更新固件SDK后,PTGRey相机(Dragonfly express)无法开始捕获



几个月来,我一直在使用Point Grey Research公司的Dragonfly Express相机。我已经编写了代码来使用相机和抓取图像。最近我已经将固件和SDK从2更新到2.2,从那时起我就无法使用我的代码抓取图像。新的FlyCapture2控制面板(2.2)工作,并能够使用相同的相机捕捉视频。具体来说,当我在Camera对象上调用StartCapture时,我得到了一个错误。我正在粘贴我的程序的输出,然后我会添加相关的相机代码:

* CAMERA INFORMATION *序列号- 7340769相机型号-蜻蜓快车DX-BW相机供应商- Point Grey Research传感器-柯达KAI-0340DM (1/3" 640x480 CCD)分辨率- 648x484固件版本为1.1.1.21固件构建时间- 2006年6月21日星期三23:01:00

错误跟踪:来源:. iidcamera internal .cpp(429) Built: Sep 23 2010 12:41:46 -启动错误Ng等时流。+-> From: .Iso.cpp(1515) Built: Sep 23 2010 12:41:43 -同步启动失败. 错误:0 x15。

    bool
Camera::Start()
{
    FlyCapture2::BusManager busMgr;
    unsigned int numCameras;
    error = busMgr.GetNumOfCameras(&numCameras);
    if (error != FlyCapture2::PGRERROR_OK)
    {
        error.PrintErrorTrace();
        return false;
    }
    FlyCapture2::PGRGuid guid;
    {
        error = busMgr.GetCameraFromIndex(0, &guid);
        if (error != FlyCapture2::PGRERROR_OK)
        {
            error.PrintErrorTrace();
            return false;
        }
    }

    // Connect to a camera
    error = cam.Connect(&guid);
    if (error != FlyCapture2::PGRERROR_OK)
    {
        error.PrintErrorTrace();
        return false;
    }
    // Get the camera information
    FlyCapture2::CameraInfo camInfo;
    error = cam.GetCameraInfo(&camInfo);
    if (error != FlyCapture2::PGRERROR_OK)
    {
        error.PrintErrorTrace();
        return false;
    }
    FlyCapture2::FC2Config Config;
    FlyCapture2::TriggerDelay Trigger;
    cam.GetTriggerDelay (&Trigger);
    Trigger.absValue = 0.000075;
    Trigger.onOff = true;
    error = cam.SetTriggerDelay (&Trigger);
    if (error != FlyCapture2::PGRERROR_OK)
    {
        error.PrintErrorTrace();
        return false;
    }
    FlyCapture2::StrobeControl s;
    {           
        FlyCapture2::TriggerMode Mode;
        memset (&Mode, 0, sizeof(Mode));
        Mode.source = 0;
        error = cam.GetTriggerMode (&Mode);
        if (error != FlyCapture2::PGRERROR_OK)
        {
            error.PrintErrorTrace();
            return false;
        }
        Mode.mode = 14;
        Mode.onOff = true;
        Mode.polarity = 1;
        error = cam.SetTriggerMode (&Mode);
        if (error != FlyCapture2::PGRERROR_OK)
        {
            error.PrintErrorTrace();
            return false;
        }
    }
    {
        FlyCapture2::Property p;
        memset (&p, 0, sizeof(p));
        p.type = FlyCapture2::AUTO_EXPOSURE;
        p.onOff = false;
        error = cam.SetProperty (&p);
        if (error != FlyCapture2::PGRERROR_OK)
        {
            error.PrintErrorTrace();
            return false;
        }
        memset (&p, 0, sizeof(p));
        p.type = FlyCapture2::BRIGHTNESS;
        p.absControl = true;
        p.absValue = Brightness;
        error = cam.SetProperty (&p);
        if (error != FlyCapture2::PGRERROR_OK)
        {
            error.PrintErrorTrace();
            return false;
        }
        memset (&p, 0, sizeof(p));
        p.type = FlyCapture2::SHUTTER;
        p.absControl = true;
        p.absValue = Shutter;
        p.onOff = false;
        error = cam.SetProperty (&p);
        if (error != FlyCapture2::PGRERROR_OK)
        {
            error.PrintErrorTrace();
            return false;
        }
        memset (&p, 0, sizeof(p));
        p.type = FlyCapture2::GAIN;
        p.absControl = true;
        p.absValue = Gain;
        p.onOff = false;
        error = cam.SetProperty (&p);
        if (error != FlyCapture2::PGRERROR_OK)
        {
            error.PrintErrorTrace();
            return false;
        }
        bool IsStandard = false;
        {
            error = cam.SetVideoModeAndFrameRate (FlyCapture2::VideoMode::VIDEOMODE_640x480Y8, FlyCapture2::FRAMERATE_60 );
            if (error != FlyCapture2::PGRERROR_OK)
            {
                error.PrintErrorTrace();
                return false;
            }
            FlyCapture2::Format7ImageSettings f7;
            memset (&f7, 0, sizeof(f7));
            f7.mode = FlyCapture2::MODE_0;
            float Percent = 1;
            f7.mode = FlyCapture2::MODE_0;
            f7.height = h;
            f7.width = w;
            f7.offsetX = 4+((640-w)/2);
            f7.offsetY = 2+((480-h)/2);
            f7.pixelFormat = FlyCapture2::PIXEL_FORMAT_MONO8;
            Percent = 100;
            bool Valid = false;
            FlyCapture2::Format7PacketInfo Info;
            error = cam.ValidateFormat7Settings  (&f7, &Valid, &Info);
            if (error != FlyCapture2::PGRERROR_OK)
            {
                error.PrintErrorTrace();
                return false;
            }           
            error = cam.SetFormat7Configuration (&f7, Info.recommendedBytesPerPacket);
            if (error != FlyCapture2::PGRERROR_OK)
            {
                error.PrintErrorTrace();
                return false;
            }
        }
    }
    cam.GetConfiguration  ( &Config);
    Config.grabTimeout = 4000;
    Config.numBuffers = 120;
    Config.grabMode = FlyCapture2::BUFFER_FRAMES;
    error = cam.SetConfiguration  ( &Config);
    if (error != FlyCapture2::PGRERROR_OK)
    {
        error.PrintErrorTrace();
        return false;
    }
    PrintCameraInfo(&camInfo);        
    // Start capturing images
    error = cam.StartCapture();
    if (error != FlyCapture2::PGRERROR_OK)
    {
        error.PrintErrorTrace();
        return false;
    }
}

