Jetson TX1开发笔记(五)：TX1使用OpenCV3.1实时采集视频图像

# Some general development libraries
sudo apt-get install -y build-essential make cmake cmake-curses-gui g++
# libav video input/output development libraries
sudo apt-get install -y libavformat-dev libavutil-dev libswscale-dev
# Video4Linux camera development libraries
sudo apt-get install -y libv4l-dev
# Eigen3 math development libraries
sudo apt-get install -y libeigen3-dev
# OpenGL development libraries (to allow creating graphical windows)
sudo apt-get install -y libglew1.6-dev
# GTK development libraries (to allow creating graphical windows)
sudo apt-get install -y libgtk2.0-dev

cd ~
mkdir src
cd src
unzip ~/Downloads/opencv-3.1.0.zip
cd opencv-3.1.0
mkdir build
cd build
cmake -DWITH_CUDA=ON -DCUDA_ARCH_BIN="5.3" -DCUDA_ARCH_PTX="" -DBUILD_TESTS=OFF -DBUILD_PERF_TESTS=OFF -DCUDA_FAST_MATH=ON -DCMAKE_INSTALL_PREFIX=/home/ubuntu/opencv-3.1.0 ..
make -j4 install

cd ~/src/opencv-3.1.0/samples/gpu
g++ -o hog -I /home/ubuntu/opencv-3.1.0/include -O2 -g -Wall hog.cpp -L /home/ubuntu/opencv-3.1.0/lib -lopencv_core -lopencv_imgproc -l opencv_flann -l opencv_imgcodecs -lopencv_videoio -lopencv_highgui -lopencv_ml -lopencv_video -lopencv_objdetect -lopencv_photo -lopencv_features2d -lopencv_calib3d -lopencv_stitching -lopencv_videostab -lopencv_shape -lopencv_cudaobjdetect -lopencv_cudawarping -lopencv_cudaimgproc
export LD_LIBRARY_PATH=/home/ubuntu/opencv-3.1.0/lib:$LD_LIBRARY_PATH
./hog --camera 0

#include <stdio.h>  
#include <opencv2/opencv.hpp>  

using namespace cv;  
using namespace std;  

int main(int argc, char** argv)  
{  
    VideoCapture cap("nvcamerasrc ! video/x-raw(memory:NVMM), width=(int)1280, height=(int)720,format=(string)I420, framerate=(fraction)24/1 ! nvvidconv flip-method=2 ! video/x-raw, format=(string)BGRx ! videoconvert ! video/x-raw, format=(string)BGR ! appsink");  
    if (!cap.isOpened())  
    {  
        cout << "Failed to open camera." << endl;  
        return -1;  
    }  

    for(;;)  
    {  
        Mat frame;  
        cap >> frame;  
        imshow("original", frame);  
        //waitKey(1);  
        if(waitKey(30) >= 0)  
        break;  
    }  
    return 0;  
}

#if !defined (HAVE_CUDA) || defined (CUDA_DISABLER)

#if !defined (HAVE_CUDA) || defined (CUDA_DISABLER) || (CUDART_VERSION >= 8000)