Dalsa 线扫相机采集

　　之前使用同事遗留代码。代码里面gige相机用“SapAcqDevice”类，采集卡用“SapAcquisition” 。现在需要更改相机增益和曝光。通过组合提升拍摄适应性。然后，因为之前同事留的坑，并且dalsa自带的gui示例没有涉及相机增益和曝光设置。所以一直绕着“SapAcquisition”这个类搜索，只找到

    BOOL b = m_Acq->GetParameter(CORACQ_PRM_CONNECTOR_EXPOSURE_INPUT,&exposureTime);

　　增益没找到“CORACQ_PRM”开头设置。只有最大最小值相关。相反，“SapAcqDevice” 设置曝光和增益很简单。只是前面先入为主，人为是gige用的类。后面问凌云，给出如下说明

　　以及如下示例：

// Allocate acquisition object

SapAcquisition *pAcq = new SapAcquisition(SapLocation (“X64-CL_1”, 0), “FrameGrabber.ccf”);

// Allocate acqDevice object

SapAcqDevice *pAcqDevice = new SapAcqDevice (SapLocation (“CameraLink_1”, 0), “CLCamera.ccf”);

// Allocate buffer object, taking settings directly from the acquisition

SapBuffer *pBuffer = new SapBuffer(2, pAcq);

// Allocate view object, images will be displayed directly on the desktop

SapView *pView = new SapView(pBuffer, SapHwndDesktop);

// Allocate transfer object to link acquisition and buffer

SapTransfer *pTransfer = new SapAcqToBuf(pAcq, pBuffer, XferCallback, pView);// 在该TrasferPair中pAcq代表该源，pBuffer代表目的地；

// Create resources for all objects

BOOL success = pAcq->Create();

success = pAcqDevice->Create();

success = pBuffer->Create();

success = pView->Create();

success = pTransfer->Create();

m_Acq->RegisterCallback(CORACQ_VAL_EVENT_TYPE_FRAME_LOST , frameLostCallback , NULL) ;

m_Acq->RegisterCallback(CORACQ_VAL_EVENT_TYPE_EXTERNAL_TRIGGER , ExtTrigCallback , NULL) ;

success = pAcq-> GetParameter(CORACQ_PRM_CROP_WIDTH , & imageWidth);

success = pAcq-> GetParameter(CORACQ_PRM_CROP_HEIGHT , & imageHeight );

int paramValue ;

success = pAcqDevice -> SetFeature(“ExposureTime”, & paramValue);

// Start a continuous transfer (live grab)

success = pTransfer->Grab();

printf("Press any key to stop grab ");

getch();

// Stop the transfer and wait (timeout = 5 seconds)

success = pTransfer->Freeze();

success = pTransfer->Wait(5000);

success = pTransfer->Abort();

printf("Press any key to terminate ");

getch();

// Release resources for all objects

success = pTransfer->Destroy();

success = pView->Destroy();

success = pBuffer->Destroy();

success = pAcqDevice ->Destroy();

success = pAcq->Destroy();

// Free all objects

delete pTransfer;

delete pView;

delete pBuffer;

delete pAcqDevice;

delete pAcq;

return 0;

　　俩个同时使用。一个是加载采集卡参数，一个是使用相机名称作为连接。上面的例子都要输入ccf。采集的ccf来源都清楚。相机的ccf如图示获得(左上角File-》另存为——》弹出的窗口选择保存文件名和保存路径)：

　　如果不想更改相机配置，使用以下构造函数

SapAcqDevice(SapLocation location = SapLocation::ServerSystem, BOOL readOnly = FALSE);

　　之类设置曝光(参数名“”)和明场（参数名，""）。

double paramValue=200，gainValue =2;
pAcqDevice -> SetFeature(“ExposureTime”, & paramValue);
pAcqDevice -> SetFeature(“Gain”, & gainValue);
//设置每个通道增益(以下代码来源版权声明：本文为CSDN博主「圆滚熊」的原创文章，　　原文链接：https://blog.csdn.net/y459541195/article/details/100706850)

　　m_AcqDevice->SetFeatureValue("GainSelector","DigitalAll");//设定总增益
　　m_AcqDevice->SetFeatureValue("Gain", dlg2.m_edit_GainAll);
　　m_AcqDevice->SetFeatureValue("GainSelector", "DigitalRed");//R通道增益
　　m_AcqDevice->SetFeatureValue("Gain", dlg2.m_edit_GainRed);
　　m_AcqDevice->SetFeatureValue("GainSelector", "DigitalGreen");//G通道增益
　　m_AcqDevice->SetFeatureValue("Gain", (double)1.0);
　　m_AcqDevice->SetFeatureValue("GainSelector", "DigitalBlue");//B通道增益
　　m_AcqDevice->SetFeatureValue("Gain", dlg2.m_edit_GainBlue);

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