public bool ReadFile(String fileName, Mat mat, CvEnum.ImreadModes loadType)
{
try
{
int rotation = 0;
Android.Media.ExifInterface exif = new Android.Media.ExifInterface(fileName);
int orientation = exif.GetAttributeInt(Android.Media.ExifInterface.TagOrientation, int.MinValue);
switch (orientation)
{
case (int)Android.Media.Orientation.Rotate270:
rotation = 270;
break;
case (int)Android.Media.Orientation.Rotate180:
rotation = 180;
break;
case (int)Android.Media.Orientation.Rotate90:
rotation = 90;
break;
}
using (Android.Graphics.Bitmap bmp = Android.Graphics.BitmapFactory.DecodeFile(fileName))
{
if (rotation == 0)
{
bmp.ToMat(mat);
}
else
{
Android.Graphics.Matrix matrix = new Android.Graphics.Matrix();
matrix.PostRotate(rotation);
using (Android.Graphics.Bitmap rotated = Android.Graphics.Bitmap.CreateBitmap(bmp, 0, 0, bmp.Width, bmp.Height, matrix, true))
{
//manually disposed sooner such that memory is released.
bmp.Dispose();
rotated.ToMat(mat);
}
}
}
return(true);
}
catch (Exception e)
{
Debug.WriteLine(e);
//throw;
return(false);
}
}
public bool ReadFile(String fileName, Mat mat, CvEnum.ImreadModes loadType)
{
try
{
using (CGDataProvider provider = new CGDataProvider(fileName))
using (CGImage tmp = CGImage.FromPNG(provider, null, false, CGColorRenderingIntent.Default))
{
CGImageExtension.ConvertCGImageToArray(tmp, mat, loadType);
}
return(true);
}
catch (Exception e)
{
Debug.WriteLine(e);
//throw;
return(false);
}
}
/// <summary>
/// Read the file into Mat using UIImage
/// </summary>
/// <param name="fileName">The image file to be read</param>
/// <param name="mat">The Mat to read the file into</param>
/// <param name="loadType">Image load type</param>
/// <returns>True if successfully read the file into the Mat</returns>
public bool ReadFile(String fileName, Mat mat, CvEnum.ImreadModes loadType)
{
try
{
//try again to load with UIImage
using (UIImage tmp = UIImage.FromFile(fileName))
{
tmp.CGImage.ToArray(mat, loadType);
}
return(true);
}
catch (Exception e)
{
Debug.WriteLine(e);
return(false);
}
}
public static Mat LoadMat(string name, CvEnum.ImreadModes mode = ImreadModes.AnyColor)
{
//return new Mat(AssetsUtil.Assets, name);
return(AssetsUtil.Assets.GetMat(name, mode));
}
