Tinker Board : Python + OpenCV

출처

• Raspberry Pi 3에 opencv_contrib 포함하여 OpenCV 3.2 설치 - 멈춤보단 천천히라도
• Install guide: Raspberry Pi 3 + Raspbian Jessie + OpenCV 3
• OpenCV 설치 - MechaWiki

기존에 설치된 OpenCV 제거

OpenCV 설치 여부 확인 - 설치가 안 된경우

$ pkg-config --modversion opencv
Package opencv was not found in the pkg-config search path.
Perhaps you should add the directory containing `opencv.pc'
to the PKG_CONFIG_PATH environment variable
No package 'opencv' found

OpenCV 설치 여부 확인 - 설치 되어 있는 경우

$  pkg-config --modversion opencv
2.4.9.1

설치되어 있는 OpenCV 삭제

$ sudo apt-get purge libopencv* python-opencv
$ sudo apt-get autoremove

OS 업그레이드

$ sudo apt-get update
$ sudo apt-get upgrade

개발 도구와 관련 패키지 설치

$ sudo apt-get install build-essential cmake pkg-config

이미지(JPEG, PNG, TIFF, 기타 등등...) 처리 관련 패키지 설치

$ sudo apt-get install libjpeg-dev libtiff5-dev

비디오 처리 관련 패키지 설치

$ sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
$ sudo apt-get install libxvidcore-dev libx264-dev

Video4Linux 패키지 설치

$ sudo apt-get install libv4l-dev v4l-utils

GTK 패키지 설치

$ sudo apt-get install libgtk2.0-dev

OpenCV 관련 패키지 설치

$ sudo apt-get install libatlas-base-dev gfortran libeigen3-dev

Python 설치

$ sudo apt-get install python2.7-dev python3-dev

NumPy 설치

출처 : 예제로 배우는 파이썬 프로그래밍 - numpy 사용하기

$ sudo apt-get install python-numpy python3-numpy

OpenCV 소스 다운로드 및 압축해제

$ cd ~
$ wget -O opencv.zip https://github.com/Itseez/opencv/archive/3.2.0.zip
$ unzip opencv.zip

OpenCV Extra Modules 소스 다운로드 및 압축해제

$ wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.2.0.zip
$ unzip opencv_contrib.zip

cmake

$ cd ~/opencv-3.2.0/
$ mkdir build
$ cd build
$ cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D WITH_TBB=OFF \
-D WITH_IPP=OFF \
-D WITH_1394=OFF \
-D BUILD_WITH_DEBUG_INFO=OFF \
-D BUILD_DOCS=OFF \
-D INSTALL_C_EXAMPLES=ON \
-D INSTALL_PYTHON_EXAMPLES=ON \
-D BUILD_EXAMPLES=OFF \
-D BUILD_TESTS=OFF \
-D BUILD_PERF_TESTS=OFF \
-D ENABLE_NEON=ON \
-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.2.0/modules \
-D WITH_V4L=ON  \
-D WITH_LIBV4L=ON  \
-D WITH_FFMPEG=ON \
-D WITH_XINE=ON \
-D BUILD_NEW_PYTHON_SUPPORT=ON \
../
 
