Tesseract  3.02
tesseract-ocr/ccstruct/polyaprx.h
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00001 /**********************************************************************
00002  * File:        polyaprx.h  (Formerly polygon.h)
00003  * Description: Code for polygonal approximation from old edgeprog.
00004  * Author:              Ray Smith
00005  * Created:             Thu Nov 25 11:42:04 GMT 1993
00006  *
00007  * (C) Copyright 1993, 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           POLYAPRX_H
00021 #define           POLYAPRX_H
00022 
00023 #include          "blobs.h"
00024 #include          "coutln.h"
00025 
00026 // convert a chain-coded input to the old OUTLINE approximation
00027 TESSLINE* ApproximateOutline(C_OUTLINE *c_outline);
00028 EDGEPT *edgesteps_to_edgepts (   //convert outline
00029 C_OUTLINE * c_outline,           //input
00030 EDGEPT edgepts[]                 //output is array
00031 );
00032 void fix2(                //polygonal approx
00033           EDGEPT *start,  /*loop to approimate */
00034           int area);
00035 EDGEPT *poly2(                  //second poly
00036               EDGEPT *startpt,  /*start of loop */
00037               int area          /*area of blob box */
00038              );
00039 void cutline(                //recursive refine
00040              EDGEPT *first,  /*ends of line */
00041              EDGEPT *last,
00042              int area        /*area of object */
00043             );
00044 #endif