vott导出标注文件python代码

import json
import cv2
import os
from bounding_box import bounding_box as bbox_plot

Img_Dir = 'F:/vott/target/vott-json-export'
Save_Dir = 'F:/vott/result'
Draw_Tags = ['person']


def make_video(img_dir, img_size=(1920, 1080), fps=5):
    file_path = os.path.join(Save_Dir, "demo.mp4")
    filelist = os.listdir(img_dir)
    fourcc = cv2.VideoWriter_fourcc('D', 'I', 'V', 'X')
    video = cv2.VideoWriter(file_path, fourcc, fps, img_size)

    for item in filelist:
        if item.endswith('.jpg'):
            item = img_dir + '/' + item
            img = cv2.imread(item)
            video.write(img)
    video.release()


def draw_one_img(img_name, img_timestamp, labels_list):

    img_path = os.path.join(Img_Dir, img_name)
    img = cv2.imread(img_path, cv2.IMREAD_COLOR)
    for label in labels_list:
        tag = label['tags'][0]
        if not tag in Draw_Tags:
            continue
        bbox = label['boundingBox']
        left = bbox['left']
        top = bbox['top']
        right = left + bbox['width']
        bottom = top + bbox['height']
        bbox_plot.add(img, left, top, right, bottom, tag, 'red')
    save_name = 'time%s.jpg' % format(img_timestamp, '.2f').replace('.', '')
    save_path = os.path.join(Save_Dir, save_name)
    cv2.imwrite(save_path, img)
    print(save_name, 'ok~')


def main():
    lb_json = os.path.join(Img_Dir, 'video-export.json')
    with open(lb_json, 'r',encoding='utf-8') as f:
        labels_dict = json.load(f)

    assets = labels_dict['assets']
    size = None

    for k, v in assets.items():
        img_name = v['asset']['name']
        img_timestamp = v['asset']['timestamp']
        if size is None:
            w = v['asset']['size']['width']
            h = v['asset']['size']['height']
            size = (w, h)
        labels_list = v['regions']
        draw_one_img(img_name, img_timestamp, labels_list)

    make_video(Save_Dir, img_size=size)

if __name__ == '__main__':
    main()