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add detectAt to soft cascade

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This commit is contained in:
marina.kolpakova 2012-09-13 21:19:01 +04:00
parent 801368ee82
commit 8d90b973b0
1 changed files with 130 additions and 109 deletions
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239
modules/objdetect/src/softcascade.cpp
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@ -66,6 +66,8 @@ struct Octave
size(cvRound(origObjSize.width * scale), cvRound(origObjSize.height * scale)),
shrinkage((int)fn[SC_OCT_SHRINKAGE])
{}
int index() const {return (int)log(scale);}
};
const char *const Octave::SC_OCT_SCALE = "scale";
@ -182,6 +184,89 @@ struct Level
// {1, 2, 1, 2}
// };
void calcHistBins(const cv::Mat& grey, cv::Mat& magIntegral, std::vector<cv::Mat>& histInts,
const int bins, int shrinkage)
{
CV_Assert( grey.type() == CV_8U);
float scale = 1.f / shrinkage;
const int rows = grey.rows + 1;
const int cols = grey.cols + 1;
cv::Size intSumSize(cols, rows);
histInts.clear();
std::vector<cv::Mat> hist;
for (int bin = 0; bin < bins; ++bin)
{
hist.push_back(cv::Mat(rows, cols, CV_32FC1));
}
cv::Mat df_dx, df_dy, mag, angle;
cv::Sobel(grey, df_dx, CV_32F, 1, 0);
cv::Sobel(grey, df_dy, CV_32F, 0, 1);
cv::cartToPolar(df_dx, df_dy, mag, angle, true);
const float magnitudeScaling = 1.0 / sqrt(2);
mag *= magnitudeScaling;
angle /= 60;
for (int h = 0; h < mag.rows; ++h)
{
float* magnitude = mag.ptr<float>(h);
float* ang = angle.ptr<float>(h);
for (int w = 0; w < mag.cols; ++w)
{
hist[(int)ang[w]].ptr<float>(h)[w] = magnitude[w];
}
}
for (int bin = 0; bin < bins; ++bin)
{
cv::Mat shrunk, sum;
cv::resize(hist[bin], shrunk, cv::Size(), scale, scale, cv::INTER_AREA);
cv::integral(shrunk, sum);
histInts.push_back(sum);
}
cv::Mat shrMag;
cv::resize(mag, shrMag, cv::Size(), scale, scale, cv::INTER_AREA);
cv::integral(shrMag, magIntegral, mag.depth());
}
struct ChannelStorage
{
std::vector<cv::Mat> hog;
cv::Mat magnitude;
cv::Mat luv;
int shrinkage;
enum {HOG_BINS = 6};
ChannelStorage() {}
ChannelStorage(const cv::Mat& colored, int shr) : shrinkage(shr)
{
cv::Mat _luv;
cv::cvtColor(colored, _luv, CV_BGR2Luv);
cv::integral(luv, luv);
cv::Mat grey;
cv::cvtColor(colored, grey, CV_RGB2GRAY);
calcHistBins(grey, magnitude, hog, HOG_BINS, shrinkage);
}
float get(int chennel, cv::Rect area) const
{
return 1.f;
}
};
}
struct cv::SoftCascade::Filds
@ -203,28 +288,38 @@ struct cv::SoftCascade::Filds
std::vector<Level> levels;
// typedef std::vector<Stage>::iterator stIter_t;
// // carrently roi must be save for out of ranges.
