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comparison mupdf-source/thirdparty/tesseract/src/wordrec/gradechop.cpp @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /******************************************************************************
2 *
3 * File: gradechop.cpp (Formerly gradechop.c)
4 * Description:
5 * Author: Mark Seaman, OCR Technology
6 *
7 * (c) Copyright 1987, Hewlett-Packard Company.
8 ** Licensed under the Apache License, Version 2.0 (the "License");
9 ** you may not use this file except in compliance with the License.
10 ** You may obtain a copy of the License at
11 ** http://www.apache.org/licenses/LICENSE-2.0
12 ** Unless required by applicable law or agreed to in writing, software
13 ** distributed under the License is distributed on an "AS IS" BASIS,
14 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 ** See the License for the specific language governing permissions and
16 ** limitations under the License.
17 *
18 *****************************************************************************/
19 /*----------------------------------------------------------------------
20 I n c l u d e s
21 ----------------------------------------------------------------------*/
22
23 #include <algorithm>
24 #include <cmath>
25 #include "chop.h"
26 #include "wordrec.h"
27
28 /*----------------------------------------------------------------------
29 M a c r o s
30 ----------------------------------------------------------------------*/
31
32 namespace tesseract {
33
34 /*----------------------------------------------------------------------
35 F u n c t i o n s
36 ----------------------------------------------------------------------*/
37
38 /**********************************************************************
39 * grade_split_length
40 *
41 * Return a grade for the length of this split.
42 * 0 = "perfect"
43 * 100 = "no way jay"
44 **********************************************************************/
45 PRIORITY Wordrec::grade_split_length(SPLIT *split) {
46 PRIORITY grade;
47 float split_length;
48
49 split_length = split->point1->WeightedDistance(*split->point2, chop_x_y_weight);
50
51 if (split_length <= 0) {
52 grade = 0;
53 } else {
54 grade = std::sqrt(split_length) * chop_split_dist_knob;
55 }
56
57 return (std::max(0.0f, grade));
58 }
59
60 /**********************************************************************
61 * grade_sharpness
62 *
63 * Return a grade for the sharpness of this split.
64 * 0 = "perfect"
65 * 100 = "no way jay"
66 **********************************************************************/
67 PRIORITY Wordrec::grade_sharpness(SPLIT *split) {
68 PRIORITY grade;
69
70 grade = point_priority(split->point1) + point_priority(split->point2);
71
72 if (grade < -360.0) {
73 grade = 0;
74 } else {
75 grade += 360.0;
76 }
77
78 grade *= chop_sharpness_knob; /* Values 0 to -360 */
79
80 return (grade);
81 }
82
83 } // namespace tesseract