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plate_number.py
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plate_number.py
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"""
generate plate numbers
"""
import numpy as np
import cv2, os
from glob import glob
# 省份
provinces = ["京", "津", "冀", "晋", "蒙", "辽", "吉", "黑", "沪",
"苏", "浙", "皖", "闽", "赣", "鲁", "豫", "鄂", "湘",
"粤", "桂", "琼", "渝", "川", "贵", "云", "藏", "陕",
"甘", "青", "宁", "新"]
# "港", "澳", "使", "领", "学", "警", "挂"]
digits = ['{}'.format(x + 1) for x in range(9)] + ['0']
# 英文,没有I、O两个字符
letters = [chr(x + ord('A')) for x in range(26) if not chr(x + ord('A')) in ['I', 'O']]
# print('letters', digits + letters)
# 随机选取
def random_select(data):
return data[np.random.randint(len(data))]
# 蓝牌
def generate_plate_number_blue(length=7):
plate = random_select(provinces)
for i in range(length - 1):
plate += random_select(digits + letters)
return plate
# 黄色挂车
def generate_plate_number_yellow_gua():
plate = generate_plate_number_blue()
return plate[:6] + '挂'
# 教练车
def generate_plate_number_yellow_xue():
plate = generate_plate_number_blue()
return plate[:6] + '学'
# 白色警车、军车
def generate_plate_number_white():
plate = generate_plate_number_blue()
if np.random.random(1) > 0.5:
return plate[:6] + '警'
else:
first_letter = random_select(letters)
return first_letter + plate[1:]
def generate_plate_number_black_gangao():
plate = generate_plate_number_blue()
return '粤' + plate[1:6] + random_select(["港", "澳"])
def generate_plate_number_black_ling():
plate = generate_plate_number_blue()
return plate[:6] + '领'
def generate_plate_number_black_shi():
plate = generate_plate_number_blue()
return '使' + plate[1:]
def board_bbox(polys):
x1, y1 = np.min(polys, axis=0)
x2, y2 = np.max(polys, axis=0)
return [x1, y1, x2, y2]
if __name__ == '__main__':
pass