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var newImage = new Bitmap(image.Width, image.Height,
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
var graphics = Graphics.FromImage(newImage);
graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
graphics.DrawImage(image, 0, 0);
graphics.Dispose();
return newImage;