opencv读取大恒相机

大恒相机真的是坑，如果你想连续保存保存图像基本会蓝屏，至于原因我还在找，感觉它的sdk做的不是很人性化，怎么说呢，用opencv读图像一点问题没有，显示也没有，但是想要连续保存就会蓝屏，真的不是很懂。

我用的代码几乎就是sdk里面doc文档的c++，但是怎么用opencv来读取图像呢，需要用到memcpy这个内存拷贝函数，代码如下

Mat curr(objImageDataPointer->GetHeight(), objImageDataPointer->GetWidth(), CV_8UC1);
void* pRaw8Buffer = NULL;
pRaw8Buffer = objImageDataPointer->ConvertToRaw8(GX_BIT_0_7);
memcpy(curr.data, pRaw8Buffer, (objImageDataPointer->GetHeight())*(objImageDataPointer->GetWidth()));
flip(curr, curr, 0);

这样就可以将存储数据转到mat上了，然后就可以显示了。但是想要连续保存，我用imwrite进行连续保存在关闭终端会蓝屏。。。难受啊。。。

好了，下面给出代码，基本参考它的工程示例

#include <iostream>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/calib3d/calib3d.hpp>
#include "stdlib.h"
#include <fstream>
using namespace std;
using namespace cv;
int j = 0;
//请用户提前配置好工程头文件目录,需要包含GalaxyIncludes.h
#include <GalaxyIncludes.h>
//用户继承掉线事件处理类
class CSampleDeviceOfflineEventHandler : public IDeviceOfflineEventHandler
{
public:
	void DoOnDeviceOfflineEvent(void* pUserParam)
	{
		cout << "收到设备掉线事件!" << endl;
	}
};
//用户继承属性更新事件处理类
class CSampleFeatureEventHandler : public IFeatureEventHandler
{
public:
	void DoOnFeatureEvent(const GxIAPICPP::gxstring&strFeatureName, void* pUserParam)
	{
		cout << "收到曝光结束事件!" << endl;
	}
};

//用户继承采集事件处理类
class CSampleCaptureEventHandler : public ICaptureEventHandler
{
public:
	void DoOnImageCaptured(CImageDataPointer&objImageDataPointer, void* pUserParam)
	{
		cout << "收到一帧图像!" << endl;
		cout << "ImageInfo: " << objImageDataPointer->GetStatus() << endl;
		cout << "ImageInfo: " << objImageDataPointer->GetWidth() << endl;
		cout << "ImageInfo: " << objImageDataPointer->GetHeight() << endl;
		cout << "ImageInfo: " << objImageDataPointer->GetPayloadSize() << endl;
		Mat curr(objImageDataPointer->GetHeight(), objImageDataPointer->GetWidth(), CV_8UC1);
		void* pRaw8Buffer = NULL;
		pRaw8Buffer = objImageDataPointer->ConvertToRaw8(GX_BIT_0_7);
		memcpy(curr.data, pRaw8Buffer, (objImageDataPointer->GetHeight())*(objImageDataPointer->GetWidth()));
		flip(curr, curr, 0);
		j++;
		char st[30];
		sprintf_s(st, 30, "%s%d%s", "./photo/", j, ".bmp");
		imwrite(st, curr);
		imshow("h", curr);
		waitKey(1);
		cout << "zhenshu" << objImageDataPointer->GetFrameID() << endl;
	}
};

int main(int argc, char* argv[])
{
	//声明事件回调对象指针
	IDeviceOfflineEventHandler* pDeviceOfflineEventHandler = NULL;///<掉线事件回调对象
	IFeatureEventHandler* pFeatureEventHandler = NULL;///<远端设备事件回调对象
	ICaptureEventHandler* pCaptureEventHandler = NULL;///<采集回调对象
//初始化
	IGXFactory::GetInstance().Init();
	for (int i = 0;i<10; i++)
	{
		gxdeviceinfo_vector vectorDeviceInfo;
		IGXFactory::GetInstance().UpdateDeviceList(1000, vectorDeviceInfo);
		if (0 == vectorDeviceInfo.size())
		{
			cout << "无可用设备!" << endl;
			break;
		}
		//打开第一台设备以及设备下面第一个流
		CGXDevicePointer ObjDevicePtr = IGXFactory::GetInstance().OpenDeviceBySN(
			vectorDeviceInfo[0].GetSN(),
			GX_ACCESS_EXCLUSIVE);
		CGXStreamPointer ObjStreamPtr = ObjDevicePtr->OpenStream(0);
		//注册设备掉线事件【目前只有千兆网系列相机支持此事件通知】
		GX_DEVICE_OFFLINE_CALLBACK_HANDLE hDeviceOffline = NULL;
		pDeviceOfflineEventHandler = new CSampleDeviceOfflineEventHandler();
		hDeviceOffline = ObjDevicePtr->RegisterDeviceOfflineCallback(pDeviceOfflineEventHandler, NULL);
		//获取远端设备属性控制器
		CGXFeatureControlPointer ObjFeatureControlPtr = ObjDevicePtr->GetRemoteFeatureControl();
		//注册远端设备事件:曝光结束事件【目前只有千兆网系列相机支持曝光结束事件】
		//选择事件源
		ObjFeatureControlPtr->GetEnumFeature("EventSelector")->SetValue("ExposureEnd");
		//使能事件
		ObjFeatureControlPtr->GetEnumFeature("EventNotification")->SetValue("On");
		GX_FEATURE_CALLBACK_HANDLE hFeatureEvent = NULL;
		pFeatureEventHandler = new CSampleFeatureEventHandler();
		hFeatureEvent = ObjFeatureControlPtr->RegisterFeatureCallback(
			"EventExposureEnd",
			pFeatureEventHandler,
			NULL);
		//注册回调采集
		pCaptureEventHandler = new CSampleCaptureEventHandler();
		ObjStreamPtr->RegisterCaptureCallback(pCaptureEventHandler, NULL);
		//发送开采命令
		ObjStreamPtr->StartGrab();
		ObjFeatureControlPtr->GetCommandFeature("AcquisitionStart")->Execute();
		//此时开采成功,控制台打印信息,直到输入任意键继续
		getchar();
		//发送停采命令
		ObjFeatureControlPtr->GetCommandFeature("AcquisitionStop")->Execute();
		ObjStreamPtr->StopGrab();
		//注销采集回调
		ObjStreamPtr->UnregisterCaptureCallback();
		//注销远端设备事件
		ObjFeatureControlPtr->UnregisterFeatureCallback(hFeatureEvent);
		//注销设备掉线事件
		ObjDevicePtr->UnregisterDeviceOfflineCallback(hDeviceOffline);
		//释放资源
		ObjStreamPtr->Close();
		ObjDevicePtr->Close();
	}
	//反初始化库
	IGXFactory::GetInstance().Uninit();
	//销毁事件回调指针
	if (NULL != pCaptureEventHandler)
	{
		delete pCaptureEventHandler;
		pCaptureEventHandler = NULL;
	}
	if (NULL != pDeviceOfflineEventHandler)
	{
		delete pDeviceOfflineEventHandler;
		pDeviceOfflineEventHandler = NULL;
	}
	if (NULL != pFeatureEventHandler)
	{
		delete pFeatureEventHandler;
		pFeatureEventHandler = NULL;
	}
	return 0;
}

我这个是连续保存多张，但是会蓝屏，直接将imwrite函数删了就不会了。。。

最后吐槽一下，国产相机的sdk开发都比较麻烦，但是便宜，只不过国外的相机直接插上就能用还是很不错的。。。

opencv读取大恒相机

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