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  • Committer: Thilanka
  • Date: 2010-07-14 07:34:15 UTC
  • Revision ID: thilanka@thilanka-laptop-20100714073415-1etpm1i0xtbrldus
This commit contains all the working source for sahana OCR till midterm evaluation

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