基于Jetson TX1的opencv3.2版本的安装和摄像头调用例程
Data: 2017.04.25
Author: cjh
Theme: Install Opencv3.2 in Jetson TX1
由于Jetson TX1刷机后自带Opencv2.4，由于版本过低，以至于无法通过opencv调板载上的摄像头，同时在实际操作过程中发现自带摄像头API比较占CPU的资源，所以决定在不卸载Opencv2.4的基础上安装Opencv3.2，并用Opencv3.2调摄像头。
由于本人要在Jetson TX1上使用faster-rcnn，在刷机过程中尝试不安装Opencv2.4导致在识别过程中无法识别，目前还没找到原因，所以你也可以尝试同时安装两个版本。
首先先安装Opencv.3.2的依赖库
Baserequirements
sudo apt-get install build-essential
sudo apt-get install cmake git libgtk2.0-dev pkg-configlibavcodec-dev libavformat-dev libswscale-dev
GStreamersupport (recommended)
sudo apt-get install libgstreamer1.0-devlibgstreamer-plugins-base1.0-dev
Python support
sudo apt-get install python2.7-dev
sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev
OpenGL support
sudo apt-get install libgtkglext1 libgtkglext1-dev
sudo apt-get install qtbase5-dev
video4linux2support (better handling of usb cameras modes)
sudo apt-get install libv4l-dev v4l-utils qv4l2v4l2ucp
下载安装包
git clonehttps://github.com/opencv/opencv.git
也可以通过官网下载
curl -L https://github.com/opencv/opencv/archive/3.2.0.zip -o opencv-3.2.0.zip
unzip opencv-3.2.0.zip
cd opencv-3.2.0
编译
这是一个有用的cmake参数的列表，为您的OpenCV编译添加一些额外的功能，以使您的TX1工作。
required
- CMAKE_BUILD_TYPE=RELEASE compiles the release version of OpenCV
- CMAKE_INSTALL_PREFIX=/usr/local path where OpenCV will be installed
- WITH_CUDA=ON
- CUDA_ARCH_BIN="5.3" check latest version in CUDA GPUs reference
- CUDA_ARCH_PTX=""
optional
- WITH_OPENGL=ON OpenGL compatibility, requires GTK+ OpenGL Extensions the QT backend. When this guide was write, compilation faild for the combination CUDA 8.0 + OpenGL support.
- WITH_LIBV4L=ON will use video4linux2 libraries
- CUDA_FAST_MATH=ON Mathematical operations will run faster but less precise. See intrinsic mathematical functions
- ENABLE_PRECOMPILED_HEADERS=OFF your TX1 does not have enough disk space for pre-compiling everything but you can trade space required by compilation time with this flag. Other options is to cross compile from a desktop pc or to download & compile from an external device, an USB 3.0 external drive will do the work and is fast enough.
- ENABLE_NEON=ON ref
- BUILD_TESTS=OFF disable tests
- BUILD_PERF_TESTS=OFF disable performance tests
- BUILD_EXAMPLES=OFF disable examples
根据你的需求来修改下面的配置
mkdir release
cd release
cmake -D WITH_CUDA=ON -D CUDA_ARCH_BIN="5.3" -D CUDA_ARCH_PTX="" -D WITH_OPENGL=ON -DWITH_LIBV4L=ON -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
修改上面安装的路径，否则会和Opencv2.4冲突，建议在当前目录下将、/usr/local/ 修改为./opencvlib
make -j4 # ... because you want touse all your fancy TX1 cores isn't it? ;)
sudo make install
具体操作课参考http://dev.t7.ai/jetson/opencv/