tesseract 4.1.1
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intfx.h
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1/******************************************************************************
2 ** Filename: intfx.h
3 ** Purpose: Interface to high level integer feature extractor.
4 ** Author: Robert Moss
5 ** History: Tue May 21 15:51:57 MDT 1991, RWM, Created.
6 **
7 ** (c) Copyright Hewlett-Packard Company, 1988.
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#ifndef INTFX_H
19#define INTFX_H
20
24#include "blobs.h"
25#include "intproto.h"
26#include "normalis.h"
27#include <cmath>
28
29class DENORM;
30
31namespace tesseract {
32class TrainingSample;
33}
34
36 int32_t Length; // total length of all outlines
37 int16_t Xmean, Ymean; // center of mass of all outlines
38 int16_t Rx, Ry; // radius of gyration
39 int16_t NumBL, NumCN; // number of features extracted
40 int16_t Width; // Width of blob in BLN coords.
41 uint8_t YBottom; // Bottom of blob in BLN coords.
42 uint8_t YTop; // Top of blob in BLN coords.
43};
44
45// The standard feature length
46const double kStandardFeatureLength = 64.0 / 5;
47
51void InitIntegerFX();
52
53// Returns a vector representing the direction of a feature with the given
54// theta direction in an INT_FEATURE_STRUCT.
55FCOORD FeatureDirection(uint8_t theta);
56
57namespace tesseract {
58 // Generates a TrainingSample from a TBLOB. Extracts features and sets
59 // the bounding box, so classifiers that operate on the image can work.
60 // TODO(rays) BlobToTrainingSample must remain a global function until
61 // the FlexFx and FeatureDescription code can be removed and LearnBlob
62 // made a member of Classify.
63 TrainingSample* BlobToTrainingSample(
64 const TBLOB& blob, bool nonlinear_norm, INT_FX_RESULT_STRUCT* fx_info,
66}
67
68#endif
void InitIntegerFX()
Definition: intfx.cpp:49
const double kStandardFeatureLength
Definition: intfx.h:46
FCOORD FeatureDirection(uint8_t theta)
Definition: intfx.cpp:66
TrainingSample * BlobToTrainingSample(const TBLOB &blob, bool nonlinear_norm, INT_FX_RESULT_STRUCT *fx_info, GenericVector< INT_FEATURE_STRUCT > *bl_features)
Definition: intfx.cpp:77
Definition: blobs.h:284
Definition: points.h:189
int16_t Width
Definition: intfx.h:40
uint8_t YBottom
Definition: intfx.h:41
int16_t Ymean
Definition: intfx.h:37
int16_t Xmean
Definition: intfx.h:37
uint8_t YTop
Definition: intfx.h:42
int16_t NumBL
Definition: intfx.h:39
int32_t Length
Definition: intfx.h:36
int16_t NumCN
Definition: intfx.h:39