Upload system with rotate image automatically as in windows 8.1 or facebook

Question

Today when viewing an image in windows 8.1 even if the image is lying down it automatically understands and shows correctly, in windows 7 appears the picture lying down. When sending this image to websites like facebook it appears correct. But when sending to a normal upload it appears lying down.

I thought the system read the EXIF photo but the image was made by a camera that apparently had no system to know whether it was lying or standing.

How to make a class/component that understands this photo and automatically turn it?

Answer 1

Using the class EXIFExtractor implemented and explained here, thus:

var bmp = new Bitmap(pathToImageFile);
var exif = new EXIFextractor(ref bmp, "n");

if (exif["Orientation"] != null)
{

    RotateFlipType flip = OrientationToFlipType(exif["Orientation"].ToString());

    if (flip != RotateFlipType.RotateNoneFlipNone) // Se a orientação já está correta
    {
        bmp.RotateFlip(flip);
        exif.setTag(0x112, "1");
        bmp.Save(pathToImageFile, ImageFormat.Jpeg);
    }
}


private static RotateFlipType OrientationToFlipType(string orientation)
{

    switch (int.Parse(orientation))
    {
        case 1:    
            return RotateFlipType.RotateNoneFlipNone;
            break;
        case 2:    
            return RotateFlipType.RotateNoneFlipX;
            break;
        case 3:    
            return RotateFlipType.Rotate180FlipNone;
            break;
        case 4:    
            return RotateFlipType.Rotate180FlipX;
            break;
        case 5:    
            return RotateFlipType.Rotate90FlipX;
            break;
        case 6:    
            return RotateFlipType.Rotate90FlipNone;
            break;
        case 7:    
            return RotateFlipType.Rotate270FlipX;
            break;
        case 8:    
            return RotateFlipType.Rotate270FlipNone;
            break;        
        default:    
            return RotateFlipType.RotateNoneFlipNone;    
    }

}

I took the example from here.

Without EXIF I think there’s no way.