mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-18 11:28:51 +08:00
425d593ebe
git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk/trunk@2 d0cd1f9f-072b-0410-8dd7-cf729c803f20
154 lines
4.4 KiB
C
154 lines
4.4 KiB
C
/* -*-C-*-
|
|
********************************************************************************
|
|
*
|
|
* File: chop.h (Formerly chop.h)
|
|
* Description:
|
|
* Author: Mark Seaman, SW Productivity
|
|
* Created: Fri Oct 16 14:37:00 1987
|
|
* Modified: Wed Jul 10 14:47:37 1991 (Mark Seaman) marks@hpgrlt
|
|
* Language: C
|
|
* Package: N/A
|
|
* Status: Reusable Software Component
|
|
*
|
|
* (c) Copyright 1987, Hewlett-Packard Company.
|
|
** Licensed under the Apache License, Version 2.0 (the "License");
|
|
** you may not use this file except in compliance with the License.
|
|
** You may obtain a copy of the License at
|
|
** http://www.apache.org/licenses/LICENSE-2.0
|
|
** Unless required by applicable law or agreed to in writing, software
|
|
** distributed under the License is distributed on an "AS IS" BASIS,
|
|
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
** See the License for the specific language governing permissions and
|
|
** limitations under the License.
|
|
*
|
|
*******************************************************************************/
|
|
|
|
#ifndef CHOP_H
|
|
#define CHOP_H
|
|
|
|
/*----------------------------------------------------------------------
|
|
I n c l u d e s
|
|
----------------------------------------------------------------------*/
|
|
#include "oldheap.h"
|
|
#include "seam.h"
|
|
|
|
/*----------------------------------------------------------------------
|
|
T y p e s
|
|
---------------------------------------------------------------------*/
|
|
#define MAX_NUM_POINTS 50
|
|
typedef HEAP *POINT_GROUP;
|
|
typedef HEAP *SPLIT_GROUP;
|
|
|
|
/*----------------------------------------------------------------------
|
|
V a r i a b l e s
|
|
----------------------------------------------------------------------*/
|
|
extern int chop_enable;
|
|
extern int chop_debug;
|
|
extern int same_distance;
|
|
extern int split_length;
|
|
extern float center_knob;
|
|
extern float overlap_knob;
|
|
extern float split_dist_knob;
|
|
extern float width_change_knob;
|
|
extern float sharpness_knob;
|
|
extern int min_outline_area;
|
|
extern int min_outline_points;
|
|
extern float good_split;
|
|
extern float ok_split;
|
|
extern int chop_enable;
|
|
|
|
/*----------------------------------------------------------------------
|
|
M a c r o s
|
|
----------------------------------------------------------------------*/
|
|
/**********************************************************************
|
|
* point_bend_angle
|
|
*
|
|
* Measure the angle of bend at this edge point. The argument should
|
|
* be of type EDGEPT.
|
|
**********************************************************************/
|
|
#define point_bend_angle(point) \
|
|
(angle_change ((point)->prev, (point), (point)->next))
|
|
|
|
/*----------------------------------------------------------------------
|
|
F u n c t i o n s
|
|
----------------------------------------------------------------------*/
|
|
PRIORITY point_priority(EDGEPT *point);
|
|
|
|
void add_point_to_list(POINT_GROUP point_list, EDGEPT *point);
|
|
|
|
int angle_change(EDGEPT *point1, EDGEPT *point2, EDGEPT *point3);
|
|
|
|
void init_chop();
|
|
|
|
int is_little_chunk(EDGEPT *point1, EDGEPT *point2);
|
|
|
|
int is_small_area(EDGEPT *point1, EDGEPT *point2);
|
|
|
|
EDGEPT *pick_close_point(EDGEPT *critical_point,
|
|
EDGEPT *vertical_point,
|
|
int *best_dist);
|
|
|
|
void prioritize_points(TESSLINE *outline, POINT_GROUP points);
|
|
|
|
void new_min_point(EDGEPT *local_min, POINT_GROUP points);
|
|
|
|
void new_max_point(EDGEPT *local_max, POINT_GROUP points);
|
|
|
|
void vertical_projection_point(EDGEPT *split_point, EDGEPT *target_point,
|
|
EDGEPT** best_point);
|
|
|
|
/*
|
|
#if defined(__STDC__) || defined(__cplusplus)
|
|
# define _ARGS(s) s
|
|
#else
|
|
# define _ARGS(s) ()
|
|
#endif*/
|
|
|
|
/* chop.c
|
|
PRIORITY point_priority
|
|
_ARGS((EDGEPT *point));
|
|
|
|
void add_point_to_list
|
|
_ARGS((POINT_GROUP point_list,
|
|
EDGEPT *point));
|
|
|
|
SEAM *create_split
|
|
_ARGS((BLOB *blob,
|
|
POINT_GROUP points));
|
|
|
|
SPLIT *extended_split
|
|
_ARGS((INT32 location,
|
|
EDGEPT *starting_point));
|
|
|
|
SEAM *get_best_pair
|
|
_ARGS((SPLIT_GROUP split_queue,
|
|
BLOB *blob));
|
|
|
|
void init_chop
|
|
_ARGS((void));
|
|
|
|
EDGEPT *pick_close_point
|
|
_ARGS((EDGEPT *critical_point,
|
|
EDGEPT *vertical_point,
|
|
int *best_dist));
|
|
|
|
void prioritize_points
|
|
_ARGS((TESSLINE *outline,
|
|
POINT_GROUP points));
|
|
|
|
void new_min_point
|
|
_ARGS((EDGEPT *local_min,
|
|
POINT_GROUP points));
|
|
|
|
void new_max_point
|
|
_ARGS((EDGEPT *local_max,
|
|
POINT_GROUP points));
|
|
|
|
EDGEPT *vertical_projection_point
|
|
_ARGS((EDGEPT *split_point,
|
|
EDGEPT *target_point));
|
|
|
|
#undef _ARGS
|
|
*/
|
|
#endif
|