官网：https://github.com/detectRecog/CCPD
其它介绍：https://blog.csdn.net/qianbin3200896/article/details/103009221
CCPD (Chinese City Parking Dataset, ECCV)
provinces = ["皖", "沪", "津", "渝", "冀", "晋", "蒙", "辽", "吉", "黑", "苏", "浙", "京", "闽", "赣", "鲁", "豫", "鄂", "湘", "粤", "桂", "琼", "川", "贵", "云", "藏", "陕", "甘", "青", "宁", "新", "警", "学", "O"]
alphabets = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W','X', 'Y', 'Z', 'O']
ads = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X','Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'O']官网github给的3个列表最后都有一个字母O，不是数字0，当作结尾符号，因为中国车牌没有大写字母O，其实也没有大写字母I
省份简称里的"警" 公安内部车， "学" 驾校的车，车牌号没有小写字母
图片名称例子
name = "025-95_113-154&383_386&473-386&473_177&454_154&383_363&402-0_0_22_27_27_33_16-37-15.jpg"print(len(name.split('-')))
print(name.split('-'))结果如下
7
['025', '95_113', '154&383_386&473', '386&473_177&454_154&383_363&402', '0_0_22_27_27_33_16', '37', '15.jpg']分割成了7段
- 154&383_386&473：车牌框的第1、第4个点
- 0_0_22_27_27_33_16：省份简称_字母_5个字母或数字组合
2020年绿牌数据
车牌号有8位
train数量
5769
['./CCPD2020/ccpd_green/train/0245182291667-88_93-221&481_490&573-489&561_221&573_223&485_490&481-0_0_3_25_29_31_31_31-132-139.jpg','./CCPD2020/ccpd_green/train/0161783854167-93_97-255&489_465&566-465&566_258&553_255&489_461&495-0_0_3_24_27_26_31_30-148-296.jpg','./CCPD2020/ccpd_green/train/0133203125-90_102-228&515_426&583-426&583_240&582_228&518_413&515-0_0_5_24_29_33_33_30-121-38.jpg']val数量
import globval_dir = './CCPD2020/ccpd_green/val'
val_imgPaths = glob.glob(val_dir+'/*.jpg')
print(len(val_imgPaths))
print(val_imgPaths[0])1001
./CCPD2020/ccpd_green/val/04189453125-105_107-165&464_435&620-435&620_172&540_165&464_433&532-0_0_3_25_29_29_30_30-95-92.jpgtest数量
import globtest_dir = './CCPD2020/ccpd_green/test'
test_imgPaths = glob.glob(test_dir+'/*.jpg')
print(len(test_imgPaths))
print(test_imgPaths[0])5006
./CCPD2020/ccpd_green/test/00954022988505747-90_263-190&522_356&574-356&574_195&571_190&522_351&523-0_0_3_29_32_26_26_26-151-54.jpg画框
用上面这张图为例
import osimgPath = 'CCPD2020/ccpd_green/val/02-84_90-245&479_437&584-437&551_245&584_245&503_429&479-0_0_3_24_33_26_33_26-103-32.jpg'print(os.path.splitext(imgPath))打印如下
('CCPD2020/ccpd_green/val/02-84_90-245&479_437&584-437&551_245&584_245&503_429&479-0_0_3_24_33_26_33_26-103-32', '.jpg')分割图片名称
import osimgPath = 'CCPD2020/ccpd_green/val/02-84_90-245&479_437&584-437&551_245&584_245&503_429&479-0_0_3_24_33_26_33_26-103-32.jpg'numName, _ = os.path.splitext(imgPath)
print(numName.split('-'))打印如下
['CCPD2020/ccpd_green/val/02', '84_90', '245&479_437&584', '437&551_245&584_245&503_429&479', '0_0_3_24_33_26_33_26', '103', '32']分割框的2个坐标
import osimgPath = 'CCPD2020/ccpd_green/val/02-84_90-245&479_437&584-437&551_245&584_245&503_429&479-0_0_3_24_33_26_33_26-103-32.jpg'numName, _ = os.path.splitext(imgPath)
x1_y1,x2_y2 = numName.split('-')[2].split('_')
print(x1_y1,x2_y2)
x1,y1 = x1_y1.split('&')
x2,y2 = x2_y2.split('&')
print(x1,y1,x2,y2)打印如下
245&479 437&584
245 479 437 584显示框
import os
import cv2imgPath = 'CCPD2020/ccpd_green/val/02-84_90-245&479_437&584-437&551_245&584_245&503_429&479-0_0_3_24_33_26_33_26-103-32.jpg'numName, _ = os.path.splitext(imgPath)
x1_y1,x2_y2 = numName.split('-')[2].split('_')
x1,y1 = x1_y1.split('&')
x2,y2 = x2_y2.split('&')img = cv2.imread(imgPath)
cv2.rectangle(img, (int(x1),int(y1)), (int(x2), int(y2)), (0, 0, 255), 2)
cv2.imshow('img',img)
cv2.waitKey(10000)
cv2.destroyAllWindows()
车牌号名称
import os
import cv2imgPath = 'CCPD2020/ccpd_green/val/02-84_90-245&479_437&584-437&551_245&584_245&503_429&479-0_0_3_24_33_26_33_26-103-32.jpg'numName, _ = os.path.splitext(imgPath)
print(numName.split('-')[4])
print(numName.split('-')[4].split('_'))打印如下
0_0_3_24_33_26_33_26
['0', '0', '3', '24', '33', '26', '33', '26']换成号码
import os
