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Forgot to add database.hpp (it was ignored)

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Joshua Moerman 2015-06-28 13:05:23 +02:00
parent 1a3589e689
commit 89629a0b30
1 changed files with 51 additions and 0 deletions
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lib/database.hpp Normal file
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#pragma once
#include <fingerprints.hpp>
#include <image_io.hpp>
#include <boost/serialization/access.hpp>
#include <boost/serialization/vector.hpp>
#include <string>
#include <vector>
template <typename Fingerprint, typename Traits = fingerprint_traits<Fingerprint>>
struct image_database {
using index = size_t;
static auto fingerprint_name() { return Fingerprint::name(); }
auto filename(index i) const { return filenames[i]; }
auto fingerprint(index i) const { return fingerprints[i]; }
auto size() const { return fingerprints.size(); }
void add(std::string const & filename){
auto && image = open_image(filename);
auto && fingerprint = Traits::calculate(image);
filenames.push_back(filename);
fingerprints.push_back(fingerprint);
}
//! returns a list of distances along with their index
auto distances_for_image(av::frame const & image) const {
std::vector<std::pair<typename Traits::distance_type, index>> ret;
ret.reserve(size());
auto const pre_fingerprint = Traits::pre_calculate(image);
for(auto&& fingerprint : fingerprints){
ret.emplace_back(Traits::distance(fingerprint, pre_fingerprint), ret.size());
}
return ret;
}
private:
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive & ar, const unsigned int /*version*/){
ar & filenames;
ar & fingerprints;
}
std::vector<std::string> filenames;
std::vector<Fingerprint> fingerprints;
};