| public GetSum ( int x, int y, int width, int height ) : long | ||
| x | int | The horizontal position of the rectangle |
| y | int | The vertical position of the rectangle |
| width | int | The rectangle's width |
| height | int | The rectangle's height |
| return | long | |
public long GetSum(int x, int y, int width, int height)
{
int a = nWidth * (y) + (x);
int b = nWidth * (y + height) + (x + width);
int c = nWidth * (y + height) + (x);
int d = nWidth * (y) + (x + width);
return nSum[a] + nSum[b] - nSum[c] - nSum[d];
}
/// <summary>
/// Gets the sum of the areas of the rectangular features in an integral image.
/// </summary>
///
public double GetSum(IntegralImage2 image, int x, int y)
{
double sum = 0.0;
if (!Tilted)
{
// Compute the sum for a standard feature
foreach (HaarRectangle rect in Rectangles)
{
sum += image.GetSum(x + rect.ScaledX, y + rect.ScaledY,
rect.ScaledWidth, rect.ScaledHeight) * rect.ScaledWeight;
}
}
else
{
// Compute the sum for a rotated feature
foreach (HaarRectangle rect in Rectangles)
{
sum += image.GetSumT(x + rect.ScaledX, y + rect.ScaledY,
rect.ScaledWidth, rect.ScaledHeight) * rect.ScaledWeight;
}
}
return sum;
}
