/// <summary>
/// Print current pixel's coordinate
/// </summary>
/// <param name="image"></param>
/// <param name="iterator"></param>
private void PrintCoordinate(IplImage image, CvLineIterator iterator)
{
/* ROIは設定されていないと仮定している．もし設定されている場合には考慮する必要がある．*/
int offset = iterator.Ptr.ToInt32() - image.ImageData.ToInt32();
int y = offset / image.WidthStep;
int x = (offset - y * image.WidthStep) / (3 * sizeof(byte) /* ピクセルのサイズ */);
Console.WriteLine("(x:{0}, y:{1})", x, y);
}
/// <summary>
/// Calculate sum of line pixels (wrapper style)
/// </summary>
/// <param name="image"></param>
/// <param name="pt1"></param>
/// <param name="pt2"></param>
/// <returns></returns>
private CvScalar SumLinePixelsManaged(IplImage image, CvPoint pt1, CvPoint pt2)
{
double blue_sum = 0, green_sum = 0, red_sum = 0;
CvLineIterator iterator = new CvLineIterator(image, pt1, pt2, PixelConnectivity.Connectivity_8, false);
foreach (CvScalar pixel in iterator)
{
blue_sum += pixel.Val0; //blue_sum += iterator.ptr[0];
green_sum += pixel.Val1; //green_sum += iterator.ptr[1];
red_sum += pixel.Val2; //red_sum += iterator.ptr[2];
PrintCoordinate(image, iterator);
}
return new CvScalar(blue_sum, green_sum, red_sum);
}
/// <summary>
/// Calculate sum of line pixels (wrapper style)
/// </summary>
/// <param name="image"></param>
/// <param name="pt1"></param>
/// <param name="pt2"></param>
/// <returns></returns>
private CvScalar SumLinePixelsManaged(IplImage image, CvPoint pt1, CvPoint pt2)
{
double blueSum = 0, greenSum = 0, redSum = 0;
var iterator = new CvLineIterator(image, pt1, pt2, PixelConnectivity.Connectivity8, false);
foreach (CvScalar pixel in iterator)
{
blueSum += pixel.Val0; //blue_sum += iterator.ptr[0];
greenSum += pixel.Val1; //green_sum += iterator.ptr[1];
redSum += pixel.Val2; //red_sum += iterator.ptr[2];
PrintCoordinate(image, iterator);
}
return(new CvScalar(blueSum, greenSum, redSum));
}
/// <summary>
/// Print current pixel's coordinate
/// </summary>
/// <param name="image"></param>
/// <param name="iterator"></param>
private void PrintCoordinate(IplImage image, CvLineIterator iterator)
{
/* ROIは設定されていないと仮定している．もし設定されている場合には考慮する必要がある．*/
int offset = iterator.Ptr.ToInt32() - image.ImageData.ToInt32();
int y = offset / image.WidthStep;
int x = (offset - y * image.WidthStep) / (3 * sizeof(byte) /* ピクセルのサイズ */);
Console.WriteLine("(x:{0}, y:{1})", x, y);
}
