对于我的实习,我必须使用prosillica相机创建照片,我一直在寻找能够使用相机的不同api。现在我发现了一个有效的,我写了一个前任实习生写的代码(“猜测”他说)。我得到的图像,但他们都真的放大了。在官方的Firegrab程序中,图片看起来很好,根本没有放大。您可以查看图片here。我写的连接相机的代码如下:
Ctrl = FireWrap_CtrlCenter.GetInstance();
Ctrl.OnFrameReady += OnFrameReady;
Result = Ctrl.FGInitModule();
if (Result == enFireWrapResult.E_NOERROR)
{
Result = InfoContainer.FGGetNodeList();
var NodeCnt = InfoContainer.Size();
InfoContainer.GetAt(NodeInfo, 0);
Result = Cam.Connect(NodeInfo.Guid);
cCamera.Items.Add(Cam.DeviceAll);
if (Result == enFireWrapResult.E_NOERROR)
{
Cam.m_Guid = NodeInfo.Guid;
}
if (Result == enFireWrapResult.E_NOERROR)
{
Result = Cam.SetParameter(enFGParameter.E_IMAGEFORMAT,
(((uint)enFGResolution.E_RES_SCALABLE << 16) |
((uint)enColorMode.E_CCOLORMODE_Y8 << 8) |
0));
}
if (Result == enFireWrapResult.E_NOERROR)
Result = Cam.OpenCapture();
// Print device settings
Result = Cam.GetParameter(enFGParameter.E_XSIZE, ref XSize);
Result = Cam.GetParameter(enFGParameter.E_YSIZE, ref YSize);
width = XSize;
height = YSize;
// Start camera
if (Result == enFireWrapResult.E_NOERROR)
{
Result = Cam.StartDevice();
}
}
当我连接相机时,我也告诉它立即开始录制。我在相机打开时获得的帧在OnFrameReady中处理,我使用以下代码:
Debug.WriteLine("OnFrameReady is called");
FGEventArgs args = (FGEventArgs)__p2;
FGFrame Frame;
Guid.High = args.High;
Guid.Low = args.Low;
if (Guid.Low == Cam.m_Guid.Low)
{
Result = Cam.GetFrame(Frame, 0);
// Process frame, skip FrameStart notification
if (Result == enFireWrapResult.E_NOERROR & Frame.Length > 0)
{
byte[] data = new byte[Frame.Length];
// Access to frame data
if (Frame.CloneData(data))
{
//DisplayImage(data.Clone());
SaveImageFromByteArray(data);
// Here you can start your image processsing logic on data
string debug = String.Format("[{6}] Frame #{0} length:{1}byte [ {2} {3} {4} {5} ... ]",
Frame.Id, Frame.Length, data[0], data[1], data[2], data[3], Cam.m_Guid.Low);
Debug.WriteLine(debug);
}
// Return frame to module as fast as posible after this the Frame is not valid
Result = Cam.PutFrame(Frame);
}
}
所以在这个函数中我得到了帧并将其放在byte []中,然后我调用函数SaveImageFromByteArray();我把byte []放在一个列表中。所以我可以稍后访问我的所有图片以保存它们。 SaveImageFromByteArray的代码如下:
public void SaveImageFromByteArray(byte[] byteArray)
{
try
{
//bytearray size determined
byte[] data = new byte[width * height * 4];
int o = 0;
//bytearray size filled
for (int io = 0; io < width * height; io++)
{
byte value = byteArray[io];
data[o++] = value;
data[o++] = value;
data[o++] = value;
data[o++] = 0;
}
bytearrayList.Add(data);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
我完成了对所有帧的重新编码后,单击“保存”,停止相机,然后调用以下函数将其保存到位图文件中:
public void SaveData()
{
try
{
foreach (byte[] data1 in bytearrayList)
{
byte[] data = Save(data1);
lock (this)
{
unsafe
{
fixed (byte* ptr = data)
{
try
{
using (image = new Bitmap((int) width, (int) height, (int) width * 4,
System.Drawing.Imaging.PixelFormat.Format32bppPArgb, new IntPtr(ptr)))
{
image.Save(path + nextpicture + ".bmp", ImageFormat.Bmp);
Debug.WriteLine("Image saved at " + path + nextpicture + ".bmp");
nextpicture++;
}
}
catch (Exception ex)
{
Debug.Write(ex.ToString());
}
}
}
}
}
}
catch (Exception ex)
{
Debug.Write(ex.ToString());
}
}
上述函数中调用的save函数编写如下:
private byte[] Save(byte[] data1)
{
//bytearray size determined
byte[] data = new byte[width * height * 4];
int o = 0;
//bytearray size filled
for (int io = 0; io < width * height; io++)
{
byte value = data1[io];
data[o++] = value;
data[o++] = value;
data[o++] = value;
data[o++] = 0;
}
return data;
}
我认为当我们连接到相机并执行这行代码时会发生缩放问题:
if (Result == enFireWrapResult.E_NOERROR)
{
Result = Cam.SetParameter(enFGParameter.E_IMAGEFORMAT,
(((uint)enFGResolution.E_RES_SCALABLE << 16) |
((uint)enColorMode.E_CCOLORMODE_Y8 << 8)|
0));
}
但问题是没有关于Firewrap.net或其api的文档。即使我们尝试将16编辑为15,相机也不会启动
答案 0 :(得分:0)
byte[] data = new byte[width * height * 4];
int o = 0;
//bytearray size filled
for (int io = 0; io < width * height; io++)
{
byte value = byteArray[io];
data[o++] = value;
data[o++] = value;
data[o++] = value;
data[o++] = 0;
}