Pylon 以实时图像采集讲解PylonCppSDK使用流程

在工业控制当中，用到basler工业相机sdk编程，主要是使用c或者c++，当项目庞大时，又需要良好的用户界面，用C++是不错的选择。
以实例和看过的一些参照讲讲PylonCppSDK使用流程，
首先，同C一样，这里给出一个bolg链接，写的不错，http://blog.csdn.net/wenzhou1219/article/details/7543420。
从中我们知道，总的开发流程图如下：

那么，用C++开发也大抵如此。
这里我们看一个basler的cpp sample，

This sample illustrates how to grab and process images using the CInstantCamera class.
// Include files to use the PYLON API.
*#include 
*#ifdef PYLON_WIN_BUILD*
*#    include *
*#endif**

// Namespace for using pylon objects.
using namespace Pylon;

// Namespace for using cout.
using namespace std;

// Number of images to be grabbed.
static const uint32_t c_countOfImagesToGrab = 100;

int main(int argc, char* argv[])
{
    // The exit code of the sample application.
    int exitCode = 0;

    // Automagically call PylonInitialize and PylonTerminate to ensure the pylon runtime system
    // is initialized during the lifetime of this object.
    Pylon::PylonAutoInitTerm autoInitTerm;

    try
    {
        // Create an instant camera object with the camera device found first.
        CInstantCamera camera( CTlFactory::GetInstance().CreateFirstDevice());

        // Print the model name of the camera.
        cout << "Using device " << camera.GetDeviceInfo().GetModelName() << endl;

        // The parameter MaxNumBuffer can be used to control the count of buffers
        // allocated for grabbing. The default value of this parameter is 10.
        camera.MaxNumBuffer = 5;

        // Start the grabbing of c_countOfImagesToGrab images.
        // The camera device is parameterized with a default configuration which
        // sets up free-running continuous acquisition.
        camera.StartGrabbing( c_countOfImagesToGrab);

        // This smart pointer will receive the grab result data.
        CGrabResultPtr ptrGrabResult;

        // Camera.StopGrabbing() is called automatically by the RetrieveResult() method
        // when c_countOfImagesToGrab images have been retrieved.
        while ( camera.IsGrabbing())
        {
            // Wait for an image and then retrieve it. A timeout of 5000 ms is used.
            camera.RetrieveResult( 5000, ptrGrabResult, TimeoutHandling_ThrowException);

            // Image grabbed successfully?
            if (ptrGrabResult->GrabSucceeded())
            {
                // Access the image data.
                cout << "SizeX: " << ptrGrabResult->GetWidth() << endl;
                cout << "SizeY: " << ptrGrabResult->GetHeight() << endl;
                const uint8_t *pImageBuffer = (uint8_t *) ptrGrabResult->GetBuffer();
                cout << "Gray value of first pixel: " << (uint32_t) pImageBuffer[0] << endl << endl;

*#ifdef PYLON_WIN_BUILD*
                // Display the grabbed image.
                Pylon::DisplayImage(1, ptrGrabResult);
*#endif*
            }
            else
            {
                cout << "Error: " << ptrGrabResult->GetErrorCode() << " " << ptrGrabResult->GetErrorDescription() << endl;
            }
        }
    }
    catch (GenICam::GenericException &e)
    {
        // Error handling.
        cerr << "An exception occurred." << endl
        << e.GetDescription() << endl;
        exitCode = 1;
    }

    // Comment the following two lines to disable waiting on exit.
    cerr << endl << "Press Enter to exit." << endl;
    while( cin.get() != '\n');

    return exitCode;
}

把这个和上面的流程图对比理解，再看看文档和sdk的结构，理解起来就容易多了。