-- General configuration for OpenCV 3.2.0 =====================================
--   Version control:               unknown
-- 
--   Extra modules:
--     Location (extra):            /home/linaro/opencv_contrib-3.2.0/modules
--     Version control (extra):     unknown
-- 
--   Platform:
--     Timestamp:                   2018-08-17T16:45:11Z
--     Host:                        Linux 4.4.103+ armv7l
--     CMake:                       3.7.2
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
--     Configuration:               RELEASE
-- 
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++ Compiler:                /usr/bin/c++  (ver 6.3.0)
--     C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -mfp16-format=ieee -mfpu=neon -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
--     C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -mfp16-format=ieee -mfpu=neon -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
--     C Compiler:                  /usr/bin/cc
--     C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -mfp16-format=ieee -mfpu=neon -ffunction-sections -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
--     C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -mfp16-format=ieee -mfpu=neon -ffunction-sections -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
--     Linker flags (Release):
--     Linker flags (Debug):
--     ccache:                      NO
--     Precompiled headers:         YES
--     Extra dependencies:          /usr/lib/arm-linux-gnueabihf/libjpeg.so /usr/lib/arm-linux-gnueabihf/libpng.so /usr/lib/arm-linux-gnueabihf/libz.so /usr/lib/arm-linux-gnueabihf/libtiff.so gtk-x11-2.0 gdk-x11-2.0 pangocairo-1.0 atk-1.0 cairo gdk_pixbuf-2.0 gio-2.0 pangoft2-1.0 pango-1.0 gobject-2.0 glib-2.0 fontconfig freetype gthread-2.0 v4l1 v4l2 avcodec avformat avutil swscale dl m pthread rt
--     3rdparty dependencies:       libwebp libjasper IlmImf libprotobuf tegra_hal
-- 
--   OpenCV modules:
--     To be built:                 core flann imgproc ml photo reg surface_matching video dnn freetype fuzzy imgcodecs shape videoio highgui objdetect plot superres xobjdetect xphoto bgsegm bioinspired dpm face features2d line_descriptor saliency text calib3d ccalib datasets rgbd stereo tracking videostab xfeatures2d ximgproc aruco optflow phase_unwrapping stitching structured_light python2 python3
--     Disabled:                    world contrib_world
--     Disabled by dependency:      -
--     Unavailable:                 cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev java ts viz cnn_3dobj cvv hdf matlab sfm
-- 
--   GUI: 
--     QT:                          NO
--     GTK+ 2.x:                    YES (ver 2.24.31)
--     GThread :                    YES (ver 2.50.3)
--     GtkGlExt:                    NO
--     OpenGL support:              NO
--     VTK support:                 NO
-- 
--   Media I/O: 
--     ZLib:                        /usr/lib/arm-linux-gnueabihf/libz.so (ver 1.2.8)
--     JPEG:                        /usr/lib/arm-linux-gnueabihf/libjpeg.so (ver )
--     WEBP:                        build (ver 0.3.1)
--     PNG:                         /usr/lib/arm-linux-gnueabihf/libpng.so (ver 1.6.28)
--     TIFF:                        /usr/lib/arm-linux-gnueabihf/libtiff.so (ver 42 - 4.0.8)
--     JPEG 2000:                   build (ver 1.900.1)
--     OpenEXR:                     build (ver 1.7.1)
--     GDAL:                        NO
--     GDCM:                        NO
-- 
--   Video I/O:
--     DC1394 1.x:                  NO
--     DC1394 2.x:                  NO
--     FFMPEG:                      YES
--       avcodec:                   YES (ver 57.64.101)
--       avformat:                  YES (ver 57.56.101)
--       avutil:                    YES (ver 55.34.101)
--       swscale:                   YES (ver 4.2.100)
--       avresample:                NO
--     GStreamer:                   NO
--     OpenNI:                      NO
--     OpenNI PrimeSensor Modules:  NO
--     OpenNI2:                     NO
--     PvAPI:                       NO
--     GigEVisionSDK:               NO
--     Aravis SDK:                  NO
--     UniCap:                      NO
--     UniCap ucil:                 NO
--     V4L/V4L2:                    Using libv4l1 (ver 1.12.3) / libv4l2 (ver 1.12.3)
--     XIMEA:                       NO
--     Xine:                        NO
--     gPhoto2:                     NO
-- 
--   Parallel framework:            pthreads
-- 
--   Other third-party libraries:
--     Use IPP:                     NO
--     Use VA:                      NO
--     Use Intel VA-API/OpenCL:     NO
--     Use Lapack:                  NO
--     Use Eigen:                   NO
--     Use Cuda:                    NO
--     Use OpenCL:                  YES
--     Use OpenVX:                  NO
--     Use custom HAL:              YES (carotene (ver 0.0.1))
-- 
--   OpenCL:                        <Dynamic loading of OpenCL library>
--     Include path:                /home/linaro/opencv-3.2.0/3rdparty/include/opencl/1.2
--     Use AMDFFT:                  NO
--     Use AMDBLAS:                 NO
-- 
--   Python 2:
--     Interpreter:                 /usr/bin/python2.7 (ver 2.7.13)
--     Libraries:                   /usr/lib/arm-linux-gnueabihf/libpython2.7.so (ver 2.7.13)
--     numpy:                       /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.12.1)
--     packages path:               lib/python2.7/dist-packages
-- 
--   Python 3:
--     Interpreter:                 /usr/bin/python3 (ver 3.5.3)
--     Libraries:                   /usr/lib/arm-linux-gnueabihf/libpython3.5m.so (ver 3.5.3)
--     numpy:                       /usr/lib/python3/dist-packages/numpy/core/include (ver 1.12.1)
--     packages path:               lib/python3.5/dist-packages
-- 
--   Python (for build):            /usr/bin/python2.7
-- 
--   Java:
--     ant:                         NO
--     JNI:                         NO
--     Java wrappers:               NO
--     Java tests:                  NO
-- 
--   Matlab:                        Matlab not found or implicitly disabled
-- 
--   Tests and samples:
--     Tests:                       NO
--     Performance tests:           NO
--     C/C++ Examples:              NO
-- 
--   Install path:                  /usr/local
-- 
--   cvconfig.h is in:              /home/linaro/opencv-3.2.0/build
-- -----------------------------------------------------------------
-- 
-- Configuring done
-- Generating done
-- Build files have been written to: /home/linaro/opencv-3.2.0/build

