tesseract/wordrec/gradechop.cpp
Ray Smith 25d0968d09 Major refactor to improve speed on difficut images, especially when running
a heap checker.
SEAM and SPLIT have been begging for a refactor for a *LONG* time.
This change does most of the work of turning them into proper classes:
  Moved relevant code into SEAM/SPLIT/TBLOB/EDGEPT etc from global helper functions.
  Made the splits full data members of SEAM in an array instead of 3 separate pointers.
    This greatly reduces the amount of new/delete happening in the chopper, which is the main goal.
  Deleted redundant files: olutil.*,  makechop.*
  Brought other code into SEAM in order to keep its data members private with only priority having accessors.
2015-05-12 14:59:14 -07:00

91 lines
2.9 KiB
C++

/* -*-C-*-
********************************************************************************
*
* File: gradechop.c (Formerly gradechop.c)
* Description:
* Author: Mark Seaman, OCR Technology
* Created: Fri Oct 16 14:37:00 1987
* Modified: Tue Jul 30 16:06:27 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.
*
*********************************************************************************/
/*----------------------------------------------------------------------
I n c l u d e s
----------------------------------------------------------------------*/
#include "gradechop.h"
#include "wordrec.h"
#include "chop.h"
#include "ndminx.h"
#include <math.h>
/*----------------------------------------------------------------------
M a c r o s
----------------------------------------------------------------------*/
namespace tesseract {
/*----------------------------------------------------------------------
F u n c t i o n s
----------------------------------------------------------------------*/
/**********************************************************************
* grade_split_length
*
* Return a grade for the length of this split.
* 0 = "perfect"
* 100 = "no way jay"
**********************************************************************/
PRIORITY Wordrec::grade_split_length(register SPLIT *split) {
register PRIORITY grade;
register float split_length;
split_length =
split->point1->WeightedDistance(*split->point2, chop_x_y_weight);
if (split_length <= 0)
grade = 0;
else
grade = sqrt (split_length) * chop_split_dist_knob;
return (MAX (0.0, grade));
}
/**********************************************************************
* grade_sharpness
*
* Return a grade for the sharpness of this split.
* 0 = "perfect"
* 100 = "no way jay"
**********************************************************************/
PRIORITY Wordrec::grade_sharpness(register SPLIT *split) {
register PRIORITY grade;
grade = point_priority (split->point1) + point_priority (split->point2);
if (grade < -360.0)
grade = 0;
else
grade += 360.0;
grade *= chop_sharpness_knob; /* Values 0 to -360 */
return (grade);
}
} // namespace tesseract