import cv2provinces = ["皖", "沪", "津", "渝", "冀", "晋", "蒙", "辽", "吉", "黑", "苏", "浙", "京", "闽", "赣", "鲁", "豫", "鄂", "湘", "粤", "桂", "琼", "川", "贵", "云", "藏", "陕", "甘", "青", "宁", "新", "警", "学", "O"]
alphabets = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W','X', 'Y', 'Z', 'O']
ads = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X','Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'O']imgPath = 'CCPD2020/ccpd_green/val/02-84_90-245&479_437&584-437&551_245&584_245&503_429&479-0_0_3_24_33_26_33_26-103-32.jpg'numName, _ = os.path.splitext(imgPath)
index = [int(i) for i in numName.split('-')[4].split('_')]
first_index = index[0]
second_index = index[1]
last5_index = index[2:]print(provinces[first_index],alphabets[second_index])
print([ads[i] for i in last5_index])打印如下
皖 A
['D', '0', '9', '2', '9', '2']
拼成号码
import os
import cv2provinces = ["皖", "沪", "津", "渝", "冀", "晋", "蒙", "辽", "吉", "黑", "苏", "浙", "京", "闽", "赣", "鲁", "豫", "鄂", "湘", "粤", "桂", "琼", "川", "贵", "云", "藏", "陕", "甘", "青", "宁", "新", "警", "学", "O"]
alphabets = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W','X', 'Y', 'Z', 'O']
ads = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X','Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'O']imgPath = 'CCPD2020/ccpd_green/val/02-84_90-245&479_437&584-437&551_245&584_245&503_429&479-0_0_3_24_33_26_33_26-103-32.jpg'numName, _ = os.path.splitext(imgPath)
index = [int(i) for i in numName.split('-')[4].split('_')]
first_index = index[0]
second_index = index[1]
last5_index = index[2:]s = ''
for i in [ads[i] for i in last5_index]:s += iprint(provinces[first_index]+alphabets[second_index]+s)打印如下
皖AD09292
裁剪车牌保存
import os
import cv2provinces = ["皖", "沪", "津", "渝", "冀", "晋", "蒙", "辽", "吉", "黑", "苏", "浙", "京", "闽", "赣", "鲁", "豫", "鄂", "湘", "粤", "桂", "琼", "川", "贵", "云", "藏", "陕", "甘", "青", "宁", "新", "警", "学", "O"]
alphabets = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W','X', 'Y', 'Z', 'O']
ads = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X','Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'O']imgPath = 'CCPD2020/ccpd_green/val/02-84_90-245&479_437&584-437&551_245&584_245&503_429&479-0_0_3_24_33_26_33_26-103-32.jpg'numName, _ = os.path.splitext(imgPath)
index = [int(i) for i in numName.split('-')[4].split('_')]
first_index = index[0]
second_index = index[1]
last5_index = index[2:]
s = ''
for i in [ads[i] for i in last5_index]: s += i
imgName = provinces[first_index]+alphabets[second_index]+s+'.jpg'x1_y1,x2_y2 = numName.split('-')[2].split('_')
x1,y1 = x1_y1.split('&')
x2,y2 = x2_y2.split('&')
img = cv2.imread(imgPath)
img_crop = img[int(y1):int(y2),int(x1):int(x2)]
cv2.imwrite(imgName,img_crop)
train/val/test的图片是否重名
import globtrain_dir = './CCPD2020/ccpd_green/train'
train_imgPaths = glob.glob(train_dir+'/*.jpg')val_dir = './CCPD2020/ccpd_green/val'
val_imgPaths = glob.glob(val_dir+'/*.jpg')test_dir = './CCPD2020/ccpd_green/test'
test_imgPaths = glob.glob(test_dir+'/*.jpg')print(len(train_imgPaths)+len(val_imgPaths)+len(test_imgPaths))merge = set()
merge.update(train_imgPaths,val_imgPaths,test_imgPaths)
print(len(merge))打印如下
11776
11776没有重名的图片
合并train/val/test文件夹
把train/val/test文件夹下的图片拷到green文件夹
11776同一车牌是否多次采集
import glob
import os
import cv2provinces = ["皖", "沪", "津", "渝", "冀", "晋", "蒙", "辽", "吉", "黑", "苏", "浙", "京", "闽", "赣", "鲁", "豫", "鄂", "湘", "粤", "桂", "琼", "川", "贵", "云", "藏", "陕", "甘", "青", "宁", "新", "警", "学", "O"]
alphabets = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W','X', 'Y', 'Z', 'O']
ads = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X','Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'O']def get_chepai(path):numName, _ = os.path.splitext(path)index = [int(i) for i in numName.split('-')[4].split('_')]first_index = index[0]second_index = index[1]last5_index = index[2:]s = ''for i in [ads[i] for i in last5_index]: s += ireturn provinces[first_index]+alphabets[second_index]+sgreen_dir = './CCPD2020/ccpd_green/green'
