/// <summary>
/// 非同步取得影像的OnCallback函數無法順利執行(目前不使用)
/// </summary>
/// <returns></returns>
public Bitmap CaptureToImageAsyn()
{
try
{
stImage = null;
bmp = null;
CStPixelFormatConverter m_Converter = new CStPixelFormatConverter();
dataStream.RegisterCallbackMethod(OnCallback);
dataStream.StartAcquisition(1);
device.AcquisitionStart();
if (SpinWait.SpinUntil(() => stImage != null, 10000))
{
device.AcquisitionStop();
dataStream.StopAcquisition();
bool isColor = CStApiDotNet.GetIStPixelFormatInfo(stImage.ImagePixelFormat).IsColor;
if (isColor)
{
// Convert the image data to BGR8 format.
m_Converter.DestinationPixelFormat = eStPixelFormatNamingConvention.BGR8;
}
else
{
// Convert the image data to Mono8 format.
m_Converter.DestinationPixelFormat = eStPixelFormatNamingConvention.Mono8;
}
m_Converter.Convert(stImage, imageBuffer);
byte[] imageData = imageBuffer.GetIStImage().GetByteArray();
MemoryStream ms = new MemoryStream(imageData);
bmp = (Bitmap)Bitmap.FromStream(ms);
}
else
{
throw new Exception("Camera(" + device.GetIStDeviceInfo().DisplayName + ") can not capture image!!");
}
}
catch (Exception ex)
{
device.AcquisitionStop();
dataStream.StopAcquisition();
throw ex;
}
return(bmp);
}
//public void CaptureSaveSyn(string SavePath, string FileType)
//{
// try
// {
// stImage = null;
// // 顯示裝置名稱
// Console.WriteLine("Device=" + device.GetIStDeviceInfo().DisplayName);
// //dataStream.RegisterCallbackMethod(OnCallback);
// // 主機端獲取影像
// dataStream.StartAcquisition(1);
// // 開始由相機取得影像
// device.AcquisitionStart();
// // 逾時超過5000ms後，回收儲存影像資料的暫存區
// // 使用 'using' 語法可在不需使用時，自動管理暫存區重新排隊操作
// using (CStStreamBuffer streamBuffer = dataStream.RetrieveBuffer(5000))
// {
// // 檢查取得的資料是否包含影像資料
// if (streamBuffer.GetIStStreamBufferInfo().IsImagePresent)
// {
// string sFT = FileType.ToLower();
// stImage = streamBuffer.GetIStImage();
// SavePath += (@"\" + device.GetIStDeviceInfo().DisplayName + @"\" + DateTime.Now.ToString("yyyyMMdd_HHmmss"));
// if (sFT == "bitmap" || sFT == "bmp" || sFT == ".bmp")
// {
// SavePath += ".jpg";
// }
// else if (sFT == "tiff" || sFT == "tif" || sFT == ".tif")
// {
// SavePath += ".tif";
// }
// else if (sFT == "png" || sFT == ".png")
// {
// SavePath += ".png";
// }
// else if (sFT == "jpeg" || sFT == "jpg" || sFT == ".jpg")
// {
// SavePath += ".jpg";
// stillImageFiler.Quality = 75;
// }
// else if (sFT == "csv" || sFT == ".csv")
// {
// SavePath += ".csv";
// }
// else //要轉換的檔案格式(副檔名)錯誤
// throw new Exception("File Type was wrong.");
// this.SaveImage(stImage, SavePath, sFT);
// device.AcquisitionStop();
// dataStream.StopAcquisition();
// //// 顯示接收影像的詳細資訊
// //Byte[] imageData = stImage.GetByteArray();
// //Console.Write("BlockId=" + streamBuffer.GetIStStreamBufferInfo().FrameID);
// //Console.Write(" Size:" + stImage.ImageWidth + " x " + stImage.ImageHeight);
// //Console.Write(" First byte =" + imageData[0] + Environment.NewLine);
