将Qt QByteArray转换为OpenCV cv::InputArray

Question

如何将Qt QByteArray转换为cv::InputArray?

我需要传入一个自定义特征向量:

// Constructor
HoGDetector::HoGDetector(QObject *parent) :
    QObject(parent)
{
    qDebug() << "Creating HoG Detector";
    // Set the SVM Detector ( Default OpenCV One )
    m_HoG.setSVMDetector(HOGDescriptor::getDefaultPeopleDetector());
    // Read
    QFile svmVectorFile(":/descriptorvector.dat");
    QByteArray svmVector = svmVectorFile.readAll();
    // Set the SVM Detector - custom trained HoG Detector
    m_HoG.setSVMDetector(svmVector);
}

谢谢!

Answer 1

OpenCV知道如何将std:vector转换为InputArray，所以这应该可以做到:

m_HoG.setSVMDetector(std::vector<uchar>(svmVector.begin(), svmVector.end()));