原文:Win8 Metro(C#)数字图像处理--2.65形态学轮廓提取算法
[函数名称]
形态学轮廓提取函数
WriteableBitmap MorcontourextractionProcess(WriteableBitmap src)
/// <summary>
/// Morgraphy contour extraction process.
/// </summary>
/// <param name="src">The source image.</param>
/// <returns></returns>
public static WriteableBitmap MorcontourextractionProcess(WriteableBitmap src)////形态学轮廓提取
{
if (src != null)
{
int w = src.PixelWidth;
int h = src.PixelHeight;
WriteableBitmap corrosionImage = new WriteableBitmap(w, h);
byte[] temp = src.PixelBuffer.ToArray();
byte[] tempMask = (byte[])temp.Clone();
for (int j = 0; j < h; j++)
{
for (int i = 0; i < w; i++)
{
if (i == 0 || i == w - 1 || j == 0 || j == h - 1)
{
temp[i * 4 + j * w * 4] = (byte)255;
temp[i * 4 + 1 + j * w * 4] = (byte)255;
temp[i * 4 + 2 + j * w * 4] = (byte)255;
}
else
{
if (tempMask[i * 4 - 4 + j * w * 4] == 255 && tempMask[i * 4 + j * w * 4] == 255 && tempMask[i * 4 + 4 + j * w * 4] == 255
&& tempMask[i * 4 + (j - 1) * w * 4] == 255 && tempMask[i * 4 + (j + 1) * w * 4] == 255)
{
temp[i * 4 + j * w * 4] = (byte)255;
temp[i * 4 + 1 + j * w * 4] = (byte)255;
temp[i * 4 + 2 + j * w * 4] = (byte)255;
}
else
{
temp[i * 4 + j * w * 4] = 0;
temp[i * 4 + 1 + j * w * 4] = 0;
temp[i * 4 + 2 + j * w * 4] = 0;
}
}
}
}
for (int i = 0; i < temp.Length; i++)
{
temp[i] = (byte)(tempMask[i]-temp[i]);
}
Stream sTemp = corrosionImage.PixelBuffer.AsStream();
sTemp.Seek(0, SeekOrigin.Begin);
sTemp.Write(temp, 0, w * 4 * h);
return corrosionImage;
}
else
{
return null;
}
}
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