mxnet-ssd.cpp

C++ object detection module for mxnet-ssd.

Note that python detection module is already included in mxnet-ssd. The goal of this repository is to create a test end for mxnet-ssd with no external dependency.

Installation

Ubuntu/Debian

Install prerequisites, via sudo apt-get install cmake git build-essentials and make sure your c++ compiler support C++11 (g++4.8 or above): g++ --version
Clone this repo recursively: git clone --recursive https://github.com/zhreshold/mxnet-ssd.cpp
Build all using script:

cd $REPO_ROOT/build
bash ./install.sh

Windows

Install prerequisite:
- cmake and git(git is optional, highly recommended), they both provide installer online.
- Install Visual Studio 2015(verified version).
Clone this repo:

git clone https://github.com/zhreshold/mxnet-ssd.cpp
git checkout win
# or you can download from github as zip file if git was not installed
# be sure to switch to branch win before download

Generate VS solution:

cd /path/to/repo/build
./create_sln_vs2015.bat
# the solution will be created in build/vc14/
# open this solution and build, the executable and dlls will be copied to /repo/build if success

OSX

Installation guide to be added.

Download the model

Download the pretrained model and unzip to the same folder as the executable. By default it's the build directory.

You can put the model any where you like, as long as you run the program with --model /path/to/model_prefix

Usage

cd $REPO_ROOT/build
./ssd ../demo/000001.jpg
# save detection image
./ssd ../demo/000004.jpg -o out.jpg
# save detection results to text file
./ssd ../demo/000002.jpg --save-result result.txt

Full usage info: ./ssd -h

Usage: ssd  [-hv] [-o <FILE>] [-m <FILE>] [-e <INT>] [--class-map <FILE>] [--width <INT>] [--height <INT>] [-r <FLOAT>] [-g <FLOAT>] [-b <FLOAT>] [-t <FLOAT>] [--gpu <INT>] [--disp-size <INT>] [--save-result <FILE>] <FILE>

  Required options:
  <FILE>                    input image

  Optional options:
  -h, --help                print this help and exit
  -v, --version             print version and exit
  -o, --out=FILE            output detection result to image
  -m, --model=FILE          load model prefix(default: deploy_ssd_300)
  -e, --epoch=INT           load model epoch(default: 1)
  --class-map=FILE          load classes from text file
  --width=INT               resize width(default: 300)
  --height=INT              resize height(default: 300)
  -r, --red=FLOAT           red mean pixel value(default: 123)
  -g, --green=FLOAT         green mean pixel value(default: 117)
  -b, --blue=FLOAT          blue mean pixel value(default: 104)
  -t, --thresh=FLOAT        visualize threshold(default: 0.5)
  --gpu=INT                 gpu id to detect with, default use cpu(default: -1)
  --disp-size=INT           display size, -1 to disable display(default: 640)
  --save-result=FILE        save result in text file

Credits

License

zhreshold/mxnet-ssd.cpp

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