// //var width = (int)stImage.ImageWidth;
// //var height = (int)stImage.ImageHeight;
// //myimg = new Bitmap(width, height);
// ////TODO: https://stackoverflow.com/questions/3474434/set-individual-pixels-in-net-format16bppgrayscale-image
// //for (var idx = 0; idx < imageData.Length; idx++)
// //{
// // var val = imageData[idx];
// // var color = Color.FromArgb(val, val, val);
// // myimg.SetPixel(idx % width, idx / width, color);
// //}
// }
// else
// {
// // 如果取得的資料不含影像資料
// Console.WriteLine("Image data does not exist.");
// }
// }
// }
// catch (Exception ex)
// {
// device.AcquisitionStop();
// dataStream.StopAcquisition();
// throw ex;
// }
//}
public Bitmap CaptureToImageSyn()
{
try
{
stImage = null;
bmp = null;
CStPixelFormatConverter m_Converter = new CStPixelFormatConverter();
// 顯示裝置名稱
Console.WriteLine("Device=" + device.GetIStDeviceInfo().DisplayName);
//dataStream.RegisterCallbackMethod(OnCallback);
// 主機端獲取影像
dataStream.StartAcquisition(1);
// 開始由相機取得影像
device.AcquisitionStart();
// 逾時超過5000ms後，回收儲存影像資料的暫存區
// 使用 'using' 語法可在不需使用時，自動管理暫存區重新排隊操作
using (CStStreamBuffer streamBuffer = dataStream.RetrieveBuffer(5000))
{
// 檢查取得的資料是否包含影像資料
if (streamBuffer.GetIStStreamBufferInfo().IsImagePresent)
{
stImage = streamBuffer.GetIStImage();
#region 如果取得的影像是彩色，需經過轉換才能得到每Pixel以RGB排列的Byte[]
bool isColor = CStApiDotNet.GetIStPixelFormatInfo(stImage.ImagePixelFormat).IsColor;
if (isColor)
{
// Convert the image data to BGR8 format.
m_Converter.DestinationPixelFormat = eStPixelFormatNamingConvention.BGR8;
}
else
{
// Convert the image data to Mono8 format.
m_Converter.DestinationPixelFormat = eStPixelFormatNamingConvention.Mono8;
}
m_Converter.Convert(stImage, imageBuffer);
#endregion
//Byte[] imageData = stImage.GetByteArray();
byte[] imageData = imageBuffer.GetIStImage().GetByteArray();
var width = (int)stImage.ImageWidth;
var height = (int)stImage.ImageHeight;
//如果影像是彩色的
if (isColor)
{
bmp = new Bitmap(width, height, PixelFormat.Format24bppRgb);
}
else//灰階影像
{
bmp = new Bitmap(width, height, PixelFormat.Format8bppIndexed);
//// 下面的代碼是為了修改生成位圖的索引表，從偽彩修改為灰度
ColorPalette palette = bmp.Palette;
for (int i = 0; i < 256; i++)
{
palette.Entries[i] = Color.FromArgb(i, i, i);
}
bmp.Palette = palette;
}
// Lock the bits of the bitmap.
BitmapData bmpData = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, bmp.PixelFormat);
// Place the pointer to the buffer of the bitmap.
IntPtr ptr = bmpData.Scan0;
// fill in rgbValues
Marshal.Copy(imageData, 0, ptr, imageData.Length);
bmp.UnlockBits(bmpData);
//bmp.Save(@"D:/" + DateTime.Now.ToString("yyyyMMdd_HHmmss") + ".jpg", ImageFormat.Jpeg);
}
else
{
// 如果取得的資料不含影像資料
Console.WriteLine("Image data does not exist.");
}
}
return(bmp);
}
catch (Exception ex)
{
device.AcquisitionStop();
dataStream.StopAcquisition();
throw ex;
}
finally
{
device.AcquisitionStop();
dataStream.StopAcquisition();
}
}
