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Fixed scanning bug identified in comments in pull request #1119.

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NFA calculations now generate better line segments.
This commit is contained in:
Daniel Angelov 2014-05-20 21:25:31 +01:00
parent 983799d398
commit 3ca7717e17
1 changed files with 6 additions and 2 deletions
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8
modules/imgproc/src/lsd.cpp
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@ -1067,13 +1067,17 @@ double LineSegmentDetectorImpl::rect_nfa(const rect& rec) const
double left_x = min_y->p.x, right_x = min_y->p.x;
// Loop around all points in the region and count those that are aligned.
int min_iter = std::max(min_y->p.y, 0);
int max_iter = std::min(max_y->p.y, img_height - 1);
int min_iter = min_y->p.y;
int max_iter = max_y->p.y;
for(int y = min_iter; y <= max_iter; ++y)
{
if (y < 0 || y >= img_height) continue;
int adx = y * img_width + int(left_x);
for(int x = int(left_x); x <= int(right_x); ++x, ++adx)
{
if (x < 0 || x >= img_width) continue;
++total_pts;
if(isAligned(adx, rec.theta, rec.prec))
{