public Bitmap ToBitmap(Bitmap.Config config)
{
System.Drawing.Size size = Size;
if (config == Bitmap.Config.Argb8888)
{
Bitmap result = Bitmap.CreateBitmap(size.Width, size.Height, Bitmap.Config.Argb8888);
using (BitmapArgb8888Image bi = new BitmapArgb8888Image(result))
using (Image<Rgba, Byte> tmp = ToImage<Rgba, Byte>())
{
tmp.Copy(bi, null);
}
return result;
}
else if (config == Bitmap.Config.Rgb565)
{
Bitmap result = Bitmap.CreateBitmap(size.Width, size.Height, Bitmap.Config.Rgb565);
using (BitmapRgb565Image bi = new BitmapRgb565Image(result))
using (Image<Bgr, Byte> tmp = ToImage<Bgr, Byte>())
bi.ConvertFrom(tmp);
return result;
}
else
{
throw new NotImplementedException("Only Bitmap config of Argb888 or Rgb565 is supported.");
}
}
protected override void OnDraw(Android.Graphics.Canvas canvas)
{
base.OnDraw(canvas);
lock (this)
{
Image<Bgr, byte> image = _bgrBuffers.GetBuffer(0);
if (image != null && !_imageSize.IsEmpty && canvas != null)
{
Stopwatch w = Stopwatch.StartNew();
if ((_bmpImage != null) && (!_imageSize.Equals(_bmpImage.Size)))
{
_bmpImage.Dispose();
_bmpImage = null;
_bmp.Dispose();
_bmp = null;
}
if (_bmpImage == null)
{
_bmp = Android.Graphics.Bitmap.CreateBitmap(_imageSize.Width, _imageSize.Height, Android.Graphics.Bitmap.Config.Rgb565);
_bmpImage = new BitmapRgb565Image(_bmp);
}
_bmpImage.ConvertFrom(image);
canvas.DrawBitmap(_bmp, 0, 0, _paint);
w.Stop();
_watch.Stop();
#if DEBUG
canvas.DrawText(String.Format("{0:F2} FPS; {1}x{2}; Render Time: {3} ms",
1.0 / _watch.ElapsedMilliseconds * 1000,
_imageSize.Width,
_imageSize.Height,
w.ElapsedMilliseconds), 20, 20, _paint);
#endif
_watch.Reset();
_watch.Start();
}
}
}
/// <summary>
/// Convert the Mat to Bitmap
/// </summary>
/// <param name="config">The bitmap config type. If null, Argb8888 will be used</param>
/// <returns>The Bitmap</returns>
public Bitmap ToBitmap(Bitmap.Config config = null)
{
System.Drawing.Size size = Size;
if (config == null || config == Bitmap.Config.Argb8888)
{
Bitmap result = Bitmap.CreateBitmap(size.Width, size.Height, Bitmap.Config.Argb8888);
int channels = NumberOfChannels;
using (BitmapArgb8888Image bi = new BitmapArgb8888Image(result))
{
if (channels == 1)
{
CvInvoke.CvtColor(this, bi.Mat, ColorConversion.Gray2Rgba);
} else if (channels == 3)
{
CvInvoke.CvtColor(this, bi, ColorConversion.Bgr2Rgba);
} else if (channels == 4)
{
CvInvoke.CvtColor(this, bi, ColorConversion.Bgra2Rgba);
}
else
{
using (Image<Rgba, Byte> tmp = ToImage<Rgba, Byte>())
{
tmp.Copy(bi, null);
}
}
}
return result;
}
else if (config == Bitmap.Config.Rgb565)
{
Bitmap result = Bitmap.CreateBitmap(size.Width, size.Height, Bitmap.Config.Rgb565);
using (BitmapRgb565Image bi = new BitmapRgb565Image(result))
using (Image<Bgr, Byte> tmp = ToImage<Bgr, Byte>())
bi.ConvertFrom(tmp);
return result;
}
else
{
throw new NotImplementedException("Only Bitmap config of Argb888 or Rgb565 is supported.");
}
}
public void ImagePreview(Object sender, ProcessedCameraPreview.ImagePreviewEventArgs e)
{
Image <Gray, Byte> yuv420sp = e.Yuv420sp;
Image <Bgr, Byte> image = e.Result;
#region get the thumbnail size buffer
Size s = image.Size;
int maxDimension = 96;
int width = maxDimension;
int height = maxDimension;
if (s.Width > s.Height)
{
height = maxDimension * s.Height / s.Width;
