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import numpy as np |
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import cv2 |
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import os |
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import json |
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from functools import cmp_to_key |
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def resize_box(box, ori_img_shape, nomarlized_img_shape=(1000, 1000, 3)): |
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""" |
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box: [x0, y0, x1, y1], |
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ori_img_shape: 形如(1560, 1103, 3) |
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""" |
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height_ratio = nomarlized_img_shape[0] / ori_img_shape[0] |
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width_ratio = nomarlized_img_shape[1] / ori_img_shape[1] |
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x0, y0, x1, y1 = box |
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norm_x0, norm_x1 = round(x0 * width_ratio), round(x1 * width_ratio) |
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norm_y0, norm_y1 = round(y0 * height_ratio), round(y1 * height_ratio) |
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return [norm_x0, norm_y0, norm_x1, norm_y1] |
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def tblr_reading_order_detector(tuple_list): |
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"""rule: top-to-bottom, left-to-right |
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tuple: (word_text, word_bbox, normed_word_bbox) |
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return: sorted_tuple_list |
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""" |
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def sort_cmp_fn(word_box1, word_box2): |
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""" |
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sorted function的排序的2个元素的比较准则。 |
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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。 |
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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)。 |
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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. |
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""" |
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x0, y0, x1, y1 = word_box1[1] |
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x0_, y0_, x1_, y1_ = word_box2[1] |
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if y0 < y0_: |
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return -1 |
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elif y0 > y0_: |
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return 1 |
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elif y0 == y0_: |
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if x0 <= x0_: |
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return -1 |
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elif x0 > x0_: |
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return 1 |
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sorted_tuple_list = sorted(tuple_list, key=cmp_to_key(sort_cmp_fn)) |
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return sorted_tuple_list |
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