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a61f6915
编写于
8月 16, 2022
作者:
Z
zhiboniu
提交者:
GitHub
8月 16, 2022
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vehicleplate self train docs (#6660)
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deploy/pipeline/tools/ccpd2ocr_all.py
deploy/pipeline/tools/ccpd2ocr_all.py
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deploy/pipeline/tools/ccpd2ocr_all.py
0 → 100644
浏览文件 @
a61f6915
import
cv2
import
os
import
json
from
tqdm
import
tqdm
import
numpy
as
np
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'
]
def
make_label_2020
(
img_dir
,
save_gt_folder
,
phase
):
crop_img_save_dir
=
os
.
path
.
join
(
save_gt_folder
,
phase
,
'crop_imgs'
)
os
.
makedirs
(
crop_img_save_dir
,
exist_ok
=
True
)
f_det
=
open
(
os
.
path
.
join
(
save_gt_folder
,
phase
,
'det.txt'
),
'w'
,
encoding
=
'utf-8'
)
f_rec
=
open
(
os
.
path
.
join
(
save_gt_folder
,
phase
,
'rec.txt'
),
'w'
,
encoding
=
'utf-8'
)
i
=
0
for
filename
in
tqdm
(
os
.
listdir
(
os
.
path
.
join
(
img_dir
,
phase
))):
str_list
=
filename
.
split
(
'-'
)
if
len
(
str_list
)
<
5
:
continue
coord_list
=
str_list
[
3
].
split
(
'_'
)
txt_list
=
str_list
[
4
].
split
(
'_'
)
boxes
=
[]
for
coord
in
coord_list
:
boxes
.
append
([
int
(
x
)
for
x
in
coord
.
split
(
"&"
)])
boxes
=
[
boxes
[
2
],
boxes
[
3
],
boxes
[
0
],
boxes
[
1
]]
lp_number
=
provinces
[
int
(
txt_list
[
0
])]
+
alphabets
[
int
(
txt_list
[
1
])]
+
''
.
join
([
ads
[
int
(
x
)]
for
x
in
txt_list
[
2
:]])
# det
det_info
=
[{
'points'
:
boxes
,
'transcription'
:
lp_number
}]
f_det
.
write
(
'{}
\t
{}
\n
'
.
format
(
os
.
path
.
join
(
"CCPD2020/ccpd_green"
,
phase
,
filename
),
json
.
dumps
(
det_info
,
ensure_ascii
=
False
)))
# rec
boxes
=
np
.
float32
(
boxes
)
img
=
cv2
.
imread
(
os
.
path
.
join
(
img_dir
,
phase
,
filename
))
# crop_img = img[int(boxes[:,1].min()):int(boxes[:,1].max()),int(boxes[:,0].min()):int(boxes[:,0].max())]
crop_img
=
get_rotate_crop_image
(
img
,
boxes
)
crop_img_save_filename
=
'{}_{}.jpg'
.
format
(
i
,
'_'
.
join
(
txt_list
))
crop_img_save_path
=
os
.
path
.
join
(
crop_img_save_dir
,
crop_img_save_filename
)
cv2
.
imwrite
(
crop_img_save_path
,
crop_img
)
f_rec
.
write
(
'{}/{}/crop_imgs/{}
\t
{}
\n
'
.
format
(
"CCPD2020/PPOCR"
,
phase
,
crop_img_save_filename
,
lp_number
))
i
+=
1
f_det
.
close
()
f_rec
.
close
()
def
make_label_2019
(
list_dir
,
save_gt_folder
,
phase
):
crop_img_save_dir
=
os
.
path
.
join
(
save_gt_folder
,
phase
,
'crop_imgs'
)
os
.
makedirs
(
crop_img_save_dir
,
exist_ok
=
True
)
f_det
=
open
(
os
.
path
.
join
(
save_gt_folder
,
phase
,
'det.txt'
),
'w'
,
encoding
=
'utf-8'
)
f_rec
=
open
(
os
.
path
.
join
(
save_gt_folder
,
phase
,
'rec.txt'
),
'w'
,
encoding
=
'utf-8'
)
with
open
(
os
.
path
.
join
(
list_dir
,
phase
+
".txt"
),
'r'
)
as
rf
:
imglist
=
rf
.
readlines
()
i
=
0
for
idx
,
filename
in
enumerate
(
imglist
):
if
idx
%
1000
==
0
:
print
(
"{}/{}"
.
