C++ (Cpp) VO_Shape::GetTheShape Beispiele

Beispiel #1

/**
* @brief    Calculate some key lines on the face
* @param    oLine       Output  output those lines
* @param    iShape      Input   the known shape
* @param    iFaceParts  Input   the faceparts
* @param    oSubshape   Output  the output subshape, namely, the line is represented by a VO_Shape
* @param    partIdx     Input   which part is it
* @return   void
 */
void VO_KeyPoint::CalcFaceKeyline(
    std::vector<float>& oLine,
    const VO_Shape& iShape,
    const VO_FaceParts& iFaceParts,
    VO_Shape& oSubshape,
    unsigned int partIdx)
{
    oLine.resize(3);
    int dim = iShape.GetNbOfDim();

    cv::Vec4f line;
    std::vector<unsigned int> linePoints;

    switch(partIdx)
    {
    case VO_FacePart::NOSTRIL:
        linePoints = iFaceParts.VO_GetOneFacePart(VO_FacePart::NOSTRIL).GetIndexes();
        break;
    case VO_FacePart::MOUTHCORNERPOINTS:
        linePoints = iFaceParts.VO_GetOneFacePart(VO_FacePart::MOUTHCORNERPOINTS).GetIndexes();
        break;
    case VO_FacePart::PITCHAXISLINEPOINTS:
        linePoints = iFaceParts.VO_GetOneFacePart(VO_FacePart::PITCHAXISLINEPOINTS).GetIndexes();
        break;
    case VO_FacePart::EYECORNERPOINTS:
        linePoints = iFaceParts.VO_GetOneFacePart(VO_FacePart::EYECORNERPOINTS).GetIndexes();
        break;
    case VO_FacePart::MIDLINEPOINTS:
    default:
        linePoints = iFaceParts.VO_GetOneFacePart(VO_FacePart::EYECORNERPOINTS).GetIndexes();
        break;
    }
    
    oSubshape = iShape.GetSubShape(linePoints);

    // Explained by JIA Pei, some times, there is no linePoints, which means the specified parts are not in one of the database
    if(linePoints.size() >= 2 )
    {
        cv::fitLine( oSubshape.GetTheShape(), line, CV_DIST_L2, 0, 0.001, 0.001 );

        // Ax+By+C = 0
        oLine[0] = -line[1];
        oLine[1] = line[0];
        oLine[2] = line[1]*line[2]-line[0]*line[3];
    }
}