public Photo GetPhoto(int id)
        {
            var photo = db.Photos.FirstOrDefault(x => x.Id == id);

            using (var ms = new MemoryStream(photo.Image))
            {
                var bmp = new Bitmap(ms);

                var scaled = new Bitmap(bmp, new Size(bmp.Width / 2, bmp.Height / 2));
                photo.Image = PreprocessingHelper.ToByteArray(scaled, ImageFormat.Jpeg);

                return(photo);
            }
        }