underlin.h

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/**********************************************************************
 * File:        underlin.h  (Formerly undrline.h)
 * Description: Code to chop blobs apart from underlines.
 * Author:      Ray Smith
 *
 * (C) Copyright 1994, 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 UNDERLIN_H
#define UNDERLIN_H
 
#include "fpchop.h"
 
namespace tesseract {
 
extern double_VAR_H(textord_underline_offset);
extern BOOL_VAR_H(textord_restore_underlines);
void restore_underlined_blobs( // get chop points
    TO_BLOCK *block            // block to do
);
TO_ROW *most_overlapping_row( // find best row
    TO_ROW_LIST *rows,        // list of rows
    BLOBNBOX *blob            // blob to place
);
void find_underlined_blobs(    // get chop points
    BLOBNBOX *u_line,          // underlined unit
    QSPLINE *baseline,         // actual baseline
    float xheight,             // height of line
    float baseline_offset,     // amount to shrinke it
    ICOORDELT_LIST *chop_cells // places to chop
);
void vertical_cunderline_projection( // project outlines
    C_OUTLINE *outline,              // outline to project
    QSPLINE *baseline,               // actual baseline
    float xheight,                   // height of line
    float baseline_offset,           // amount to shrinke it
    STATS *lower_proj,               // below baseline
    STATS *middle_proj,              // centre region
    STATS *upper_proj                // top region
);
 
} // namespace tesseract
 
#endif