DuplicateOpUtils Namespace Reference

Functions
qreal	minimizeEnergy (const qreal *m, qreal *sol, int w, int h)

Function Documentation

minimizeEnergy()

qreal DuplicateOpUtils::minimizeEnergy ( const qreal * m, qreal * sol, int w, int h )

inline

Definition at line 16 of file kis_duplicateop_p.h.

{
    qreal err = 0;
 
    if (h < 3 || w < 3) {
        int size = 3 * w * h;
 
        for (int i = 0; i < size; i++) {
            sol[i] = 1.0;
        }
 
        warnKrita << "WARNING: healing width or height are smaller than 3 px. The result will have artifacts!";
 
    } else {
        int rowstride = 3 * w;
 
        memcpy(sol, m, 3 * sizeof(qreal) * w);
        m += rowstride;
        sol += rowstride;
        for (int i = 1; i < h - 1; i++) {
            memcpy(sol, m, 3 * sizeof(qreal));
            m += 3; sol += 3;
            for (int j = 3; j < rowstride - 3; j++) {
                qreal tmp = *sol;
                *sol = ((*(m - 3) + * (m + 3) + * (m - rowstride) + * (m + rowstride)) + 2 * *m) / 6;
                qreal diff = *sol - tmp;
                err += diff * diff;
                m ++; sol ++;
            }
            memcpy(sol, m, 3 * sizeof(qreal));
            m += 3; sol += 3;
        }
        memcpy(sol, m, 3 * sizeof(qreal) * w);
    }
 
    return err;
}

References warnKrita.