Face-detection-Landmark-Raspberry-Pi-32-64-bits

A fast face detection with landmarks running on a bare Raspberry Pi 4.

This C ++ application detects faces in a scene. At the same time, the characteristic landmarks are located so that you can use them as input for a face recognition algorithm. (see: Face recognition).

Benchmark.

RPi 4 64-OS 1950 MHz	RPi 4 64-OS 1500 MHz	Jetson Nano 2015 MHz	Jetson Nano 1479 MHz
20 mS	23 mS	11 mS	14 mS

Dependencies.

To run the application on a 64 OS, you have to:

A raspberry Pi 4 with a 64-bit operating system. It can be the Raspberry 64-bit OS, or Ubuntu 18.04 / 20.04. (https://qengineering.eu/install-raspberry-64-os.html)
The Tencent ncnn framework installed. (https://qengineering.eu/install-ncnn-on-raspberry-pi-4.html)
OpenCV 64 bit installed. (https://qengineering.eu/install-opencv-4.3-on-raspberry-64-os.html)
Code::Blocks installed.

To run the application on a 32 OS, you need:

The Tencent ncnn framework installed. (https://qengineering.eu/install-ncnn-on-raspberry-pi-4.html)
OpenCV 32 bit installed. (https://qengineering.eu/install-opencv-4.3-on-raspberry-pi-4.html)
Code::Blocks installed.

Running the app.

To extract and run the network in Code::Blocks
$ mkdir MyDir
$ cd MyDir
$ wget https://github.com/Qengineering/Face-detection-Landmark-Raspberry-Pi-32-64-bits/archive/refs/heads/main.zip
$ unzip -j master.zip
Remove master.zip, LICENSE and README.md as they are no longer needed.
$ rm master.zip
$ rm README.md

Your MyDir/ncnn folder must now look like this:
9.jpg
11.jpg
Walk2.mp4 (demo video)
FaceLandmark.cpb (code::blocks project file)
main.cpp (main example file)
FaceDetector.cpp (Ultra face class)
FaceDetector.hpp (Ultra face class)
face.bin (ncnn model)
face.param (ncnn topology file)

WebCam.

If you want to use a camera please alter line 22 in main.cpp to
cv::VideoCapture cap(0); //WebCam
If you want to run a movie please alter line 22 in main.cpp to
cv::VideoCapture cap("Walks2.mp4"); //Movie

Thanks.

https://github.com/Tencent/ncnn
https://github.com/nihui
https://github.com/Linzaer/Ultra-Light-Fast-Generic-Face-Detector-1MB
https://github.com/biubug6/Face-Detector-1MB-with-landmark/tree/master/Face_Detector_ncnn

undefined reference error compiling main.cpp

Command:
g++ main.cpp

Error:
/usr/bin/ld: /tmp/ccfhTjVl.o: in function main': main.cpp:(.text+0xc0): undefined reference to Detector::Detector(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, std::cxx11::basic_string<char, std::char_traits, std::allocator > const&)'
/usr/bin/ld: main.cpp:(.text+0x114): undefined reference to cv::VideoCapture::VideoCapture(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)' /usr/bin/ld: main.cpp:(.text+0x12c): undefined reference to cv::VideoCapture::isOpened() const'
/usr/bin/ld: main.cpp:(.text+0x1a4): undefined reference to cv::VideoCapture::operator>>(cv::Mat&)' /usr/bin/ld: main.cpp:(.text+0x284): undefined reference to cv::resize(cv::InputArray const&, cv::OutputArray const&, cv::Size, double, double, int)'
/usr/bin/ld: main.cpp:(.text+0x2b4): undefined reference to Detector::Detect(cv::Mat&, std::vector<bbox, std::allocator<bbox> >&)' /usr/bin/ld: main.cpp:(.text+0x3f8): undefined reference to cv::rectangle(cv::InputOutputArray const&, cv::Rect, cv::Scalar const&, int, int, int)'
/usr/bin/ld: main.cpp:(.text+0x498): undefined reference to cv::circle(cv::_InputOutputArray const&, cv::Point_<int>, int, cv::Scalar_<double> const&, int, int, int)' /usr/bin/ld: main.cpp:(.text+0x540): undefined reference to cv::circle(cv::InputOutputArray const&, cv::Point, int, cv::Scalar const&, int, int, int)'
/usr/bin/ld: main.cpp:(.text+0x5e8): undefined reference to cv::circle(cv::_InputOutputArray const&, cv::Point_<int>, int, cv::Scalar_<double> const&, int, int, int)' /usr/bin/ld: main.cpp:(.text+0x688): undefined reference to cv::circle(cv::InputOutputArray const&, cv::Point, int, cv::Scalar const&, int, int, int)'
/usr/bin/ld: main.cpp:(.text+0x728): undefined reference to cv::circle(cv::_InputOutputArray const&, cv::Point_<int>, int, cv::Scalar_<double> const&, int, int, int)' /usr/bin/ld: main.cpp:(.text+0x81c): undefined reference to cv::format[abi:cxx11](char const*, ...)'
/usr/bin/ld: main.cpp:(.text+0x880): undefined reference to cv::putText(cv::_InputOutputArray const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::Point_<int>, int, double, cv::Scalar_<double>, int, int, bool)' /usr/bin/ld: main.cpp:(.text+0x8cc): undefined reference to cv::imshow(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, cv::_InputArray const&)'
/usr/bin/ld: main.cpp:(.text+0x8ec): undefined reference to cv::waitKey(int)' /usr/bin/ld: main.cpp:(.text+0x93c): undefined reference to cv::destroyAllWindows()'
/usr/bin/ld: main.cpp:(.text+0x948): undefined reference to cv::VideoCapture::~VideoCapture()' /usr/bin/ld: main.cpp:(.text+0x950): undefined reference to Detector::~Detector()'
/usr/bin/ld: main.cpp:(.text+0xa9c): undefined reference to cv::VideoCapture::~VideoCapture()' /usr/bin/ld: main.cpp:(.text+0xaa4): undefined reference to Detector::~Detector()'
/usr/bin/ld: /tmp/ccfhTjVl.o: in function cv::Mat::~Mat()': main.cpp:(.text._ZN2cv3MatD2Ev[_ZN2cv3MatD5Ev]+0x34): undefined reference to cv::fastFree(void*)'
/usr/bin/ld: /tmp/ccfhTjVl.o: in function cv::Mat::release()': main.cpp:(.text._ZN2cv3Mat7releaseEv[_ZN2cv3Mat7releaseEv]+0x54): undefined reference to cv::Mat::deallocate()'
collect2: error: ld returned 1 exit status

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