/// <summary>
/// Convert a Bitmap to a Mat
/// </summary>
/// <param name="mat">The mat to copy Bitmap into</param>
/// <param name="bitmap">The bitmap to copy into mat</param>
public static void ToMat(this Android.Graphics.Bitmap bitmap, Mat mat)
{
Android.Graphics.Bitmap.Config config = bitmap.GetConfig();
if (config.Equals(Android.Graphics.Bitmap.Config.Argb8888))
{
using (BitmapArgb8888Image bi = new BitmapArgb8888Image(bitmap))
{
CvInvoke.CvtColor(bi, mat, ColorConversion.Rgba2Bgra);
}
}
else if (config.Equals(Android.Graphics.Bitmap.Config.Rgb565))
{
Size size = new Size(bitmap.Width, bitmap.Height);
int[] values = new int[size.Width * size.Height];
bitmap.GetPixels(values, 0, size.Width, 0, 0, size.Width, size.Height);
GCHandle handle = GCHandle.Alloc(values, GCHandleType.Pinned);
using (Mat bgra = new Mat(size, DepthType.Cv8U, 4, handle.AddrOfPinnedObject(), size.Width * 4))
{
bgra.CopyTo(mat);
}
handle.Free();
}
else
{
throw new NotImplementedException(String.Format("Coping from Bitmap of {0} is not implemented", config));
}
}
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))
{
bi.ConvertFrom(this);
//CvInvoke.cvSet(bi, new MCvScalar(0, 0, 255, 255), IntPtr.Zero);
}
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))
bi.ConvertFrom(this);
return(result);
}
else
{
throw new NotImplementedException("Only Bitmap config of Argb888 or Rgb565 is supported.");
}
}
/// <summary>
/// Convert Image object to Bitmap
/// </summary>
/// <param name="config">The Bitmap Config</param>
/// <returns>The Bitmap</returns>
public static Android.Graphics.Bitmap ToBitmap <TColor, TDepth>(this Image <TColor, TDepth> image, Android.Graphics.Bitmap.Config config)
where TColor : struct, IColor
where TDepth : new()
{
System.Drawing.Size size = image.Size;
if (config == Android.Graphics.Bitmap.Config.Argb8888)
{
Android.Graphics.Bitmap result = Android.Graphics.Bitmap.CreateBitmap(size.Width, size.Height, Android.Graphics.Bitmap.Config.Argb8888);
using (BitmapArgb8888Image bi = new BitmapArgb8888Image(result))
{
bi.ConvertFrom(image);
//CvInvoke.cvSet(bi, new MCvScalar(0, 0, 255, 255), IntPtr.Zero);
}
return(result);
}
else if (config == Android.Graphics.Bitmap.Config.Rgb565)
{
Android.Graphics.Bitmap result = Android.Graphics.Bitmap.CreateBitmap(size.Width, size.Height, Android.Graphics.Bitmap.Config.Rgb565);
using (BitmapRgb565Image bi = new BitmapRgb565Image(result))
bi.ConvertFrom(image);
return(result);
}
else
{
throw new NotImplementedException("Only Bitmap config of Argb888 or Rgb565 is supported.");
}
}
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.");
}
}
/// <summary>
/// Convert the Mat to Bitmap
/// </summary>
/// <param name="mat">The Mat to convert to Bitmap</param>
/// <param name="bitmap">The bitmap, must be of the same size and has bitmap config type of either Argb888 or Rgb565</param>
/// <returns>The Bitmap</returns>
public static void ToBitmap(this Mat mat, Android.Graphics.Bitmap bitmap)
{
System.Drawing.Size size = mat.Size;
if (!(size.Width == bitmap.Width && size.Height == bitmap.Height))
{
throw new Exception("Bitmap size doesn't match the Mat size");
}
Android.Graphics.Bitmap.Config config = bitmap.GetConfig();
if (config == Android.Graphics.Bitmap.Config.Argb8888)
{
int channels = mat.NumberOfChannels;
using (BitmapArgb8888Image bi = new BitmapArgb8888Image(bitmap))
{
if (channels == 1)
{
CvInvoke.CvtColor(mat, bi.Mat, ColorConversion.Gray2Rgba);
}
else if (channels == 3)
{
CvInvoke.CvtColor(mat, bi, ColorConversion.Bgr2Rgba);
}
else if (channels == 4)
{
CvInvoke.CvtColor(mat, bi, ColorConversion.Bgra2Rgba);
}
else
{
using (Image <Rgba, Byte> tmp = mat.ToImage <Rgba, Byte>())
{
tmp.Copy(bi, null);
}
}
}
}
else if (config == Android.Graphics.Bitmap.Config.Rgb565)
{
using (BitmapRgb565Image bi = new BitmapRgb565Image(bitmap))
using (Image <Bgr, Byte> tmp = mat.ToImage <Bgr, Byte>())
bi.ConvertFrom(tmp);
}
else
{
throw new NotImplementedException("Only Bitmap config of Argb888 or Rgb565 is supported.");
}
}
//#region Conversion with Bitmap
/// <summary>
/// The Get property provide a more efficient way to convert Image<Gray, Byte>, Image<Bgr, Byte> and Image<Bgra, Byte> into Bitmap
/// such that the image data is <b>shared</b> with Bitmap.
/// If you change the pixel value on the Bitmap, you change the pixel values on the Image object as well!
/// For other types of image this property has the same effect as ToBitmap()
/// <b>Take extra caution not to use the Bitmap after the Image object is disposed</b>
/// The Set property convert the bitmap to this Image type.
/// </summary>
public static Image <TColor, TDepth> ToImage <TColor, TDepth>(this Bitmap bitmap)
where TColor : struct, IColor
where TDepth : new()
{
#region reallocate memory if necessary
Size size = new Size(bitmap.Width, bitmap.Height);
Image <TColor, TDepth> image = new Image <TColor, TDepth>(size);
/*
* if (image.Ptr == IntPtr.Zero)
* {
* image.AllocateData(size.Height, size.Width, image.NumberOfChannels);
* }
* else if (!Size.Equals(size))
* {
* image.DisposeObject();
* image.AllocateData(size.Height, size.Width, image.NumberOfChannels);
* }*/
#endregion
Android.Graphics.Bitmap.Config config = bitmap.GetConfig();
if (config.Equals(Android.Graphics.Bitmap.Config.Argb8888))
{
using (BitmapArgb8888Image bi = new BitmapArgb8888Image(bitmap))
{
image.ConvertFrom(bi);
}
}
else if (config.Equals(Android.Graphics.Bitmap.Config.Rgb565))
{
int[] values = new int[size.Width * size.Height];
bitmap.GetPixels(values, 0, size.Width, 0, 0, size.Width, size.Height);
GCHandle handle = GCHandle.Alloc(values, GCHandleType.Pinned);
using (Image <Bgra, Byte> bgra = new Image <Bgra, byte>(size.Width, size.Height, size.Width * 4, handle.AddrOfPinnedObject()))
{
image.ConvertFrom(bgra);
}
handle.Free();
}
else
{
throw new NotImplementedException(String.Format("Coping from Bitmap of {0} is not implemented", config));
}
return(image);
}
/// <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.");
}
}