// void detectInRoi(const cv::Rect& roi, const Integral& ints, std::vector<cv::Rect>& objects, const int step)
// {
// for (int dy = roi.y; dy < roi.height; dy+=step)
// for (int dx = roi.x; dx < roi.width; dx += step)
// {
// applyCascade(ints, dx, dy);
// }
// }
// void applyCascade(const Integral& ints, const int x, const int y)
// {
// for (stIter_t sIt = stages.begin(); sIt != stages.end(); ++sIt)
// {
// Stage& stage = *sIt;
// }
// }
typedef std::vector<Octave>::iterator octIt_t;
void detectAt(const Level& level, const int dx, const int dy, const ChannelStorage& storage,
const std::vector<cv::Rect>& detections) const
{
float detectionScore = 0.f;
const Octave& octave = *(level.octave);
int stBegin = octave.index() * octave.stages, stEnd = stBegin + octave.stages;
for(int st = stBegin; st < stEnd; ++st)
{
const Stage& stage = stages[st];
if (detectionScore > stage.threshold)
{
int nId = st * 3;
const Node& node = nodes[nId];
const Feature& feature = features[node.feature];
float sum = storage.get(feature.channel, feature.rect);
int next = (sum >= node.threshold)? 2 : 1;
const Node& leaf = nodes[nId + next];
const Feature& fLeaf = features[node.feature];
sum = storage.get(feature.channel, feature.rect);
int lShift = (next - 1) * 2 + (sum >= leaf.threshold) ? 1 : 0;
float impact = leaves[nId + lShift];
detectionScore += impact;
}
}
}
octIt_t fitOctave(const float& logFactor)
{
float minAbsLog = FLT_MAX;
@ -407,90 +502,9 @@ bool cv::SoftCascade::load( const string& filename, const float minScale, const
return true;
}
namespace {
void calcHistBins(const cv::Mat& grey, cv::Mat& magIntegral, std::vector<cv::Mat>& histInts, const int bins, int shrinkage)
{
CV_Assert( grey.type() == CV_8U);
float scale = 1.f / shrinkage;
const int rows = grey.rows + 1;
const int cols = grey.cols + 1;
cv::Size intSumSize(cols, rows);
histInts.clear();
std::vector<cv::Mat> hist;
for (int bin = 0; bin < bins; ++bin)
{
hist.push_back(cv::Mat(rows, cols, CV_32FC1));
}
cv::Mat df_dx, df_dy, mag, angle;
cv::Sobel(grey, df_dx, CV_32F, 1, 0);
cv::Sobel(grey, df_dy, CV_32F, 0, 1);
cv::cartToPolar(df_dx, df_dy, mag, angle, true);
const float magnitudeScaling = 1.0 / sqrt(2);
mag *= magnitudeScaling;
angle /= 60;
for (int h = 0; h < mag.rows; ++h)
{
float* magnitude = mag.ptr<float>(h);
float* ang = angle.ptr<float>(h);
for (int w = 0; w < mag.cols; ++w)
{
hist[(int)ang[w]].ptr<float>(h)[w] = magnitude[w];
}
}
for (int bin = 0; bin < bins; ++bin)
{
cv::Mat shrunk, sum;
cv::resize(hist[bin], shrunk, cv::Size(), scale, scale, cv::INTER_AREA);
cv::integral(shrunk, sum);
histInts.push_back(sum);
}
cv::Mat shrMag;
cv::resize(mag, shrMag, cv::Size(), scale, scale, cv::INTER_AREA);
cv::integral(shrMag, magIntegral, mag.depth());
}
struct ChannelStorage
{
std::vector<cv::Mat> hog;
cv::Mat luv;
cv::Mat magnitude;
int shrinkage;
enum {HOG_BINS = 6};
ChannelStorage() {}
ChannelStorage(const cv::Mat& colored, int shr) : shrinkage(shr)
{
cv::Mat _luv;
cv::cvtColor(colored, _luv, CV_BGR2Luv);
cv::integral(luv, luv);
cv::Mat grey;
cv::cvtColor(colored, grey, CV_RGB2GRAY);
calcHistBins(grey, magnitude, hog, HOG_BINS, shrinkage);
}
};
}
void cv::SoftCascade::detectMultiScale(const Mat& image, const std::vector<cv::Rect>& rois, std::vector<cv::Rect>& objects,
const int step, const int rejectfactor)// add step scaling
void cv::SoftCascade::detectMultiScale(const Mat& image, const std::vector<cv::Rect>& rois,
std::vector<cv::Rect>& objects,
const int step, const int rejectfactor)
{
typedef std::vector<cv::Rect>::const_iterator RIter_t;
// only color images are supperted
@ -506,10 +520,17 @@ void cv::SoftCascade::detectMultiScale(const Mat& image, const std::vector<cv::R
// create integrals
ChannelStorage storage(image, fld.shrinkage);
// for (RIter_t it = rois.begin(); it != rois.end(); ++it)
// {
// const cv::Rect& roi = *it;
// (*filds).detectInRoi(roi, integrals, objects, step);
// }
// object candidates
std::vector<cv::Rect> detections;
typedef std::vector<Level>::const_iterator lIt;
for (lIt it = fld.levels.begin(); it != fld.levels.end(); ++it)
{
const Level& level = *it;
for (int dy = 0; dy < level.workRect.height; ++dy)
for (int dx = 0; dx < level.workRect.width; ++dx)
fld.detectAt(level, dx, dy, storage, detections);
}
std::swap(detections, objects);
}