빌드 (4 개의 코어가 있으므로 OpenCV를 더 빠르게 컴파일 할 수 있도록 -j4 옵션추가)

$ cat /proc/cpuinfo | grep processor | wc -l
4
$ make -j4

OpenCV 설치

$ sudo make install

/etc/ld.so.conf.d/ 디렉토리에 /usr/local/lib를 포함하는 설정파일이 있는지 확인

$ cat /etc/ld.so.conf.d/*
## Multiarch support
/lib/arm-linux-gnueabihf
/usr/lib/arm-linux-gnueabihf
## libc default configuration
/usr/local/lib

OpenCV 설치

$ sudo ldconfig

OpenCV 설치 확인 - 1

$ pkg-config --modversion opencv
3.2.0

OpenCV 설치 확인 - 2

$ pkg-config --libs --cflags opencv
-I/usr/local/include/opencv -I/usr/local/include -L/usr/local/lib -lopencv_stitching -lopencv_superres -lopencv_videostab -lopencv_aruco -lopencv_bgsegm -lopencv_bioinspired -lopencv_ccalib -lopencv_dpm -lopencv_freetype -lopencv_fuzzy -lopencv_line_descriptor -lopencv_optflow -lopencv_reg -lopencv_saliency -lopencv_stereo -lopencv_structured_light -lopencv_phase_unwrapping -lopencv_rgbd -lopencv_surface_matching -lopencv_tracking -lopencv_datasets -lopencv_text -lopencv_face -lopencv_plot -lopencv_dnn -lopencv_xfeatures2d -lopencv_shape -lopencv_video -lopencv_ximgproc -lopencv_calib3d -lopencv_features2d -lopencv_flann -lopencv_xobjdetect -lopencv_objdetect -lopencv_ml -lopencv_xphoto -lopencv_highgui -lopencv_videoio -lopencv_imgcodecs -lopencv_photo -lopencv_imgproc -lopencv_core

용량 확보를 위해서 다운로드 받은 소스 파일 삭제

$ cd ~
$ rm -rf opencv-3.2.0 opencv_contrib-3.2.0

얼굴인식 예제 컴파일, 실행

$ cp /usr/local/share/OpenCV/samples/cpp/facedetect.cpp ./
$ g++ -o facedetect facedetect.cpp $(pkg-config --libs --cflags opencv) 
$ ./facedetect --cascade="/usr/local/share/OpenCV/haarcascades/haarcascade_frontalface_alt.xml" --nested-cascade="/usr/local/share/OpenCV/haarcascades/haarcascade_eye_tree_eyeglasses.xml " --scale=1.3

얼굴인식 예제 실행 결과

python3에서 OpenCV 버전확인

$ python3
Python 3.5.3 (default, Jan 19 2017, 14:11:04) 
[GCC 6.3.0 20170118] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
>>> cv2.__version__
'3.2.0'

python3에서 얼굴인식 예제 실행

$ python3 /usr/local/share/OpenCV/samples/python/facedetect.py --cascade "/usr/local/share/OpenCV/haarcascades/haarcascade_frontalface_alt.xml" --nested-cascade "/usr/local/share/OpenCV/haarcascades/haarcascade_eye_tree_eyeglasses.xml" /dev/video0