[函数名称]

  二值图像投影         ImageProjection(WriteableBitmap src)

[算法说明]

[函数代码]

<pre class="csharp" name="code">        /// <summary>

        /// Get projections of X and Y direction.

        /// </summary>

        /// <param name="src">The source image.</param>

        /// <returns></returns>

        public static int[][] ImageProjection(WriteableBitmap src)////二值图像投影

        {

            if (src != null)

            {

                int w = src.PixelWidth;

                int h = src.PixelHeight;

                int[][] Centerpoint = new int[2][];

                Centerpoint[0] = new int[w+1];

                Centerpoint[1] = new int[h+1];

                int b = 0, g = 0, r = 0;

                byte[] temp = src.PixelBuffer.ToArray();

                for (int y = 0; y < h; y++)

                {

                    for (int x = 0; x < w * 4; x += 4)

                    {

                        b = temp[x + y * w * 4];

                        g = temp[x + 1 + y * w * 4];

                        r = temp[x + 2 + y * w * 4];

                        if (r + g + b == 0)

                        {

                            Centerpoint[1][y]++;

                        }

                    }

                }

                for (int x = 0; x < w * 4; x += 4)

                {

                    for (int y = 0; y < h; y++)

                    {

                        b = temp[x + y * w * 4];

                        g = temp[x + 1 + y * w * 4];

                        r = temp[x + 2 + y * w * 4];

                        if (r + g + b == 0)

                        {

                            Centerpoint[0][(int)(x/4)]++;

                        }

                    }

                }

                return Centerpoint;

            }

            else

            {

                return null;

            }

        }