共计 889 个字符,预计需要花费 3 分钟才能阅读完成。
json 中的样子:
{
"version": "4.5.7",
"flags": {},
"shapes": [
{
"label": "wood",
"points": [
[
739.3162393162394,
482.0512820512821
]
],
"group_id": null,
"shape_type": "point",
"flags": {}},
{
"label": "wood",
"points": [
[
758.1196581196582,
458.11965811965814
]
],
"group_id": null,
"shape_type": "point",
"flags": {}},
],
"imagePath": "..\\img\\141.jpg",
"imageData":
"
.......
图片的 base64 编码,十分长
........
","imageHeight": 1080,"imageWidth": 1920
}
重要的信息就是外面的 points 坐标,其余的都用不到。提取办法如下:
import json
import numpy as np
import scipy.io as sio
import scipy.io as sio
import matplotlib.pyplot as plt
import shutil
import os
path = 'D:/test/wood/yi'
files = os.listdir(path)
for name in files:
if name.endswith('.json'):
print(name)
fp = open(os.path.join(path, name), 'r')
json_data = json.load(fp)
points_data = json_data['shapes']
points = []
for point in points_data:
points.append(point['points'][0])
sio.savemat(os.path.join('./mat', name.replace('.json','.mat')), {'annPoints':points, 'num':len(points)})
正文完