27- SSD-based mask wearing detection project (SSD algorithm) (Project 27)

Project Highlights:

  • Target detection of mask using SSD algorithm
  • The data set used can be made by yourself

An SSD-based mask wearing detection project

SSD-based mask wearing detection project

  • Project Introduction
  • Review of SSD Algorithm Principles
  • data set collection
  • Ultra-simple SSD algorithm implementation
  • Ordinary SSD algorithm implementation
  • Project source code interpretation

Two SSD algorithm

Single Shot MultiBox Detector

SSD Network is a paper published by author Wei Liu on ECCV 2016 . For a network with an input size of 300x300, use Nvidia Titan X to achieve 74.3%mAP and 59FPS on the VOC 2007 test set. For a 512x512 network , it reached 76.9%mAP , surpassing the strongest Faster RCNN (73.2%mAP) at that time .  

2.1 Problems with Faster RCNN

  • Poor detection of small objects
  • The model is large and the detection speed is slow

2.2  Predicting targets

2.3  V GG- 16 model

2.4 Single Shot MultiBox Detector

2.5  Default Box scale and aspect settings _

2.6  Calculation of loss

2.6.1 Class loss

2.6.2 Localization loss

 

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Origin blog.csdn.net/March_A/article/details/130858178