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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)
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 box in boxs:
charPoly = box["charPoly"]
lu = [charPoly["x0"], charPoly["y0"]]
ru = [charPoly["x1"], charPoly["y1"]]
rd = [charPoly["x2"], charPoly["y2"]]
ld = [charPoly["x3"], charPoly["y3"]]
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(".webp", ".jpg")
cv2.imwrite(path_jpg, img_color)
def do_drawbox():
webps = glob.glob('./out2/*.webp', recursive=False)
for pth_webp in webps:
pth_box = pth_webp.replace(".webp", ".boxs")
draw_box(pth_webp, pth_box)
if __name__ == "__main__":
do_drawbox()
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