Giter Club home page Giter Club logo

yolov4-pytorch's Introduction

YOLOV4:You Only Look Once目标检测模型在pytorch当中的实现


目录

  1. 所需环境 Environment
  2. 注意事项 Attention
  3. 小技巧的设置 TricksSet
  4. 文件下载 Download)
  5. 训练步骤 How2train
  6. 参考资料 Reference

YOLOV4的改进

  • 主干特征提取网络:DarkNet53 => CSPDarkNet53
  • 特征金字塔:SPP,PAN
  • 训练用到的小技巧:Mosaic数据增强、Label Smoothing平滑、CIOU、学习率余弦退火衰减
  • 激活函数:使用Mish激活函数
  • ……balabla

所需环境

torch==1.2.0

注意事项

代码中的yolo4_weights.pth是基于608x608的图片训练的,但是由于显存原因。我将代码中的图片大小修改成了416x416。有需要的可以修改回来。 代码中的默认anchors是基于608x608的图片的。

小技巧的设置

在train.py文件下:
1、mosaic参数可用于控制是否实现Mosaic数据增强。
2、Cosine_scheduler可用于控制是否使用学习率余弦退火衰减。
3、label_smoothing可用于控制是否Label Smoothing平滑。

文件下载

训练所需的yolo4_weights.pth可在百度网盘中下载。
链接: https://pan.baidu.com/s/1VNSYi39AaqjHVbdNpW_7sw 提取码: q2iv
yolo4_weights.pth是coco数据集的权重。
yolo4_voc_weights.pth是voc数据集的权重。

训练步骤

1、本文使用VOC格式进行训练。
2、训练前将标签文件放在VOCdevkit文件夹下的VOC2007文件夹下的Annotation中。
3、训练前将图片文件放在VOCdevkit文件夹下的VOC2007文件夹下的JPEGImages中。
4、在训练前利用voc2yolo3.py文件生成对应的txt。
5、再运行根目录下的voc_annotation.py,运行前需要将classes改成你自己的classes。

classes = ["aeroplane", "bicycle", "bird", "boat", "bottle", "bus", "car", "cat", "chair", "cow", "diningtable", "dog", "horse", "motorbike", "person", "pottedplant", "sheep", "sofa", "train", "tvmonitor"]

6、就会生成对应的2007_train.txt,每一行对应其图片位置及其真实框的位置。
7、在训练前需要修改model_data里面的voc_classes.txt文件,需要将classes改成你自己的classes。
8、运行train.py即可开始训练。

mAP目标检测精度计算更新

更新了get_gt_txt.py、get_dr_txt.py和get_map.py文件。
get_map文件克隆自https://github.com/Cartucho/mAP
具体mAP计算过程可参考:https://www.bilibili.com/video/BV1zE411u7Vw

Reference

https://github.com/qqwweee/keras-yolo3/
https://github.com/Cartucho/mAP
https://github.com/Ma-Dan/keras-yolo4

yolov4-pytorch's People

Contributors

bubbliiiing avatar

Watchers

 avatar

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.