刚刚看到AndyUK的第4点,不确定这是否有助于原始海报。我需要一些关于返回的错误的额外信息。要获得更多用于设置格式7的通用代码,您需要从相机中查询可用的步长。每个模型(可能还有固件版本)都将支持偏移量的步长和图像大小的步长。指定的偏移量和大小必须是这些步长值的倍数。如果你用Camera.GetFormat7Info()提取信息,相关的字段是offsetHStepSize, offsetVStepSize, imageHStepSize和imageVStepSize。我不确定,但听起来AndyUK的Flea2模型的值将是8,2,8,2。偏移量和图像大小的步骤不一定相同,尽管这很常见。

virtual Error GetFormat7Info( 
            Format7Info*   pInfo,
            bool*          pSupported );
/** Format 7 information for a single mode. */
struct Format7Info
{
        /** Format 7 mode. */
        Mode mode;
        /** Maximum image width. */
        unsigned int maxWidth;
        /** Maximum image height. */
        unsigned int maxHeight;
        /** Horizontal step size for the offset. */
        unsigned int offsetHStepSize;
        /** Vertical step size for the offset. */
        unsigned int offsetVStepSize;
        /** Horizontal step size for the image. */
        unsigned int imageHStepSize;
        /** Vertical step size for the image. */
        unsigned int imageVStepSize;
        /** Supported pixel formats in a bit field. */
        unsigned int pixelFormatBitField;
        /** Current packet size in bytes. */
        unsigned int packetSize;
        /** Minimum packet size in bytes for current mode. */
        unsigned int minPacketSize;
        /** Maximum packet size in bytes for current mode. */
        unsigned int maxPacketSize;
        /** Current packet size as a percentage of maximum packet size. */
            float percentage;
        /** Reserved for future use. */
        unsigned int reserved[16];
        Format7Info()
        {
            mode = MODE_0;
            maxWidth = 0;
            maxHeight = 0;
            offsetHStepSize = 0;
            offsetVStepSize = 0;
            imageHStepSize = 0;
            imageVStepSize = 0;
            pixelFormatBitField = 0;
            packetSize = 0;
            minPacketSize = 0;
            maxPacketSize = 0;
            percentage = 0.0f;
            memset( reserved, 0, sizeof(reserved) );
        }
    };

有一两件事需要澄清:

  1. 它是否不断地这样做,即使你断电并重新启动,拔掉火线等?

  2. 您是否尝试运行由Point Gray提供的安装附带的FlyCapture2 SDK示例?无论固件/SDK更新如何,它们仍然可以正常运行吗?你似乎是利用外部硬件触发器,所以你有没有尝试过例如AsynchTriggerEx的例子,这仍然运行良好,当你馈送它的软件触发器或外部硬件触发器?或者也许尝试FlyCap2MFC.exe的例子只是为了检查它仍然捕获视频,好吗?

  3. 当您逐行执行代码时会发生什么?当它进入Start()时,您知道问题是从哪里开始的吗?在什么时候,库返回的"错误"值是不受欢迎的,即不是PGRERROR_OK值每个相机函数应该返回?

  4. 当我在Format7(部分图像)模式下使用Flea2相机时,对于MONO8模式下的图像,我注意到在设置format7imagessettings结构体的宽度时,除非此值是8的倍数对于我的特定应用程序,然后ValidateFormat7Settings将返回FlyCapture2::Error值PGRERROR_IIDC_FAILED。同样,高度值也需要是2(偶数)的倍,以确保满意的Format7设置。此错误将导致cam.StartCapture()函数挂起。

我不知道最后一点是否已经记录在point Grey的文献中,但这只是一种观察。第四点我可能弄错了。我仍然是FlyCapture的新手,还没有完全理解它。我希望有机会澄清这件事。

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