本文整理汇总了C++中Segmentation::getSegmentationBoundaries方法的典型用法代码示例。如果您正苦于以下问题：C++ Segmentation::getSegmentationBoundaries方法的具体用法？C++ Segmentation::getSegmentationBoundaries怎么用？C++ Segmentation::getSegmentationBoundaries使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Segmentation的用法示例。
在下文中一共展示了Segmentation::getSegmentationBoundaries方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: keyOfChromagram
KeyDetectionResult KeyFinder::keyOfChromagram(
Workspace& workspace,
const Parameters& params
) const {
KeyDetectionResult result;
// working copy of chromagram
Chromagram* ch = new Chromagram(*workspace.chroma);
ch->reduceToOneOctave();
// get harmonic change signal and segment
Segmentation segmenter;
std::vector<unsigned int> segmentBoundaries = segmenter.getSegmentationBoundaries(ch, params);
segmentBoundaries.push_back(ch->getHops()); // sentinel
// get key estimates for each segment
KeyClassifier classifier(
params.getSimilarityMeasure(),
params.getToneProfile(),
params.getOffsetToC(),
params.getCustomToneProfile()
);
std::vector<float> keyWeights(24); // TODO: not ideal using int cast of key_t enum. Hash?
for (int s = 0; s < (signed) segmentBoundaries.size() - 1; s++) {
KeyDetectionResultSegment segment;
segment.firstHop = segmentBoundaries[s];
segment.lastHop = segmentBoundaries[s+1] - 1;
// collapse segment's time dimension
std::vector<float> segmentChroma(ch->getBands(), 0.0);
for (unsigned int hop = segment.firstHop; hop <= segment.lastHop; hop++) {
for (unsigned int band = 0; band < ch->getBands(); band++) {
float value = ch->getMagnitude(hop, band);
segmentChroma[band] += value;
segment.energy += value;
}
}
segment.chromaVector = segmentChroma;
segment.key = classifier.classify(segmentChroma);
if (segment.key != SILENCE)
keyWeights[segment.key] += segment.energy;
result.segments.push_back(segment);
}
delete ch;
// get global key
result.globalKeyEstimate = SILENCE;
float mostCommonKeyWeight = 0.0;
for (int k = 0; k < (signed)keyWeights.size(); k++) {
if (keyWeights[k] > mostCommonKeyWeight) {
mostCommonKeyWeight = keyWeights[k];
result.globalKeyEstimate = (key_t)k;
}
}
return result;
}