draw_box.py

import json
import glob
from pathlib import Path
import cv2
import numpy as np

def draw_box(pth_webp, pth_boxs):

    with open(pth_boxs, encoding='utf-8') as fp:
        boxs = json.load(fp)
        word_boxes = boxs['text_word_boxes']
        word_boxes = word_boxes[::-1] # 逆序
        text_word = boxs['text_word']
        text_word = text_word[::-1]
        rec_texts = boxs['rec_texts']
        rec_texts = rec_texts[::-1]
        fp.close()

    imgData = np.fromfile(pth_webp, dtype=np.uint8)
    img = cv2.imdecode(imgData, cv2.IMREAD_UNCHANGED)

    if len(img.shape) != 3:  # 转彩图
        img_color = cv2.cvtColor(img, cv2.COLOR_GRAY2BGR)
        img = cv2.cvtColor(img, cv2.COLOR_GRAY2BGR)  # DBNet 原版只能处理彩图，这里转一下
    else:
        img_color = img.copy()


    for arr_word, arr_box in zip( text_word, word_boxes):
        for word, box in zip(arr_word, arr_box):
            lu = [box[0], box[1]]
            rd = [box[2], box[3]]
            ld = [box[0], box[3]]
            ru = [box[2], box[1]]
            points = np.array([lu, ru, rd, ld])

            cv2.polylines(img_color, [points], isClosed=True, color=(  # 多边形，框得比较全
                100, 0, 255), thickness=2)  # 只画线，不填充
            
            cv2.imshow("box", img_color)
            cv2.waitKey(0)

    path_jpg = pth_webp.replace(".png", ".jpg")
    cv2.imwrite(path_jpg, img_color)

def do_drawbox():

    pth_box = 'output/SWX0005_00000_00001_res.json'
    pth_webp = 'output/SWX0005_00000_00001_input_img.png'
    draw_box(pth_webp, pth_box)

if __name__ == "__main__":
    do_drawbox()