int nOrients, int softBin, bool full, float clip )
{
float *N, *R; const int hb=h/binSize, wb=w/binSize, nb=hb*wb;
+ (void) nb;
// compute unnormalized gradient histograms
R = (float*) wrCalloc(wb*hb*nOrients,sizeof(float));
gradHist( M, O, R, h, w, binSize, nOrients, softBin, full );