| import numpy as np |
| import cv2 |
| import os |
| import json |
| from functools import cmp_to_key |
|
|
| def resize_box(box, ori_img_shape, nomarlized_img_shape=(1000, 1000, 3)): |
| """ |
| box: [x0, y0, x1, y1], |
| ori_img_shape: 形如(1560, 1103, 3) |
| """ |
|
|
| height_ratio = nomarlized_img_shape[0] / ori_img_shape[0] |
| width_ratio = nomarlized_img_shape[1] / ori_img_shape[1] |
|
|
| x0, y0, x1, y1 = box |
| norm_x0, norm_x1 = round(x0 * width_ratio), round(x1 * width_ratio) |
| norm_y0, norm_y1 = round(y0 * height_ratio), round(y1 * height_ratio) |
|
|
| return [norm_x0, norm_y0, norm_x1, norm_y1] |
|
|
| def tblr_reading_order_detector(tuple_list): |
| """rule: top-to-bottom, left-to-right |
| |
| tuple: (word_text, word_bbox, normed_word_bbox) |
| |
| return: sorted_tuple_list |
| """ |
|
|
| def sort_cmp_fn(word_box1, word_box2): |
| """ |
| sorted function的排序的2个元素的比较准则。 |
| 1. 比较box1和box2的y坐标,如果二者的高重合度达到了二者的50%,则位于同一行,否则位于不同行。 |
| 2. 如果位于同一行,那么比较二者的x0,如果box1_x0 < box2_x0,则返回-1,表示box_1<box_2,否则返回0(表示相等)或者1(box1>box2)。 |
| 3. 如果不位于同一行,那么比较二者的y0,如果box1_y0 < box2_y0,则返回-1,否则返回0或者1. |
| """ |
|
|
| x0, y0, x1, y1 = word_box1[1] |
| x0_, y0_, x1_, y1_ = word_box2[1] |
|
|
| |
| if y0 < y0_: |
| return -1 |
| elif y0 > y0_: |
| return 1 |
| elif y0 == y0_: |
| if x0 <= x0_: |
| return -1 |
| elif x0 > x0_: |
| return 1 |
|
|
| sorted_tuple_list = sorted(tuple_list, key=cmp_to_key(sort_cmp_fn)) |
| |
|
|
| return sorted_tuple_list |
|
|
|
|