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fixed a bug in the non-max-suppression filter procedure

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This commit is contained in:
lluis 2013-09-04 20:19:13 +02:00
parent bad927325f
commit dba336c0e3
1 changed files with 51 additions and 9 deletions
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60
modules/objdetect/src/erfilter.cpp
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@ -631,9 +631,10 @@ void ERFilterNM::er_merge(ERStat *parent, ERStat *child)
child->probability = classifier->eval(*child);
}
if ( ((classifier!=NULL)?(child->probability >= minProbability):true) &&
if ( (((classifier!=NULL)?(child->probability >= minProbability):true)||(nonMaxSuppression)) &&
((child->area >= (minArea*region_mask.rows*region_mask.cols)) &&
(child->area <= (maxArea*region_mask.rows*region_mask.cols))) )
(child->area <= (maxArea*region_mask.rows*region_mask.cols)) &&
(child->rect.width > 2) && (child->rect.height > 2)) )
{
num_accepted_regions++;
@ -699,38 +700,73 @@ ERStat* ERFilterNM::er_save( ERStat *er, ERStat *parent, ERStat *prev )
regions->back().parent = parent;
if (prev != NULL)
{
prev->next = &(regions->back());
}
else if (parent != NULL)
parent->child = &(regions->back());
ERStat *old_prev = NULL;
ERStat *this_er = &regions->back();
if (this_er->parent == NULL)
{
this_er->probability = 0;
}
if (nonMaxSuppression)
{
if (this_er->parent == NULL)
{
this_er->probability = 0; //TODO this makes sense in order to select at least one region in short tree's but is it really necessary?
this_er->max_probability_ancestor = this_er;
this_er->min_probability_ancestor = this_er;
//cout << "This is the root so now min_p is " << this_er->probability << " and max_p is " << this_er->probability << endl;
}
else
{
this_er->max_probability_ancestor = (this_er->probability > parent->max_probability_ancestor->probability)? this_er : parent->max_probability_ancestor;
this_er->min_probability_ancestor = (this_er->probability < parent->min_probability_ancestor->probability)? this_er : parent->min_probability_ancestor;
//cout << "This is NOT the root so now min_p is " << this_er->min_probability_ancestor->probability << " and max_p is " << this_er->max_probability_ancestor->probability << endl;
/*
if ( (this_er->max_probability_ancestor->probability > minProbability) && (this_er->max_probability_ancestor->probability - this_er->min_probability_ancestor->probability > minProbabilityDiff))
{
cout << " local máxima detcected on " << this_er->max_probability_ancestor->probability << endl;
this_er->max_probability_ancestor->local_maxima = true;
//TODO check here if the last local_maxima can be also suppressed, is the following correct?
//if (this_er->min_probability_ancestor->local_maxima)
// this_er->min_probability_ancestor->local_maxima = false;
this_er->max_probability_ancestor = this_er;
this_er->min_probability_ancestor = this_er;
cout << " so now min_p is " << this_er->min_probability_ancestor->probability << " and max_p is " << this_er->max_probability_ancestor->probability << endl;
}
else if ((this_er->min_probability_ancestor->local_maxima) && (this_er->probability > (this_er->min_probability_ancestor->probability))) {
cout << " NO local máxima detcected on " << this_er->max_probability_ancestor->probability << endl;
cout << " and min_p was local maxima and this_er->p > min_p" << endl;
cout << " so mark as local maxima "<< this_er->max_probability_ancestor << endl;
cout << " and unmark "<< this_er->min_probability_ancestor << endl;
this_er->max_probability_ancestor->local_maxima = true;
this_er->min_probability_ancestor->local_maxima = false;
}*/
if ( (this_er->max_probability_ancestor->probability > minProbability) && (this_er->max_probability_ancestor->probability - this_er->min_probability_ancestor->probability > minProbabilityDiff))
{
//cout << " local máxima detcected on " << this_er->max_probability_ancestor->probability << endl;
this_er->max_probability_ancestor->local_maxima = true;
if ((this_er->max_probability_ancestor == this_er) && (this_er->parent->local_maxima))
{
//cout << " local máxima undetcected on " << this_er->parent->probability << endl;
this_er->parent->local_maxima = false;
}
}
else if (this_er->probability < this_er->parent->probability)
{
this_er->min_probability_ancestor = this_er;
}
else if (this_er->probability > this_er->parent->probability)
{
this_er->max_probability_ancestor = this_er;
}
}
}
@ -769,7 +805,7 @@ ERStat* ERFilterNM::er_tree_filter ( InputArray image, ERStat * stat, ERStat *pa
findContours( region, contours, hierarchy, RETR_TREE, CHAIN_APPROX_NONE, Point(0, 0) );
//TODO check epsilon parameter of approxPolyDP (set empirically) : we want more precission
// if the region is very small because otherwise we'll loose all the convexities
approxPolyDP( Mat(contours[0]), contour_poly, max(rect.width,rect.height)/25, true );
approxPolyDP( Mat(contours[0]), contour_poly, min(rect.width,rect.height)/17, true );
bool was_convex = false;
@ -1084,8 +1120,13 @@ Ptr<ERFilter> createERFilterNM1(const Ptr<ERFilter::Callback>& cb, int threshold
CV_Assert( (thresholdDelta >= 0) && (thresholdDelta <= 128) );
CV_Assert( (minProbabilityDiff >= 0.) && (minProbabilityDiff <= 1.) );
<<<<<<< HEAD
Ptr<ERFilterNM> filter = makePtr<ERFilterNM>();
=======
Ptr<ERFilterNM> filter = new ERFilterNM();
>>>>>>> fixed a bug in the non-max-suppression filter procedure
if (cb == NULL)
filter->setCallback(makePtr<ERClassifierNM1>());
else
@ -1131,3 +1172,4 @@ Ptr<ERFilter> createERFilterNM2(const Ptr<ERFilter::Callback>& cb, float minProb
}
}