/usr/include/tesseract/chopper.h is in libtesseract-dev 3.02.01-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | /* -*-C-*-
 ********************************************************************************
 *
 * File:        chopper.h  (Formerly chopper.h)
 * Description:
 * Author:       Mark Seaman, SW Productivity
 * Created:      Fri Oct 16 14:37:00 1987
 * Modified:     Wed May 15 14:24:26 1991 (Mark Seaman) marks@hpgrlt
 * Language:     C
 * Package:      N/A
 * Status:       Reusable Software Component
 *
 * (c) Copyright 1987, Hewlett-Packard Company.
 ** 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 CHOPPER_H
#define CHOPPER_H
#include "cutil.h"
#include "matrix.h"
#include "seam.h"
#include "states.h"
#include "stopper.h"
void preserve_outline(EDGEPT *start);
void preserve_outline_tree(TESSLINE *srcline);
EDGEPT *restore_outline(EDGEPT *start);
void restore_outline_tree(TESSLINE *srcline);
int any_shared_split_points(SEAMS seam_list, SEAM *seam);
int check_blob(TBLOB *blob);
inT16 check_seam_order(TBLOB *blob, SEAM *seam);
inT16 total_containment(TBLOB *blob1, TBLOB *blob2);
#endif
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