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DWT concatenation and CDR

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This commit is contained in:
Antonin Portelli
2024-01-12 14:22:05 +01:00
parent 1604b4712f
commit 13fddf4947
3 changed files with 63 additions and 6 deletions
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23
lib/Numerical/DWT.cpp
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@ -135,3 +135,26 @@ DVec DWT::backward(const std::vector<DWTLevel>& dwt) const
return res;
}
// concatenate levels //////////////////////////////////////////////////////////
DVec DWT::concat(const std::vector<DWTLevel> &dwt, const int maxLevel, const bool dropLow)
{
unsigned int level = ((maxLevel >= 0) ? (maxLevel + 1) : dwt.size());
Index nlast = dwt[level - 1].first.size();
Index n = 2*dwt.front().first.size() - ((dropLow) ? nlast : 0);
Index pt = n, nl;
DVec res(n);
for (unsigned int l = 0; l < level; ++l)
{
nl = dwt[l].second.size();
pt -= nl;
res.segment(pt, nl) = dwt[l].second;
}
if (!dropLow)
{
res.segment(0, nl) = dwt[level-1].first;
}
return res;
}

2
lib/Numerical/DWT.hpp
View File

@ -46,6 +46,8 @@ public:
// DWT
std::vector<DWTLevel> forward(const DVec &data, const unsigned int level) const;
DVec backward(const std::vector<DWTLevel>& dwt) const;
// concatenate levels
static DVec concat(const std::vector<DWTLevel>& dwt, const int maxLevel = -1, const bool dropLow = false);
private:
DWTFilter filter_;
};