static void WrapHistograms(
vec_double& histbins)
{
for (int row = 0; row < GRIDHEIGHT; row++)
for (int col = 0; col < GRIDWIDTH; col++)
{
const int ibin = HistIndex(row, col, 0);
histbins[ibin] += histbins[ibin + BINS_PER_HIST]; // 360 wraps to 0
}
}
static void CopyHistsToDesc( // copy histograms to descriptor, skipping pad bins
VEC& desc, // out
const vec_double& histbins) // in
{
for (int row = 0; row < GRIDHEIGHT; row++)
for (int col = 0; col < GRIDWIDTH; col++)
memcpy(Buf(desc) +
(row * GRIDWIDTH + col) * BINS_PER_HIST,
&histbins[HistIndex(row, col, 0)],
BINS_PER_HIST * sizeof(histbins[0]));
}
void GetHistograms( // get all histogram bins
vec_double& histbins, // out
const int patchwidth, // in: in pixels
const vec_double& mags, // in
const vec_double& orients, // in
const vec_int& row_indices, // in
const vec_double& row_fracs, // in
const vec_int& col_indices, // in
const vec_double& col_fracs) // in
{
const int npix = SQ(patchwidth); // number of pixels in image patch
const int nhistbins =
(1 + GRIDHEIGHT + 1) * (1 + GRIDWIDTH + 1) * (BINS_PER_HIST + 1);
// resize and clear (the fill is needed if the size of histbins
// doesn't change, because in that case resize does nothing)
histbins.resize(nhistbins);
fill(histbins.begin(), histbins.end(), 0.);
for (int ipix = 0; ipix < npix; ipix++)
{
const double orient = orients[ipix];
const int iorient = int(floor(orient));
CV_DbgAssert(iorient >= 0 && iorient < BINS_PER_HIST);
const int ibin =
HistIndex(row_indices[ipix], col_indices[ipix], iorient);
double* const p = &histbins[ibin];
TrilinearAccumulate( // apportion grad mag across eight orientation bins
p[0], // ThisOrient
p[1], // NextOrient
p[BINS_PER_HIST + 1], // NextCol ThisOrient
p[BINS_PER_HIST + 2], // NextCol NextOrient
p[(GRIDWIDTH+2) * (BINS_PER_HIST+1)], // NextRow ThisOrient
p[(GRIDWIDTH+2) * (BINS_PER_HIST+1) + 1], // NextRow NextOrient
p[(GRIDWIDTH+3) * (BINS_PER_HIST+1)], // NextRow NextCol ThisOrient
p[(GRIDWIDTH+3) * (BINS_PER_HIST+1) + 1], // NextRow NextCol NextOrient
mags[ipix], // the mag that gets apportioned
row_fracs[ipix], // rowfrac
col_fracs[ipix], // colfrac
orient - iorient); // orientfrac
}
}
void GRIHist1DGridScrollWidget::SetYLabel(GRIHistogrammer *h, QString ylabel) {
if (HistIsPresent(h)) {
hist_ylabel_vec_[HistIndex(h)] = ylabel;
}
ResetGrid();
}
void GRIHist1DGridScrollWidget::SetAutoScale(GRIHistogrammer *h, bool autoscale_on) {
if (HistIsPresent(h)) {
hist_autoscale_on_vec_[HistIndex(h)] = autoscale_on;
}
ResetGrid();
}
void GRIHist1DGridScrollWidget::SetLogScale(GRIHistogrammer *h, bool logscale_on) {
if (HistIsPresent(h)) {
hist_logscale_on_vec_[HistIndex(h)] = logscale_on;
}
ResetGrid();
}
void GRIHist1DGridScrollWidget::SetOutlineColor(GRIHistogrammer *h, QColor qcolor) {
if (HistIsPresent(h)) {
hist_outline_color_vec_[HistIndex(h)] = qcolor;
}
ResetGrid();
}
void GRIHist1DGridScrollWidget::SetBackgroundColor(GRIHistogrammer *h, QColor qcolor) {
if (HistIsPresent(h)) {
hist_background_color_vec_[HistIndex(h)] = qcolor;
}
ResetGrid();
}
