/// <summary>
/// 膨胀
/// </summary>
/// <param name="data">二维数据</param>
/// <param name="width">宽度</param>
/// <param name="height">高度</param>
/// <param name="type">膨胀模板的类型</param>
protected void delation(ref Byte[] data, Int32 width, Int32 height, FilterWindowType type, out Byte[] result)
{
result = new Byte[data.Length];
for (int i = 0; i < data.Length; i++)
{
result[i] = 255;
}
Int32[] set;
Boolean hasZero;
for (int i = 0; i < data.Length; i++)
{
hasZero = false;
set = getFilterWindow(i, width, height, type);
for (int j = 0; j < set.Length; j++)
{
if (data[set[j]] == 0)
{
hasZero = true;
break;
}
}
if (hasZero)
{
result[i] = 0;
}
}
}
/// <summary>
/// 获得滤波窗口
/// </summary>
/// <param name="index">当前像素索引</param>
/// <param name="width">二维数据宽度</param>
/// <param name="height">二维数据高度</param>
/// <param name="type">窗口类型</param>
protected Int32[] getFilterWindow(Int32 index, Int32 width, Int32 height, FilterWindowType type)
{
Int32 row = index / width;
Int32 col = index % width;
Int32[] set = null;
switch (type)
{
case FilterWindowType.Hori3:
set = new Int32[3];
set[0] = row * width + System.Math.Abs(col - 1) % width;
set[1] = index;
set[2] = row * width + (col + 1) % width;
break;
case FilterWindowType.Vert3:
set = new Int32[3];
set[0] = System.Math.Abs(row - 1) % height * width + col;
set[1] = index;
set[2] = (row + 1) % height * width + col;
break;
case FilterWindowType.Cros3:
set = new Int32[5];
set[0] = System.Math.Abs(row - 1) % height * width + col;
set[1] = row * width + System.Math.Abs(col - 1) % width;
set[2] = index;
set[3] = row * width + (col + 1) % width;
set[4] = (row + 1) % height * width + col;
break;
case FilterWindowType.Rect3:
set = new Int32[9];
set[0] = System.Math.Abs(row - 1) % height * width + System.Math.Abs(col - 1) % width;
set[1] = System.Math.Abs(row - 1) % height * width + col;
set[2] = System.Math.Abs(row - 1) % height * width + (col + 1) % width;
set[3] = row * width + System.Math.Abs(col - 1) % width;
set[4] = index;
set[5] = row * width + (col + 1) % width;
set[6] = (row + 1) % height * width + System.Math.Abs(col - 1) % width;
set[7] = (row + 1) % height * width + col;
set[8] = (row + 1) % height * width + (col + 1) % width;
break;
case FilterWindowType.Hori5:
set = new Int32[5];
set[0] = row * width + System.Math.Abs(col - 2) % width;
set[1] = row * width + System.Math.Abs(col - 1) % width;
set[2] = index;
set[3] = row * width + (col + 1) % width;
set[4] = row * width + (col + 2) % width;
break;
case FilterWindowType.Vert5:
set = new Int32[5];
set[0] = System.Math.Abs(row - 2) % height * width + col;
set[1] = System.Math.Abs(row - 1) % height * width + col;
set[2] = index;
set[3] = (row + 1) % height * width + col;
set[4] = (row + 2) % height * width + col;
break;
case FilterWindowType.Cros5:
set = new Int32[9];
set[0] = System.Math.Abs(row - 2) % height * width + col;
set[1] = System.Math.Abs(row - 1) % height * width + col;
set[2] = row * width + System.Math.Abs(col - 2) % width;
set[3] = row * width + System.Math.Abs(col - 1) % width;
set[4] = index;
set[5] = row * width + (col + 1) % width;
set[6] = row * width + (col + 2) % width;
set[7] = (row + 1) % height * width + col;
set[8] = (row + 2) % height * width + col;
break;
case FilterWindowType.Rect5:
set = new Int32[25];
set[0] = System.Math.Abs(row - 2) % height * width + System.Math.Abs(col - 2) % width;
set[1] = System.Math.Abs(row - 2) % height * width + System.Math.Abs(col - 1) % width;
set[2] = System.Math.Abs(row - 2) % height * width + col;
set[3] = System.Math.Abs(row - 2) % height * width + (col + 1) % width;
set[4] = System.Math.Abs(row - 2) % height * width + (col + 2) % width;
set[5] = System.Math.Abs(row - 1) % height * width + System.Math.Abs(col - 2) % width;
set[6] = System.Math.Abs(row - 1) % height * width + System.Math.Abs(col - 1) % width;
set[7] = System.Math.Abs(row - 1) % height * width + col;
set[8] = System.Math.Abs(row - 1) % height * width + (col + 1) % width;
set[9] = System.Math.Abs(row - 1) % height * width + (col + 2) % width;
set[10] = row * width + System.Math.Abs(col - 2) % width;
set[11] = row * width + System.Math.Abs(col - 1) % width;
set[12] = index;
set[13] = row * width + System.Math.Abs(col + 1) % width;
set[14] = row * width + System.Math.Abs(col + 2) % width;
set[15] = (row + 1) % height * width + System.Math.Abs(col - 2) % width;
set[16] = (row + 1) % height * width + System.Math.Abs(col - 1) % width;
set[17] = (row + 1) % height * width + col;
set[18] = (row + 1) % height * width + System.Math.Abs(col + 1) % width;
set[19] = (row + 1) % height * width + System.Math.Abs(col + 2) % width;
set[20] = (row + 2) % height * width + System.Math.Abs(col - 2) % width;
set[21] = (row + 2) % height * width + System.Math.Abs(col - 1) % width;
set[22] = (row + 2) % height * width + col;
set[23] = (row + 2) % height * width + System.Math.Abs(col + 1) % width;
set[24] = (row + 2) % height * width + System.Math.Abs(col + 2) % width;
break;
}
return(set);
}
