tesseract  v4.0.0-17-g361f3264
Open Source OCR Engine
ccstruct.h
1 // File: ccstruct.h
3 // Description: ccstruct class.
4 // Author: Samuel Charron
5 //
6 // (C) Copyright 2006, Google Inc.
7 // Licensed under the Apache License, Version 2.0 (the "License");
8 // you may not use this file except in compliance with the License.
9 // You may obtain a copy of the License at
10 // http://www.apache.org/licenses/LICENSE-2.0
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16 //
18 
19 #ifndef TESSERACT_CCSTRUCT_CCSTRUCT_H_
20 #define TESSERACT_CCSTRUCT_CCSTRUCT_H_
21 
22 #include "cutil_class.h" // for CUtil
23 
24 namespace tesseract {
25 class CCStruct : public CUtil {
26  public:
27  CCStruct() = default;
28  virtual ~CCStruct();
29 
30  // Globally accessible constants.
31  // APPROXIMATIONS of the fractions of the character cell taken by
32  // the descenders, ascenders, and x-height.
33  static const double kDescenderFraction; // = 0.25;
34  static const double kXHeightFraction; // = 0.5;
35  static const double kAscenderFraction; // = 0.25;
36  // Derived value giving the x-height as a fraction of cap-height.
37  static const double kXHeightCapRatio; // = XHeight/(XHeight + Ascender).
38 };
39 } // namespace tesseract
40 
41 #endif // TESSERACT_CCSTRUCT_CCSTRUCT_H_
static const double kXHeightFraction
Definition: ccstruct.h:34
static const double kDescenderFraction
Definition: ccstruct.h:33
Definition: baseapi.cpp:94
Definition: ccstruct.h:25
Definition: cutil_class.h:27
static const double kAscenderFraction
Definition: ccstruct.h:35
static const double kXHeightCapRatio
Definition: ccstruct.h:37