Tesseract  3.02
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edgloop.h
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1 /**********************************************************************
2  * File: edgloop.h (Formerly edgeloop.h)
3  * Description: Functions to clean up an outline before approximation.
4  * Author: Ray Smith
5  * Created: Tue Mar 26 16:56:25 GMT 1991
6  *
7  * (C) Copyright 1991, Hewlett-Packard Ltd.
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 #ifndef EDGLOOP_H
21 #define EDGLOOP_H
22 
23 #include "scrollview.h"
24 #include "params.h"
25 #include "img.h"
26 #include "pdblock.h"
27 #include "coutln.h"
28 #include "crakedge.h"
29 
30 #define BUCKETSIZE 16
31 
32 
33 extern double_VAR_H (edges_threshold_greyfraction, 0.07,
34 "Min edge diff for grad vector");
35 extern BOOL_VAR_H (edges_show_paths, FALSE, "Draw raw outlines");
36 extern BOOL_VAR_H (edges_show_needles, FALSE, "Draw edge needles");
38 "Importance ratio for chucking outlines");
40 "Max holes allowed in blob");
41 extern INT_VAR_H (edges_maxedgelength, 16000, "Max steps in any outline");
42 extern double_VAR_H (edges_childarea, 0.5,
43 "Max area fraction of child outline");
44 extern double_VAR_H (edges_boxarea, 0.8,
45 "Min area fraction of grandchild for box");
46 void complete_edge(CRACKEDGE *start, //start of loop
47  C_OUTLINE_IT* outline_it);
48 ScrollView::Color check_path_legal( //certify outline
49  CRACKEDGE *start //start of loop
50  );
51 inT16 loop_bounding_box( //get bounding box
52  CRACKEDGE *&start, //edge loop
53  ICOORD &botleft, //bounding box
54  ICOORD &topright);
55 #endif