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Updated videostab module

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This commit is contained in:
Alexey Spizhevoy
2012-04-02 12:26:05 +00:00
parent abbfa848ba
commit 56b5e6d8a8
6 changed files with 19 additions and 39 deletions
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8
modules/videostab/src/motion_stabilizing.cpp
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@@ -58,13 +58,15 @@ void MotionFilterBase::stabilize(const Mat *motions, int size, Mat *stabilizatio
}
void GaussianMotionFilter::update()
void GaussianMotionFilter::setParams(int radius, float stdev)
{
float sigma = stdev_ > 0.f ? stdev_ : sqrt(static_cast<float>(radius_));
radius_ = radius;
stdev_ = stdev > 0.f ? stdev : sqrt(static_cast<float>(radius_));
float sum = 0;
weight_.resize(2*radius_ + 1);
for (int i = -radius_; i <= radius_; ++i)
sum += weight_[radius_ + i] = std::exp(-i*i/(sigma*sigma));
sum += weight_[radius_ + i] = std::exp(-i*i/(stdev_*stdev_));
for (int i = -radius_; i <= radius_; ++i)
weight_[radius_ + i] /= sum;
}