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◆ extract_peaks()
| std::vector< std::vector< double > > MayaFlux::Yantra::extract_peaks | ( | const std::vector< std::span< const double > > & | channels, |
| double | threshold, | ||
| double | min_distance, | ||
| uint32_t | region_size | ||
| ) |
Definition at line 37 of file ExtractionHelper.cpp.
42{
43 std::vector<std::vector<double>> result;
44 result.reserve(channels.size());
45 for (const auto& ch : channels) {
46 if (ch.size() < 3) {
47 result.emplace_back();
48 continue;
49 }
50
51 const auto [lo, hi] = std::ranges::minmax_element(ch);
52 if (*hi - *lo < std::numeric_limits<double>::epsilon()) {
53 result.emplace_back();
54 continue;
55 }
56 const auto pos = D::peak_positions(ch, threshold, static_cast<size_t>(min_distance));
57 result.push_back(D::slice_intervals(ch,
58 D::merge_intervals(D::regions_around_positions(pos, region_size / 2, ch.size()))));
59 }
60
61 return result;
62}
References MayaFlux::Kinesis::Discrete::merge_intervals(), MayaFlux::Kinesis::Discrete::peak_positions(), MayaFlux::Kinesis::Discrete::regions_around_positions(), and MayaFlux::Kinesis::Discrete::slice_intervals().
Referenced by MayaFlux::Yantra::FeatureExtractor< InputType, OutputType >::extract_implementation().
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