green_imgPaths = glob.glob(green_dir+'/*.jpg')
print('图片数量:',len(green_imgPaths))chepai = set()
for imgPath in green_imgPaths:chepai.add(get_chepai(imgPath))
print('车牌数量:', len(chepai))打印如下
图片数量: 11776
车牌数量: 3298同一车牌采集了多次
批量裁剪车牌
import glob
import os
import cv2provinces = ["皖", "沪", "津", "渝", "冀", "晋", "蒙", "辽", "吉", "黑", "苏", "浙", "京", "闽", "赣", "鲁", "豫", "鄂", "湘", "粤", "桂", "琼", "川", "贵", "云", "藏", "陕", "甘", "青", "宁", "新", "警", "学", "O"]
alphabets = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W','X', 'Y', 'Z', 'O']
ads = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X','Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'O']def get_chepai(path):numName, _ = os.path.splitext(path)index = [int(i) for i in numName.split('-')[4].split('_')]first_index = index[0]second_index = index[1]last5_index = index[2:]s = ''for i in [ads[i] for i in last5_index]: s += ireturn provinces[first_index]+alphabets[second_index]+sdef get_box(path):numName, _ = os.path.splitext(path)x1_y1,x2_y2 = numName.split('-')[2].split('_')x1,y1 = x1_y1.split('&')x2,y2 = x2_y2.split('&')return [int(x1),int(y1),int(x2),int(y2)]green_dir = './CCPD2020/ccpd_green/green'
green_imgPaths = glob.glob(green_dir+'/*.jpg')
print('图片数量:',len(green_imgPaths))name2num = dict()
for imgPath in green_imgPaths:chepai = get_chepai(imgPath)if chepai in name2num: name2num[chepai] += 1else: name2num[chepai] = 0crop_dir = './CCPD2020/ccpd_green/green_crop/'
for index,imgPath in enumerate(green_imgPaths):chepai = get_chepai(imgPath)img = cv2.imread(imgPath)x1,y1,x2,y2 = get_box(imgPath)img_crop = img[y1:y2,x1:x2]cv2.imwrite(crop_dir+'{}_{}.jpg'.format(chepai,name2num[chepai]),img_crop)name2num[chepai] -= 1if index % 2000==0: print(index)图片数量: 11776
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crop_imgPaths = glob.glob(crop_dir+'/*.jpg')
print('裁剪的车牌图片数量:',len(crop_imgPaths))裁剪的车牌图片数量: 11776
批量裁剪成94x24大小
import glob
import os
import cv2provinces = ["皖", "沪", "津", "渝", "冀", "晋", "蒙", "辽", "吉", "黑", "苏", "浙", "京", "闽", "赣", "鲁", "豫", "鄂", "湘", "粤", "桂", "琼", "川", "贵", "云", "藏", "陕", "甘", "青", "宁", "新", "警", "学", "O"]
alphabets = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W','X', 'Y', 'Z', 'O']
ads = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X','Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'O']def get_chepai(path):numName, _ = os.path.splitext(path)index = [int(i) for i in numName.split('-')[4].split('_')]first_index = index[0]second_index = index[1]last5_index = index[2:]s = ''for i in [ads[i] for i in last5_index]: s += ireturn provinces[first_index]+alphabets[second_index]+sdef get_box(path):numName, _ = os.path.splitext(path)x1_y1,x2_y2 = numName.split('-')[2].split('_')x1,y1 = x1_y1.split('&')x2,y2 = x2_y2.split('&')return [int(x1),int(y1),int(x2),int(y2)]green_dir = './CCPD2020/ccpd_green/green'
green_imgPaths = glob.glob(green_dir+'/*.jpg')
print('图片数量:',len(green_imgPaths))name2num = dict()
for imgPath in green_imgPaths:chepai = get_chepai(imgPath)if chepai in name2num: name2num[chepai] += 1else: name2num[chepai] = 0crop_dir = './CCPD2020/ccpd_green/green_crop_94x24/'
for index,imgPath in enumerate(green_imgPaths):chepai = get_chepai(imgPath)img = cv2.imread(imgPath)x1,y1,x2,y2 = get_box(imgPath)img_crop = img[y1:y2,x1:x2]img_crop = cv2.resize(img_crop,(94,24))cv2.imwrite(crop_dir+'{}_{}.jpg'.format(chepai,name2num[chepai]),img_crop)name2num[chepai] -= 1if index % 2000==0: print(index)crop_imgPaths = glob.glob(crop_dir+'/*.jpg')
print('裁剪的车牌图片数量:',len(crop_imgPaths))打印结果
图片数量: 11776
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裁剪的车牌图片数量: 11776
