tesseract
3.03
|
#include <baselinedetect.h>
Public Member Functions | |
BaselineDetect (int debug_level, const FCOORD &page_skew, TO_BLOCK_LIST *blocks) | |
~BaselineDetect () | |
void | ComputeStraightBaselines (bool use_box_bottoms) |
void | ComputeBaselineSplinesAndXheights (const ICOORD &page_tr, bool enable_splines, bool remove_noise, bool show_final_rows, Textord *textord) |
void | SetDebugImage (Pix *pixIn, const STRING &output_path) |
Definition at line 242 of file baselinedetect.h.
tesseract::BaselineDetect::BaselineDetect | ( | int | debug_level, |
const FCOORD & | page_skew, | ||
TO_BLOCK_LIST * | blocks | ||
) |
Definition at line 786 of file baselinedetect.cpp.
: page_skew_(page_skew), debug_level_(debug_level), pix_debug_(NULL), debug_file_prefix_("") { TO_BLOCK_IT it(blocks); for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) { TO_BLOCK* to_block = it.data(); BLOCK* block = to_block->block; POLY_BLOCK* pb = block->poly_block(); // A note about non-text blocks. // On output, non-text blocks are supposed to contain a single empty word // in each incoming text line. These mark out the polygonal bounds of the // block. Ideally no baselines should be required, but currently // make_words crashes if a baseline and xheight are not provided, so we // include non-text blocks here, but flag them for special treatment. bool non_text = pb != NULL && !pb->IsText(); blocks_.push_back(new BaselineBlock(debug_level_, non_text, to_block)); } }
Definition at line 806 of file baselinedetect.cpp.
{ pixDestroy(&pix_debug_); }
void tesseract::BaselineDetect::ComputeBaselineSplinesAndXheights | ( | const ICOORD & | page_tr, |
bool | enable_splines, | ||
bool | remove_noise, | ||
bool | show_final_rows, | ||
Textord * | textord | ||
) |
Definition at line 845 of file baselinedetect.cpp.
{ Pix* pix_spline = pix_debug_ ? pixConvertTo32(pix_debug_) : NULL; for (int i = 0; i < blocks_.size(); ++i) { BaselineBlock* bl_block = blocks_[i]; bl_block->PrepareForSplineFitting(page_tr, remove_noise); bl_block->FitBaselineSplines(enable_splines, show_final_rows, textord); if (pix_spline) { bl_block->DrawPixSpline(pix_spline); } if (show_final_rows) { bl_block->DrawFinalRows(page_tr); } } if (pix_spline) { STRING outfile_name = debug_file_prefix_ + "_spline.png"; pixWrite(outfile_name.string(), pix_spline, IFF_PNG); pixDestroy(&pix_spline); } }
void tesseract::BaselineDetect::ComputeStraightBaselines | ( | bool | use_box_bottoms | ) |
Definition at line 813 of file baselinedetect.cpp.
{ GenericVector<double> block_skew_angles; for (int i = 0; i < blocks_.size(); ++i) { BaselineBlock* bl_block = blocks_[i]; if (debug_level_ > 0) tprintf("Fitting initial baselines...\n"); if (bl_block->FitBaselinesAndFindSkew(use_box_bottoms)) { block_skew_angles.push_back(bl_block->skew_angle()); } } // Compute a page-wide default skew for blocks with too little information. double default_block_skew = page_skew_.angle(); if (!block_skew_angles.empty()) { default_block_skew = MedianOfCircularValues(M_PI, &block_skew_angles); } if (debug_level_ > 0) { tprintf("Page skew angle = %g\n", default_block_skew); } // Set bad lines in each block to the default block skew and then force fit // a linespacing model where it makes sense to do so. for (int i = 0; i < blocks_.size(); ++i) { BaselineBlock* bl_block = blocks_[i]; bl_block->ParallelizeBaselines(default_block_skew); bl_block->SetupBlockParameters(); // This replaced compute_row_stats. } }
void tesseract::BaselineDetect::SetDebugImage | ( | Pix * | pixIn, |
const STRING & | output_path | ||
) |
Definition at line 870 of file baselinedetect.cpp.
{ pixDestroy(&pix_debug_); pix_debug_ = pixClone(pixIn); debug_file_prefix_ = output_path; }