Tesseract  3.02
Public Member Functions
tesseract::PixelHistogram Class Reference

#include <devanagari_processing.h>

List of all members.

Public Member Functions

 PixelHistogram ()
 ~PixelHistogram ()
void Clear ()
int *const hist () const
int length () const
void ConstructVerticalCountHist (Pix *pix)
void ConstructHorizontalCountHist (Pix *pix)
int GetHistogramMaximum (int *count) const

Detailed Description

Definition at line 27 of file devanagari_processing.h.

Constructor & Destructor Documentation

tesseract::PixelHistogram::PixelHistogram ( ) [inline]

Definition at line 29 of file devanagari_processing.h.

                   {
    hist_ = NULL;
    length_ = 0;
  }
tesseract::PixelHistogram::~PixelHistogram ( ) [inline]

Definition at line 34 of file devanagari_processing.h.

                    {
    Clear();
  }

Member Function Documentation

void tesseract::PixelHistogram::Clear ( ) [inline]

Definition at line 38 of file devanagari_processing.h.

               {
    if (hist_) {
      delete[] hist_;
    }
    length_ = 0;
  }
void tesseract::PixelHistogram::ConstructHorizontalCountHist ( Pix *  pix)

Definition at line 486 of file devanagari_processing.cpp.

                                                          {
  Clear();
  Numa* counts = pixCountPixelsByRow(pix, NULL);
  length_ = numaGetCount(counts);
  hist_ = new int[length_];
  for (int i = 0; i < length_; ++i) {
    l_int32 val = 0;
    numaGetIValue(counts, i, &val);
    hist_[i] = val;
  }
  numaDestroy(&counts);
}
void tesseract::PixelHistogram::ConstructVerticalCountHist ( Pix *  pix)

Definition at line 468 of file devanagari_processing.cpp.

                                                        {
  Clear();
  int width = pixGetWidth(pix);
  int height = pixGetHeight(pix);
  hist_ = new int[width];
  length_ = width;
  int wpl = pixGetWpl(pix);
  l_uint32 *data = pixGetData(pix);
  for (int i = 0; i < width; ++i)
    hist_[i] = 0;
  for (int i = 0; i < height; ++i) {
    l_uint32 *line = data + i * wpl;
    for (int j = 0; j < width; ++j)
      if (GET_DATA_BIT(line, j))
        ++(hist_[j]);
  }
}
int tesseract::PixelHistogram::GetHistogramMaximum ( int *  count) const

Definition at line 454 of file devanagari_processing.cpp.

                                                        {
  int best_value = 0;
  for (int i = 0; i < length_; ++i) {
    if (hist_[i] > hist_[best_value]) {
      best_value = i;
    }
  }
  if (count) {
    *count = hist_[best_value];
  }
  return best_value;
}
int* const tesseract::PixelHistogram::hist ( ) const [inline]

Definition at line 45 of file devanagari_processing.h.

                          {
    return hist_;
  }
int tesseract::PixelHistogram::length ( ) const [inline]

Definition at line 49 of file devanagari_processing.h.

                     {
    return length_;
  }
The documentation for this class was generated from the following files: