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PaddleDetection 2.0 is ready! Dygraph mode is set by default and static graph code base is here

Highly effective PPYOLO v2 and ultra lightweight PPYOLO tiny are released! link

SOTA Anchor Free model -- PAFNet is released! link

Recent Activity

A series of live lectures on detailed explanation of industrial-level object detection technology is about to be launched,to see how powerful PP-YOLOv2 surpasses YOLOv5.

Welcome to the PPYLOv2 &Tiny Tech Seminar Group

Course Schedule

Live Link

  • May 13rd 19:00-20:00
    • Topic: Detailed Interpretation of Industrial-level Object Detection Algorithms
  • May 14th 19:00-20:00
    • Topic: Analysis and Application of 1.3M Ultra-lightweight Object Detection Algorithm
  • May 21st 20:00-21:00
    • Topic: The Model Development Exercise of Small Target Detection Under Complex Background

Course Link

0【PaddleDetection2.0 Special】Quick Experience of New Version

1【PaddleDetection2.0 Special】How to Customize Dataset

2【PaddleDetection2.0 Special】Quick Start PP-YOLOv2

3【PaddleDetection2.0 Special】Quick Start PP-YOLO tiny

4【PaddleDetection2.0 Special】Quick Start S2ANet

5【PaddleDetection2.0 Special】Fast Implementation of Pedestrian Detection

6【PaddleDetection2.0 Special】Fast Implementation of Face Detection


PaddleDetection is an end-to-end object detection development kit based on PaddlePaddle, which aims to help developers in the whole development of constructing, training, optimizing and deploying detection models in a faster and better way.

PaddleDetection implements varied mainstream object detection algorithms in modular design, and provides wealthy data augmentation methods, network components(such as backbones), loss functions, etc., and integrates abilities of model compression and cross-platform high-performance deployment.

After a long time of industry practice polishing, PaddleDetection has had smooth and excellent user experience, it has been widely used by developers in more than ten industries such as industrial quality inspection, remote sensing image object detection, automatic inspection, new retail, Internet, and scientific research.

Product news

  • 2021.04.14: Release release/2.0 version. Dygraph mode in PaddleDetection is fully supported. Cover all the algorithm of static graph and update the performance of mainstream detection models. Release PP-YOLO v2 and PP-YOLO tiny, enhanced anchor free model PAFNet and S2ANet which is aimed at rotation object detection.Please refer to PaddleDetection for details.
  • 2020.02.07: Release release/2.0-rc version, Please refer to PaddleDetection for details.


  • Rich Models PaddleDetection provides rich of models, including 100+ pre-trained models such as object detection, instance segmentation, face detection etc. It covers a variety of global competition champion schemes.

  • Highly Flexible: Components are designed to be modular. Model architectures, as well as data preprocess pipelines and optimization strategies, can be easily customized with simple configuration changes.

  • Production Ready: From data augmentation, constructing models, training, compression, depolyment, get through end to end, and complete support for multi-architecture, multi-device deployment for cloud and edge device.

  • High Performance: Based on the high performance core of PaddlePaddle, advantages of training speed and memory occupation are obvious. FP16 training and multi-machine training are supported as well.

Overview of Kit Structures

Architectures Backbones Components Data Augmentation
  • Two-Stage Detection
    • Faster RCNN
    • FPN
    • Cascade-RCNN
    • Libra RCNN
    • Hybrid Task RCNN
    • PSS-Det RCNN
  • One-Stage Detection
    • RetinaNet
    • YOLOv3
    • YOLOv4
    • PP-YOLO
    • SSD
  • Anchor Free
    • CornerNet-Squeeze
    • FCOS
    • TTFNet
  • Instance Segmentation
    • Mask RCNN
    • SOLOv2
  • Face-Detction
    • FaceBoxes
    • BlazeFace
    • BlazeFace-NAS
  • ResNet(&vd)
  • ResNeXt(&vd)
  • SENet
  • Res2Net
  • HRNet
  • Hourglass
  • CBNet
  • GCNet
  • DarkNet
  • CSPDarkNet
  • VGG
  • MobileNetv1/v3
  • GhostNet
  • Efficientnet
  • Common
    • Sync-BN
    • Group Norm
    • DCNv2
    • Non-local
  • FPN
    • BiFPN
    • BFP
    • HRFPN
    • ACFPN
  • Loss
    • Smooth-L1
    • GIoU/DIoU/CIoU
    • IoUAware
  • Post-processing
    • SoftNMS
    • MatrixNMS
  • Speed
    • FP16 training
    • Multi-machine training
  • Resize
  • Flipping
  • Expand
  • Crop
  • Color Distort
  • Random Erasing
  • Mixup
  • Cutmix
  • Grid Mask
  • Auto Augment

Overview of Model Performance

The relationship between COCO mAP and FPS on Tesla V100 of representative models of each architectures and backbones.


  • CBResNet stands for Cascade-Faster-RCNN-CBResNet200vd-FPN, which has highest mAP on COCO as 53.3%

  • Cascade-Faster-RCNN stands for Cascade-Faster-RCNN-ResNet50vd-DCN, which has been optimized to 20 FPS inference speed when COCO mAP as 47.8% in PaddleDetection models

  • PP-YOLO achieves mAP of 45.9% on COCO and 72.9FPS on Tesla V100. Both precision and speed surpass YOLOv4

  • PP-YOLO v2 is optimized version of PP-YOLO which has mAP of 49.5% and 68.9FPS on Tesla V100

  • All these models can be get in Model Zoo


Get Started

Advanced Tutorials

Model Zoo



v2.0 was released at 04/2021, fully support dygraph version, which add BlazeFace, PSS-Det and plenty backbones, release PP-YOLOv2, PP-YOLO tiny and S2ANet, support model distillation and VisualDL, add inference benchmark, etc. Please refer to change log for details.


PaddleDetection is released under the Apache 2.0 license.


Contributions are highly welcomed and we would really appreciate your feedback!!


title={PaddleDetection, Object detection and instance segmentation toolkit based on PaddlePaddle.},
author={PaddlePaddle Authors},
howpublished = {\url{https://github.com/PaddlePaddle/PaddleDetection}},

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PaddleDetection的目的是为工业界和学术界提供丰富、易用的目标检测模型 spread retract


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