/// <summary>
/// 轉換成Image並旋轉
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
private Image <Bgr, byte> FileToImageRotate(HttpPostedFileBase file)
{
using (MemoryStream ms = new MemoryStream())
{
var theImage = Image.FromStream(file.InputStream);
Bitmap bitmap = new Bitmap(theImage);
MemoryStream stream = new MemoryStream();
foreach (var item in theImage.PropertyItems)
{
bitmap.SetPropertyItem(item);
}
var exif = new EXIFextractor(ref bitmap, "n");
RotateFlipType flip = _webModel.GetOrientationToFlipType(exif["Orientation"] == null ? "0" : exif["Orientation"].ToString());
if (flip != RotateFlipType.Rotate180FlipNone)
{
foreach (var item in theImage.PropertyItems)
{
bitmap.SetPropertyItem(item);
}
}
bitmap.RotateFlip(flip);
//先不做回存tag動作(有BUG)
//exif.setTag(0x112, "1"); // Optional: reset orientation tag
bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);
stream.Position = 0;
byte[] image = new byte[stream.Length + 1];
stream.Read(image, 0, image.Length);
var faceImage = new Image <Bgr, byte>(new Bitmap(stream));
return(faceImage);
}
}