Estaba queriendo jugar un poco con OpenCV, asi que manos a la obra.
Obs:
- Usamos Ubuntu Focal Fossa de 20.04 LTS.
- Instalamos OpenCV 4.5
Entramos a la terminal y tecleamos lo siguiente:
sudo apt update sudo apt install git gcc g++ ffmpeg cmake make python3-dev python3-numpy libavcodec-dev libavformat-dev libswscale-dev libgstreamer-plugins-base1.0-dev libgstreamer1.0-dev libgtk-3-dev libpng-dev libjpeg-dev libopenexr-dev libtiff-dev libwebp-dev cd ~/ mkdir repositoriosGit cd repositoriosGit git clone https://github.com/opencv/opencv.git git clone https://github.com/opencv/opencv_contrib.git cd opencv mkdir build cd build cmake -D CMAKE_BUILD_TYPE=RELEASE \ -D CMAKE_INSTALL_PREFIX=/usr/local \ -D INSTALL_C_EXAMPLES=ON \ -D INSTALL_PYTHON_EXAMPLES=ON \ -D OPENCV_GENERATE_PKGCONFIG=ON \ -D OPENCV_EXTRA_MODULES_PATH=~/repositoriosGit/opencv_contrib/modules/ \ -D BUILD_EXAMPLES=ON ..
Sale por pantalla:
-- General configuration for OpenCV 4.5.3-dev ===================================== -- Version control: 4.5.3-178-g5aa7435d25 -- -- Extra modules: -- Location (extra): /home/proyectosbeta/repositoriosGit/opencv_contrib/modules -- Version control (extra): 4.5.3-19-gb83d965e -- -- Platform: -- Timestamp: 2021-09-04T11:28:58Z -- Host: Linux 5.11.0-27-generic x86_64 -- CMake: 3.16.3 -- CMake generator: Unix Makefiles -- CMake build tool: /usr/bin/make -- Configuration: RELEASE -- -- CPU/HW features: -- Baseline: SSE SSE2 SSE3 -- requested: SSE3 -- Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX -- requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX -- SSE4_1 (17 files): + SSSE3 SSE4_1 -- SSE4_2 (2 files): + SSSE3 SSE4_1 POPCNT SSE4_2 -- FP16 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX -- AVX (5 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX -- AVX2 (32 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 -- AVX512_SKX (8 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX -- -- C/C++: -- Built as dynamic libs?: YES -- C++ standard: 11 -- C++ Compiler: /usr/bin/c++ (ver 9.3.0) -- 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 -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -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 -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -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=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG -- C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG -- Linker flags (Release): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed -- Linker flags (Debug): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed -- ccache: NO -- Precompiled headers: NO -- Extra dependencies: dl m pthread rt -- 3rdparty dependencies: -- -- OpenCV modules: -- To be built: aruco barcode bgsegm bioinspired calib3d ccalib core datasets dnn dnn_objdetect dnn_superres dpm face features2d flann freetype fuzzy gapi hfs highgui img_hash imgcodecs imgproc intensity_transform line_descriptor mcc ml objdetect optflow phase_unwrapping photo plot python3 quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab wechat_qrcode xfeatures2d ximgproc xobjdetect xphoto -- Disabled: world -- Disabled by dependency: - -- Unavailable: alphamat cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv hdf java julia matlab ovis python2 sfm viz -- Applications: tests perf_tests examples apps -- Documentation: NO -- Non-free algorithms: NO -- -- GUI: GTK3 -- GTK+: YES (ver 3.24.20) -- GThread : YES (ver 2.64.6) -- GtkGlExt: NO -- VTK support: NO -- -- Media I/O: -- ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.11) -- JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver 80) -- WEBP: /usr/lib/x86_64-linux-gnu/libwebp.so (ver encoder: 0x020e) -- PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.6.37) -- TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 / 4.1.0) -- JPEG 2000: build (ver 2.4.0) -- OpenEXR: /usr/lib/x86_64-linux-gnu/libImath.so /usr/lib/x86_64-linux-gnu/libIlmImf.so /usr/lib/x86_64-linux-gnu/libIex.so /usr/lib/x86_64-linux-gnu/libHalf.so /usr/lib/x86_64-linux-gnu/libIlmThread.so (ver 2_3) -- HDR: YES -- SUNRASTER: YES -- PXM: YES -- PFM: YES -- -- Video I/O: -- DC1394: NO -- FFMPEG: YES -- avcodec: YES (58.54.100) -- avformat: YES (58.29.100) -- avutil: YES (56.31.100) -- swscale: YES (5.5.100) -- avresample: NO -- GStreamer: YES (1.16.2) -- v4l/v4l2: YES (linux/videodev2.h) -- -- Parallel framework: pthreads -- -- Trace: YES (with Intel ITT) -- -- Other third-party libraries: -- Intel IPP: 2020.0.0 Gold [2020.0.0] -- at: /home/proyectosbeta/repositoriosGit/opencv/build/3rdparty/ippicv/ippicv_lnx/icv -- Intel IPP IW: sources (2020.0.0) -- at: /home/proyectosbeta/repositoriosGit/opencv/build/3rdparty/ippicv/ippicv_lnx/iw -- VA: NO -- Lapack: NO -- Eigen: NO -- Custom HAL: NO -- Protobuf: build (3.5.1) -- -- OpenCL: YES (no extra features) -- Include path: /home/proyectosbeta/repositoriosGit/opencv/3rdparty/include/opencl/1.2 -- Link libraries: Dynamic load -- -- Python 3: -- Interpreter: /usr/bin/python3 (ver 3.8.10) -- Libraries: /usr/lib/x86_64-linux-gnu/libpython3.8.so (ver 3.8.10) -- numpy: /usr/lib/python3/dist-packages/numpy/core/include (ver 1.17.4) -- install path: lib/python3.8/dist-packages/cv2/python-3.8 -- -- Python (for build): /usr/bin/python2.7 -- -- Java: -- ant: NO -- JNI: NO -- Java wrappers: NO -- Java tests: NO -- -- Install to: /usr/local -- ----------------------------------------------------------------- -- -- Configuring done -- Generating done -- Build files have been written to: /home/proyectosbeta/repositoriosGit/opencv/build
Volvemos a teclear en la terminal:
make -j8 sudo make install
Verificamos C++ bindings:
pkg-config --modversion opencv4
Sale por pantalla:
4.5.3
Probamos con python. Volvemos a teclear en la terminal:
python3 -c "import cv2; print(cv2.__version__)"
Sale por pantalla:
4.5.3-dev
Imagen destacada: OpenCV
Fuente 1: https://computingforgeeks.com/how-to-install-opencv-on-ubuntu-linux/
Fuente 2: https://linuxize.com/post/how-to-install-opencv-on-ubuntu-20-04/