-Optimizer_Keras This is an implementation of Googles Yogi-Optimizer in Keras (tf.keras) The NeurIPS-Paper can be found here: http://papers.nips.c

14 Sep 13, 2022
A collection of Google research projects related to Federated Learning and Federated Analytics.

Federated Research Federated Research is a collection of research projects related to Federated Learning and Federated Analytics. Federated learning i

Google Research 483 Jan 05, 2023
Multi-Task Temporal Shift Attention Networks for On-Device Contactless Vitals Measurement (NeurIPS 2020)

MTTS-CAN: Multi-Task Temporal Shift Attention Networks for On-Device Contactless Vitals Measurement Paper Xin Liu, Josh Fromm, Shwetak Patel, Daniel M

Xin Liu 106 Dec 30, 2022
Source Code for AAAI 2022 paper "Graph Convolutional Networks with Dual Message Passing for Subgraph Isomorphism Counting and Matching"

Graph Convolutional Networks with Dual Message Passing for Subgraph Isomorphism Counting and Matching This repository is an official implementation of

HKUST-KnowComp 13 Sep 08, 2022
Bringing Computer Vision and Flutter together , to build an awesome app !!

Bringing Computer Vision and Flutter together , to build an awesome app !! Explore the Directories Flutter · Machine Learning Table of Contents About

Padmanabha Banerjee 14 Apr 07, 2022