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101 lines
3.8 KiB
C
101 lines
3.8 KiB
C
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/**********************************************************************
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* File: edgblob.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 EDGBLOB_H
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#define EDGBLOB_H
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#include "grphics.h"
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#include "varable.h"
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#include "img.h"
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#include "ocrblock.h"
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#include "coutln.h"
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#include "crakedge.h"
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#include "notdll.h"
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#define BUCKETSIZE 16
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class OL_BUCKETS
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{
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public:
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OL_BUCKETS( //constructor
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ICOORD bleft, //corners
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ICOORD tright);
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~OL_BUCKETS () { //cleanup
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delete[]buckets;
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}
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C_OUTLINE_LIST *operator () (//array access
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INT16 x, //image coords
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INT16 y);
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//first non-empty bucket
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C_OUTLINE_LIST *start_scan() {
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for (index = 0; buckets[index].empty () && index < bxdim * bydim - 1;
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index++);
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return &buckets[index];
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}
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//next non-empty bucket
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C_OUTLINE_LIST *scan_next() {
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for (; buckets[index].empty () && index < bxdim * bydim - 1; index++);
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return &buckets[index];
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}
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INT32 count_children( //recursive sum
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C_OUTLINE *outline, //parent outline
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INT32 max_count); //max output
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void extract_children( //single level get
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C_OUTLINE *outline, //parent outline
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C_OUTLINE_IT *it); //destination iterator
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private:
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C_OUTLINE_LIST * buckets; //array of buckets
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INT16 bxdim; //size of array
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INT16 bydim;
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ICOORD bl; //corners
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ICOORD tr;
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INT32 index; //for extraction scan
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};
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void extract_edges( //find blobs
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#ifndef GRAPHICS_DISABLED
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WINDOW 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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BLOCK *block //block to scan
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);
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void outlines_to_blobs( //find blobs
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BLOCK *block, //block to scan
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ICOORD bleft, //block box //outlines in block
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ICOORD tright,
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C_OUTLINE_LIST *outlines);
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void fill_buckets( //find blobs
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C_OUTLINE_LIST *outlines, //outlines in block
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OL_BUCKETS *buckets //output buckets
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);
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void empty_buckets( //find blobs
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BLOCK *block, //block to scan
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OL_BUCKETS *buckets //output buckets
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);
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BOOL8 capture_children( //find children
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OL_BUCKETS *buckets, //bucket sort clanss
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C_BLOB_IT *reject_it, //dead grandchildren
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C_OUTLINE_IT *blob_it //output outlines
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);
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#endif
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