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https://github.com/tesseract-ocr/tesseract.git
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133 lines
6.4 KiB
C
133 lines
6.4 KiB
C
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/**********************************************************************
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* File: tordmain.h (Formerly textordp.h)
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* Description: C++ top level textord code.
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* Author: Ray Smith
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* Created: Tue Jul 28 17:12:33 BST 1992
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*
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* (C) Copyright 1992, Hewlett-Packard Ltd.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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**********************************************************************/
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#ifndef TORDMAIN_H
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#define TORDMAIN_H
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#include <time.h>
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#include "varable.h"
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#include "ocrblock.h"
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#include "tessclas.h"
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#include "blobbox.h"
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#include "notdll.h"
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extern BOOL_VAR_H (textord_show_blobs, FALSE, "Display unsorted blobs");
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extern BOOL_VAR_H (textord_new_initial_xheight, TRUE,
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"Use test xheight mechanism");
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extern BOOL_VAR_H (textord_exit_after, FALSE,
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"Exit after completing textord");
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extern INT_VAR_H (textord_max_noise_size, 7, "Pixel size of noise");
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extern double_VAR_H (textord_blob_size_bigile, 95,
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"Percentile for large blobs");
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extern double_VAR_H (textord_noise_area_ratio, 0.7,
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"Fraction of bounding box for noise");
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extern double_VAR_H (textord_blob_size_smallile, 20,
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"Percentile for small blobs");
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extern double_VAR_H (textord_initialx_ile, 0.75,
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"Ile of sizes for xheight guess");
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extern double_VAR_H (textord_initialasc_ile, 0.90,
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"Ile of sizes for xheight guess");
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extern INT_VAR_H (textord_noise_sizefraction, 10,
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"Fraction of size for maxima");
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extern double_VAR_H (textord_noise_sizelimit, 0.5,
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"Fraction of x for big t count");
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extern INT_VAR_H (textord_noise_translimit, 16,
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"Transitions for normal blob");
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extern double_VAR_H (textord_noise_normratio, 2.0,
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"Dot to norm ratio for deletion");
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extern BOOL_VAR_H (textord_noise_rejwords, TRUE, "Reject noise-like words");
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extern BOOL_VAR_H (textord_noise_rejrows, TRUE, "Reject noise-like rows");
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extern double_VAR_H (textord_noise_syfract, 0.2,
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"xh fract error for norm blobs");
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extern double_VAR_H (textord_noise_sxfract, 0.4,
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"xh fract width error for norm blobs");
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extern INT_VAR_H (textord_noise_sncount, 1, "super norm blobs to save row");
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extern double_VAR_H (textord_noise_rowratio, 6.0,
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"Dot to norm ratio for deletion");
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extern BOOL_VAR_H (textord_noise_debug, FALSE, "Debug row garbage detector");
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extern double_VAR_H (textord_blshift_maxshift, 0.00, "Max baseline shift");
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extern double_VAR_H (textord_blshift_xfraction, 9.99,
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"Min size of baseline shift");
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//xiaofan
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extern STRING_EVAR_H (tessedit_image_ext, ".tif", "Externsion for image file");
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extern clock_t previous_cpu;
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void make_blocks_from_blobs( //convert & textord
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TBLOB *tessblobs, //tess style input
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const char *filename, //blob file
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ICOORD page_tr, //top right
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BOOL8 do_shift, //shift tess coords
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BLOCK_LIST *blocks //block list
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);
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void read_and_textord( //read .pb file
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const char *filename, //.pb file
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BLOCK_LIST *blocks);
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void edges_and_textord( //read .pb file
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const char *filename, //.pb file
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BLOCK_LIST *blocks);
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void assign_blobs_to_blocks( //split into groups
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PBLOB_LIST *blobs, //blobs to distribute
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BLOCK_LIST *blocks, //block list
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TO_BLOCK_LIST *land_blocks, //rotated for landscape
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TO_BLOCK_LIST *port_blocks //output list
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);
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void assign_blobs_to_blocks2( //split into groups
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BLOCK_LIST *blocks, //blocks to process
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TO_BLOCK_LIST *land_blocks, //rotated for landscape
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TO_BLOCK_LIST *port_blocks //output list
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);
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void filter_blobs( //split into groups
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ICOORD page_tr, //top right
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TO_BLOCK_LIST *blocks, //output list
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BOOL8 testing_on //for plotting
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);
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float filter_noise_blobs( //separate noise
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BLOBNBOX_LIST *src_list, //origonal list
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BLOBNBOX_LIST *noise_list, //noise list
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BLOBNBOX_LIST *small_list, //small blobs
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BLOBNBOX_LIST *large_list //large blobs
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);
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float filter_noise_blobs2( //separate noise
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BLOBNBOX_LIST *src_list, //origonal list
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BLOBNBOX_LIST *noise_list, //noise list
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BLOBNBOX_LIST *small_list, //small blobs
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BLOBNBOX_LIST *large_list //large blobs
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);
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void textord_page( //make rows & words
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ICOORD page_tr, //top right
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BLOCK_LIST *blocks, //block list
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TO_BLOCK_LIST *land_blocks, //rotated for landscape
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TO_BLOCK_LIST *port_blocks //output list
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);
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void cleanup_blocks( //remove empties
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BLOCK_LIST *blocks //list
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);
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BOOL8 clean_noise_from_row( //remove empties
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ROW *row //row to clean
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);
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void clean_noise_from_words( //remove empties
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ROW *row //row to clean
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);
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void tweak_row_baseline( //remove empties
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ROW *row //row to clean
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);
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INT32 blob_y_order( //sort function
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void *item1, //items to compare
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void *item2);
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#endif
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