}
else
{
width = maxDimension * s.Width / s.Height;
}
s.Width = width;
s.Height = height;
Mat thumbnail = _bgrBuffers.GetBuffer(s, 1);
#endregion
if (_imageFilter == null)
{
CvInvoke.CvtColor(yuv420sp, image, Emgu.CV.CvEnum.ColorConversion.Yuv420Sp2Bgr);
CvInvoke.Resize(image, thumbnail, s, 0, 0, Emgu.CV.CvEnum.Inter.Nearest);
}
else
{
Mat bgr = _bgrBuffers.GetBuffer(image.Size, 0);
CvInvoke.CvtColor(yuv420sp, bgr, Emgu.CV.CvEnum.ColorConversion.Yuv420Sp2Bgr);
lock (typeof(ImageFilter))
_imageFilter.ProcessData(bgr, image.Mat);
CvInvoke.Resize(bgr, thumbnail, s, 0, 0, Emgu.CV.CvEnum.Inter.Nearest);
}
{
Android.Graphics.Bitmap thumbnailBmp = _previewBitmapBuffers.GetBuffer(s, 0);
using (BitmapRgb565Image img565 = new BitmapRgb565Image(thumbnailBmp))
img565.ConvertFrom(thumbnail);
_previewButtons[0].SetImageBitmap(thumbnailBmp);
int startBufferIndex = 2;
for (int i = 1; i < _previewFilters.Length; i++)
{
Mat buffer = _bgrBuffers.GetBuffer(s, startBufferIndex + i - 1);
_previewFilters[i].ProcessData(thumbnail, buffer);
Android.Graphics.Bitmap bmp = _previewBitmapBuffers.GetBuffer(s, i);
using (BitmapRgb565Image tmp = new BitmapRgb565Image(bmp))
{
tmp.ConvertFrom(buffer);
}
_previewButtons[i].SetImageBitmap(bmp);
}
} /*
* catch (Exception excpt)
* {
* while (excpt.InnerException != null)
* excpt = excpt.InnerException;
* Android.Util.Log.Debug("Emgu.CV", String.Format("Failed to generate preview: {0}", excpt.Message));
* }*/
}
public void ImagePreview(Object sender, ProcessedCameraPreview.ImagePreviewEventArgs e)
{
Image<Gray, Byte> yuv420sp = e.Yuv420sp;
Image<Bgr, Byte> image = e.Result;
#region get the thumbnail size buffer
Size s = image.Size;
int maxDimension = 96;
int width = maxDimension;
int height = maxDimension;
if (s.Width > s.Height)
{
height = maxDimension * s.Height / s.Width;
}
else
{
width = maxDimension * s.Width / s.Height;
}
s.Width = width;
s.Height = height;
Mat thumbnail = _bgrBuffers.GetBuffer(s, 1);
#endregion
if (_imageFilter == null)
{
CvInvoke.CvtColor(yuv420sp, image, Emgu.CV.CvEnum.ColorConversion.Yuv420Sp2Bgr);
CvInvoke.Resize(image, thumbnail, s, 0, 0, Emgu.CV.CvEnum.Inter.Nearest);
}
else
{
Mat bgr = _bgrBuffers.GetBuffer(image.Size, 0);
CvInvoke.CvtColor(yuv420sp, bgr, Emgu.CV.CvEnum.ColorConversion.Yuv420Sp2Bgr);
lock (typeof(ImageFilter))
_imageFilter.ProcessData(bgr, image.Mat);
CvInvoke.Resize(bgr, thumbnail, s, 0, 0, Emgu.CV.CvEnum.Inter.Nearest);
}
{
Android.Graphics.Bitmap thumbnailBmp = _previewBitmapBuffers.GetBuffer(s, 0);
using (BitmapRgb565Image img565 = new BitmapRgb565Image(thumbnailBmp))
img565.ConvertFrom(thumbnail);
_previewButtons[0].SetImageBitmap(thumbnailBmp);
int startBufferIndex = 2;
for (int i = 1; i < _previewFilters.Length; i++)
{
Mat buffer = _bgrBuffers.GetBuffer(s, startBufferIndex + i - 1);
_previewFilters[i].ProcessData(thumbnail, buffer);
Android.Graphics.Bitmap bmp = _previewBitmapBuffers.GetBuffer(s, i);
using (BitmapRgb565Image tmp = new BitmapRgb565Image(bmp))
{
tmp.ConvertFrom(buffer);
}
_previewButtons[i].SetImageBitmap(bmp);
}
} /*
catch (Exception excpt)
{
while (excpt.InnerException != null)
excpt = excpt.InnerException;
Android.Util.Log.Debug("Emgu.CV", String.Format("Failed to generate preview: {0}", excpt.Message));
}*/
}
