tesseract-doc/edgloop_8h_source.html

00001 /**********************************************************************
00002  * File:        edgloop.h  (Formerly edgeloop.h)
00003  * Description: Functions to clean up an outline before approximation.
00004  * Author:                                      Ray Smith
00005  * Created:                                     Tue Mar 26 16:56:25 GMT 1991
00006  *
00007  * (C) Copyright 1991, Hewlett-Packard Ltd.
00008  ** Licensed under the Apache License, Version 2.0 (the "License");
00009  ** you may not use this file except in compliance with the License.
00010  ** You may obtain a copy of the License at
00011  ** http://www.apache.org/licenses/LICENSE-2.0
00012  ** Unless required by applicable law or agreed to in writing, software
00013  ** distributed under the License is distributed on an "AS IS" BASIS,
00014  ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00015  ** See the License for the specific language governing permissions and
00016  ** limitations under the License.
00017  *
00018  **********************************************************************/
00019
00020 #ifndef           EDGLOOP_H
00021 #define           EDGLOOP_H
00022
00023 #include          "scrollview.h"
00024 #include          "params.h"
00025 #include          "img.h"
00026 #include          "pdblock.h"
00027 #include          "coutln.h"
00028 #include          "crakedge.h"
00029
00030 #define BUCKETSIZE      16
00031
00032
00033 extern double_VAR_H (edges_threshold_greyfraction, 0.07,
00034 "Min edge diff for grad vector");
00035 extern BOOL_VAR_H (edges_show_paths, FALSE, "Draw raw outlines");
00036 extern BOOL_VAR_H (edges_show_needles, FALSE, "Draw edge needles");
00037 extern INT_VAR_H (edges_children_per_grandchild, 10,
00038 "Importance ratio for chucking outlines");
00039 extern INT_VAR_H (edges_children_count_limit, 45,
00040 "Max holes allowed in blob");
00041 extern INT_VAR_H (edges_maxedgelength, 16000, "Max steps in any outline");
00042 extern double_VAR_H (edges_childarea, 0.5,
00043 "Max area fraction of child outline");
00044 extern double_VAR_H (edges_boxarea, 0.8,
00045 "Min area fraction of grandchild for box");
00046 void complete_edge(CRACKEDGE *start,  //start of loop
00047                    C_OUTLINE_IT* outline_it);
00048 ScrollView::Color check_path_legal(                  //certify outline
00049                         CRACKEDGE *start  //start of loop
00050                        );
00051 inT16 loop_bounding_box(                    //get bounding box
00052                         CRACKEDGE *&start,  //edge loop
00053                         ICOORD &botleft,    //bounding box
00054                         ICOORD &topright);
00055 #endif