mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-11 23:19:04 +08:00
9689f3f828
git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@948 d0cd1f9f-072b-0410-8dd7-cf729c803f20
69 lines
2.8 KiB
C++
69 lines
2.8 KiB
C++
/**********************************************************************
|
|
* File: scanedg.h (Formerly scanedge.h)
|
|
* Description: Raster scanning crack based edge extractor.
|
|
* Author: Ray Smith
|
|
* Created: Fri Mar 22 16:11:50 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 SCANEDG_H
|
|
#define SCANEDG_H
|
|
|
|
#include "params.h"
|
|
#include "scrollview.h"
|
|
#include "pdblock.h"
|
|
#include "crakedge.h"
|
|
|
|
class C_OUTLINE_IT;
|
|
|
|
struct CrackPos {
|
|
CRACKEDGE** free_cracks; // Freelist for fast allocation.
|
|
int x; // Position of new edge.
|
|
int y;
|
|
};
|
|
|
|
struct Pix;
|
|
|
|
void block_edges(Pix *t_image, // thresholded image
|
|
PDBLK *block, // block in image
|
|
C_OUTLINE_IT* outline_it);
|
|
void make_margins(PDBLK *block, // block in image
|
|
BLOCK_LINE_IT *line_it, // for old style
|
|
uinT8 *pixels, // pixels to strip
|
|
uinT8 margin, // white-out pixel
|
|
inT16 left, // block edges
|
|
inT16 right,
|
|
inT16 y); // line coord );
|
|
void line_edges(inT16 x, // coord of line start
|
|
inT16 y, // coord of line
|
|
inT16 xext, // width of line
|
|
uinT8 uppercolour, // start of prev line
|
|
uinT8 * bwpos, // thresholded line
|
|
CRACKEDGE ** prevline, // edges in progress
|
|
CRACKEDGE **free_cracks,
|
|
C_OUTLINE_IT* outline_it);
|
|
CRACKEDGE *h_edge(int sign, // sign of edge
|
|
CRACKEDGE * join, // edge to join to
|
|
CrackPos* pos);
|
|
CRACKEDGE *v_edge(int sign, // sign of edge
|
|
CRACKEDGE * join, // edge to join to
|
|
CrackPos* pos);
|
|
void join_edges(CRACKEDGE *edge1, // edges to join
|
|
CRACKEDGE *edge2, // no specific order
|
|
CRACKEDGE **free_cracks,
|
|
C_OUTLINE_IT* outline_it);
|
|
void free_crackedges(CRACKEDGE *start);
|
|
|
|
#endif
|