AVT Mako/Manta面阵相机开发小结

开发环境：VS2015+Qt5.8，以官方所给asynchronousopencvrecorder的demo为例。

核心代码初解：

获取相机

VmbErrorType err = m_ApiController.StartUp(); 

初始化某个相机参数,m_cameras为列表容器，nRow为int，可以手动设置。

err = m_ApiController.StartContinuousImageAcquisition(m_cameras[nRow]);

以上函数关键代码,设置FPS，曝光时间，ROI区域等，更多的可以通过相机软件保存相机参数，到参数文件里面找相应的特征名。

     m_FPS = 100.0;
     FeaturePtr pFeatureFPS ;
     res = SP_ACCESS( m_pCamera )->GetFeatureByName("AcquisitionFrameRateAbs", pFeatureFPS);
     if( VmbErrorSuccess != res)
     {
         res = SP_ACCESS( m_pCamera )->GetFeatureByName("AcquisitionFrameRate", pFeatureFPS);
     }
     if( VmbErrorSuccess == res )
     {
         res = SP_ACCESS(pFeatureFPS)->GetValue( m_FPS );
     }
    m_exposure = 2200.0;
	FeaturePtr pFeature_exposure;
	res = SP_ACCESS(m_pCamera)->GetFeatureByName("Exposure Time", pFeature_exposure);
	if (VmbErrorSuccess != res)
	{
		res = SP_ACCESS(m_pCamera)->GetFeatureByName("ExposureTimeAbs", pFeature_exposure);
	}
	if (VmbErrorSuccess == res)
	{
		res = SP_ACCESS(pFeature_exposure)->SetValue(m_exposure);
	}	
	FeaturePtr offset_x;
	res = SP_ACCESS(m_pCamera)->GetFeatureByName("OffsetX", offset_x);
	if (VmbErrorSuccess == res)
	{
		res = SP_ACCESS(offset_x)->SetValue(m_offset_x);
	}
	FeaturePtr offset_y;
	res = SP_ACCESS(m_pCamera)->GetFeatureByName("OffsetY", offset_y);
	if (VmbErrorSuccess == res)
	{
		res = SP_ACCESS(offset_y)->SetValue(m_offset_y);
	}

图片大小可在ApiController.h里面设置

    VmbInt64_t    m_nWidth = 360;
    VmbInt64_t    m_nHeight = 180;

python用于inceptionv 3分类，c++用于产生图片。为了节约开发时间，c++将图片写入固定目录，然后python读取固定目录检测，为了两边线程的安全，用了比较蠢的办法：读取txt！两边同时判断。隐掉的部分可用于格式化批量保存图片。

void AsynchronousOpenCVRecorder::OnFrameReady(int status)
{
	if (true == m_bIsStreaming)
	{
			// Pick up frame
			FramePtr pFrame = m_ApiController.GetFrame();
			if (SP_ISNULL(pFrame))
			{
				Log("frame pointer is NULL, late frame ready message");
				return;
			}
			// See if it is not corrupt
			if (VmbFrameStatusComplete == status)
			{
				if (!m_pVideoRecorder.isNull())
				{
					m_pVideoRecorder->enqueueFrame(*pFrame);
				}
				VmbUchar_t *pBuffer;
				VmbErrorType err = SP_ACCESS(pFrame)->GetImage(pBuffer);
				if (VmbErrorSuccess == err)
				{
					VmbUint32_t nSize;
					err = SP_ACCESS(pFrame)->GetImageSize(nSize);
					if (VmbErrorSuccess == err)
					{
						VmbPixelFormatType ePixelFormat = m_ApiController.GetPixelFormat();
						if (!m_Image.isNull())
						{
							QFile f1("test.txt");
							f1.open(QIODevice::Text | QIODevice::ReadOnly);
							if (f1.readLine() == QByteArray("0"))
							{
								f1.close();
								CopyToImage(pBuffer, ePixelFormat, m_Image);
								cv::Mat mat;
								mat = cv::Mat(m_Image.height(), m_Image.width(), CV_8UC3, (void*)m_Image.constBits(), m_Image.bytesPerLine());
								/*char image[128];
								n++;
								sprintf(image, "F:/new/new_wet2_%d%s",n, ".jpg");
								bool mark = cv::imwrite(image ,mat);*/
								bool mark=cv::imwrite("C://Users//惠普//Desktop//磁瓦检测项目1//class_transfer_learning//test.jpg", mat);
								if (mark)
								{
									const QSize s = ui.m_LabelStream->size();
									ui.m_LabelStream->setPixmap(QPixmap::fromImage(m_Image).scaled(s, Qt::KeepAspectRatio));
									QFile f2("test2.txt");
									f2.open(QIODevice::Text | QIODevice::ReadOnly);
									if (f2.readLine() == QByteArray("0"))
									{
										ui.label_4->setText(QString::fromLocal8Bit("不正常"));
									}
									else
									{
										ui.label_4->setText(QString::fromLocal8Bit("正常"));
									}

									//Sleep(100);
									QFile f("test.txt");
									QString b = "1";
									f.open(QIODevice::Text | QIODevice::ReadWrite);
									f.write(b.toLatin1(), b.length());
									f.close();
								}
							}
						}
					}
				}
			}
			else
			{
				// If we receive an incomplete image we do nothing but logging
				Log("Failure in receiving image", VmbErrorOther);
			}
			// And queue it to continue streaming
			m_ApiController.QueueFrame(pFrame);
	}
}

开启视频录制线程：

    m_pVideoRecorder = OpenCVRecorderPtr(new OpenCVRecorder("AsynchronousOpenCVRecorder.avi", FPS, Width, Height));
    m_pVideoRecorder->start();

线程核心代码：

     while( ! m_StopThread )
        {
            FrameStorePtr tmp;
            {
                // two class events unlock the queue
                // first if a frame arrives enqueueFrame wakes the condition
                // second if the thread is stopped we are woken up
                // the while loop is necessary because a condition can be woken up by the system
                QMutexLocker local_lock( &m_ClassLock );
                while(! m_StopThread && m_FrameQueue.empty() )
                {
                    m_FramesAvailable.wait( local_lock.mutex() );
                }
                if( ! m_StopThread)
                {
                    tmp = m_FrameQueue.front();
                    m_FrameQueue.pop_front();
                }
            }// scope for the lock, from now one we don't need the class lock
            if( ! m_StopThread)
            {
                convertImage( *tmp );
                m_VideoWriter << m_ConvertImage;
            }
        }

VS+QT exe图标问题：

在Qt Designer里面

这样虽然UI有图标了，但是生成exe却没有。
新建一个.rc文件，写入

IDI_ICON1 ICON DISCARDABLE "AVT.ico"

并把.rc和.ico添加到工程里面即可

软件自启动：

找到VS的输出路径，添加相应的dll文件，双击exe文件确认是否可以运行，再发送到桌面快捷方式，这个时候进入 C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp 路径(win10)，把快捷方式拖到里面就可以了。