| /********************************************************************** |
| * File: charcut.h (Formerly charclip.h) |
| * Description: Code for character clipping |
| * Author: Phil Cheatle |
| * Created: Wed Nov 11 08:35:15 GMT 1992 |
| * |
| * (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 CHARCUT_H |
| #define CHARCUT_H |
| |
| #include "pgedit.h" |
| #include "notdll.h" |
| #include "notdll.h" |
| class ScrollView; |
| |
| /************************************************************************* |
| * CLASS PIXROW |
| * |
| * This class describes the pixels occupied by a blob. It uses two arrays, (min |
| * and max), each with one element per row, to identify the min and max x |
| * coordinates of the black pixels in the character on that row of the image. |
| * The number of rows used to describe the blob is held in row_count - note that |
| * some rows may be unoccupied - signified by max < min. The page coordinate of |
| * the row defined by min[0] and max[0] is held in row_offset. |
| *************************************************************************/ |
| |
| class PIXROW:public ELIST_LINK |
| { |
| public: |
| inT16 row_offset; //y coord of min[0] |
| inT16 row_count; //length of arrays |
| inT16 *min; //array of min x |
| inT16 *max; //array of max x |
| |
| PIXROW() { //empty constructor |
| row_offset = 0; |
| row_count = 0; |
| min = NULL; |
| max = NULL; |
| } |
| PIXROW( //specified size |
| inT16 pos, |
| inT16 count, |
| PBLOB *blob); |
| |
| ~PIXROW () { //destructor |
| if (min != NULL) |
| free_mem(min); |
| if (max != NULL) |
| free_mem(max); |
| max = NULL; |
| } |
| |
| void plot( //use current settings |
| ScrollView* fd) const; //where to paint |
| |
| TBOX bounding_box() const; //return bounding box |
| //return true if box exceeds image |
| bool bad_box(int xsize, int ysize) const; |
| |
| void contract( //force end on black |
| IMAGELINE *imlines, //image array |
| inT16 x_offset, //of pixels[0] |
| inT16 foreground_colour); //0 or 1 |
| |
| //image array |
| BOOL8 extend(IMAGELINE *imlines, |
| TBOX &imbox, |
| PIXROW *prev, //for prev blob |
| PIXROW *next, //for next blob |
| inT16 foreground_colour); //0 or 1 |
| |
| //box of imlines extnt |
| void char_clip_image(IMAGELINE *imlines, |
| TBOX &im_box, |
| ROW *row, //row containing word |
| IMAGE &clip_image, //unscaled char image |
| float &baseline_pos); //baseline ht in image |
| |
| }; |
| |
| ELISTIZEH (PIXROW) |
| extern INT_VAR_H (pix_word_margin, 3, "How far outside word BB to grow"); |
| extern BOOL_VAR_H (show_char_clipping, TRUE, "Show clip image window?"); |
| extern INT_VAR_H (net_image_width, 40, "NN input image width"); |
| extern INT_VAR_H (net_image_height, 36, "NN input image height"); |
| extern INT_VAR_H (net_image_x_height, 22, "NN input image x_height"); |
| void char_clip_word( // |
| WERD *word, //word to be processed |
| IMAGE &bin_image, //whole image |
| PIXROW_LIST *&pixrow_list, //pixrows built |
| IMAGELINE *&imlines, //lines cut from image |
| TBOX &pix_box //box defining imlines |
| ); |
| IMAGELINE *generate_imlines( //get some imagelines |
| IMAGE &bin_image, //from here |
| TBOX &pix_box); |
| //word to be processed |
| ScrollView* display_clip_image(WERD *word, |
| IMAGE &bin_image, //whole image |
| PIXROW_LIST *pixrow_list, //pixrows built |
| TBOX &pix_box //box of subimage |
| ); |
| void display_images(IMAGE &clip_image, IMAGE &scaled_image); |
| void plot_pixrows( //plot for all blobs |
| PIXROW_LIST *pixrow_list, |
| ScrollView* win); |
| #endif |