| /********************************************************************** |
| * File: edgloop.h (Formerly edgeloop.h) |
| * Description: Functions to clean up an outline before approximation. |
| * Author: Ray Smith |
| * Created: Tue Mar 26 16:56:25 GMT 1991 |
| * |
| * (C) Copyright 1991, Hewlett-Packard Ltd. |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| * |
| **********************************************************************/ |
| |
| #ifndef EDGLOOP_H |
| #define EDGLOOP_H |
| |
| #include "scrollview.h" |
| #include "varable.h" |
| #include "img.h" |
| #include "pdblock.h" |
| #include "coutln.h" |
| #include "crakedge.h" |
| |
| #define BUCKETSIZE 16 |
| |
| |
| extern double_VAR_H (edges_threshold_greyfraction, 0.07, |
| "Min edge diff for grad vector"); |
| extern BOOL_VAR_H (edges_show_paths, FALSE, "Draw raw outlines"); |
| extern BOOL_VAR_H (edges_show_needles, FALSE, "Draw edge needles"); |
| extern INT_VAR_H (edges_children_per_grandchild, 10, |
| "Importance ratio for chucking outlines"); |
| extern INT_VAR_H (edges_children_count_limit, 45, |
| "Max holes allowed in blob"); |
| extern INT_VAR_H (edges_maxedgelength, 16000, "Max steps in any outline"); |
| extern double_VAR_H (edges_childarea, 0.5, |
| "Max area fraction of child outline"); |
| extern double_VAR_H (edges_boxarea, 0.8, |
| "Min area fraction of grandchild for box"); |
| DLLSYM void get_outlines( //edge detect |
| #ifndef GRAPHICS_DISABLED |
| ScrollView* window, //window for output |
| #endif |
| IMAGE *image, //image to scan |
| IMAGE *t_image, //thresholded image |
| ICOORD page_tr, //corner of page |
| PDBLK *block, //block to scan |
| C_OUTLINE_IT *out_it //output iterator |
| ); |
| void complete_edge( //clean and approximate |
| CRACKEDGE *start //start of loop |
| ); |
| ScrollView::Color check_path_legal( //certify outline |
| CRACKEDGE *start //start of loop |
| ); |
| inT16 loop_bounding_box( //get bounding box |
| CRACKEDGE *&start, //edge loop |
| ICOORD &botleft, //bounding box |
| ICOORD &topright); |
| #endif |