/// <summary>
/// 投影
/// </summary>
/// <param name="data">二维数据</param>
/// <param name="width">数据宽度</param>
/// <param name="height">数据高度</param>
/// <param name="orientType">投影的方向(水平或垂直)</param>
/// <param name="average">是否去平均值</param>
/// <param name="result">投影的结果</param>
protected void projection(ref Byte[] data, Int32 width, Int32 height, ValueImage.Infrastructure.OrientationType orientType, Boolean average, out Int32[] result)
{
if (orientType == Infrastructure.OrientationType.Horizontal)
{
result = new Int32[height];
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
result[i] += data[i * width + j];
}
if (average)
{
result[i] /= width;
}
}
}
else if (orientType == Infrastructure.OrientationType.Vertical)
{
result = new Int32[width];
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
result[i] += data[j * width + i];
}
if (average)
{
result[i] /= height;
}
}
}
else
{
result = new Int32[0];
}
}
/// <summary>
/// 投影
/// </summary>
protected void projection(ref Byte[] data, Int32 width, Int32 height, Double angle, ValueImage.Infrastructure.OrientationType orientType, out Int32[] result)
{
if (angle == System.Math.PI / 2)
{
projection(ref data, width, height, orientType, false, out result);
return;
}
if (orientType == OrientationType.Horizontal)
{
result = new Int32[height];
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
Int32 y = ((Int32)((Double)i / System.Math.Tan(angle)) + j);
if (y >= 0 && y < height)
{
result[y] += data[j * width + i];
}
}
}
}
else if (orientType == OrientationType.Vertical)
{
result = new Int32[width];
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
Int32 x = ((Int32)((Double)j / System.Math.Tan(angle)) + i);
if (x >= 0 && x < width)
{
result[j * width + x] += data[j * width + i];
}
}
}
}
else
{
result = new Int32[0];
}
}
/// <summary>
/// 投影
/// </summary>
/// <param name="data">二维数据</param>
/// <param name="width">数据宽度</param>
/// <param name="height">数据高度</param>
/// <param name="orientType">投影的方向(水平或垂直)</param>
/// <param name="result">投影的结果</param>
protected void projection(ref Byte[] data, Int32 width, Int32 height, ValueImage.Infrastructure.OrientationType orientType, out Int32[] result)
{
this.projection(ref data, width, height, orientType, true, out result);
}
