WPF 创建空白图片

            // 限制不能创建小于2x2的图片
            const int width = 2;
            const int height = width;
            
            BitmapSource.Create(width, height, 96, 96,
                PixelFormats.Indexed1,
                new BitmapPalette(new List<Color> { Colors.Transparent }),
                new byte[width * height], 1);

            const int width = 1;
            const int height = width;
            const double dpi = 96;
            // R G B 三个像素
            const int colorLength = 3;

            var image = BitmapSource.Create(width, height, dpi, dpi, PixelFormats.Bgr24, null, new byte[colorLength],
                colorLength);