format
(
idx
,
len
(
imglist
)))
filename
=
filename
.
strip
()
str_list
=
filename
.
split
(
'-'
)
if
len
(
str_list
)
<
5
:
continue
coord_list
=
str_list
[
3
].
split
(
'_'
)
txt_list
=
str_list
[
4
].
split
(
'_'
)
boxes
=
[]
for
coord
in
coord_list
:
boxes
.
append
([
int
(
x
)
for
x
in
coord
.
split
(
"&"
)])
boxes
=
[
boxes
[
2
],
boxes
[
3
],
boxes
[
0
],
boxes
[
1
]]
lp_number
=
provinces
[
int
(
txt_list
[
0
])]
+
alphabets
[
int
(
txt_list
[
1
])]
+
''
.
join
([
ads
[
int
(
x
)]
for
x
in
txt_list
[
2
:]])
# det
det_info
=
[{
'points'
:
boxes
,
'transcription'
:
lp_number
}]
f_det
.
write
(
'{}
\t
{}
\n
'
.
format
(
os
.
path
.
join
(
"CCPD2019"
,
filename
),
json
.
dumps
(
det_info
,
ensure_ascii
=
False
)))
# rec
boxes
=
np
.
float32
(
boxes
)
imgpath
=
os
.
path
.
join
(
list_dir
[:
-
7
],
filename
)
img
=
cv2
.
imread
(
imgpath
)
# crop_img = img[int(boxes[:,1].min()):int(boxes[:,1].max()),int(boxes[:,0].min()):int(boxes[:,0].max())]
crop_img
=
get_rotate_crop_image
(
img
,
boxes
)
crop_img_save_filename
=
'{}_{}.jpg'
.
format
(
i
,
'_'
.
join
(
txt_list
))
crop_img_save_path
=
os
.
path
.
join
(
crop_img_save_dir
,
crop_img_save_filename
)
cv2
.
imwrite
(
crop_img_save_path
,
crop_img
)
f_rec
.
write
(
'{}/{}/crop_imgs/{}
\t
{}
\n
'
.
format
(
"CCPD2019/PPOCR"
,
phase
,
crop_img_save_filename
,
lp_number
))
i
+=
1
f_det
.
close
()
f_rec
.
close
()
def
get_rotate_crop_image
(
img
,
points
):
'''
img_height, img_width = img.shape[0:2]
left = int(np.min(points[:, 0]))
right = int(np.max(points[:, 0]))
top = int(np.min(points[:, 1]))
bottom = int(np.max(points[:, 1]))
img_crop = img[top:bottom, left:right, :].copy()
points[:, 0] = points[:, 0] - left
points[:, 1] = points[:, 1] - top
'''
assert
len
(
points
)
==
4
,
"shape of points must be 4*2"
img_crop_width
=
int
(
max
(
np
.
linalg
.
norm
(
points
[
0
]
-
points
[
1
]),
np
.
linalg
.
norm
(
points
[
2
]
-
points
[
3
])))
img_crop_height
=
int
(
max
(
np
.
linalg
.
norm
(
points
[
0
]
-
points
[
3
]),
np
.
linalg
.
norm
(
points
[
1
]
-
points
[
2
])))
pts_std
=
np
.
float32
([[
0
,
0
],
[
img_crop_width
,
0
],
[
img_crop_width
,
img_crop_height
],
[
0
,
img_crop_height
]])
M
=
cv2
.
getPerspectiveTransform
(
points
,
pts_std
)
dst_img
=
cv2
.
warpPerspective
(
img
,
M
,
(
img_crop_width
,
img_crop_height
),
borderMode
=
cv2
.
BORDER_REPLICATE
,
flags
=
cv2
.
INTER_CUBIC
)
dst_img_height
,
dst_img_width
=
dst_img
.
shape
[
0
:
2
]
if
dst_img_height
*
1.0
/
dst_img_width
>=
1.5
:
dst_img
=
np
.
rot90
(
dst_img
)
return
dst_img
img_dir
=
'./CCPD2020/ccpd_green'
save_gt_folder
=
'./CCPD2020/PPOCR'
# phase = 'train' # change to val and test to make val dataset and test dataset
for
phase
in
[
'train'
,
'val'
,
'test'
]:
make_label_2020
(
img_dir
,
save_gt_folder
,
phase
)
list_dir
=
'./CCPD2019/splits/'
save_gt_folder
=
'./CCPD2019/PPOCR'
for
phase
in
[
'train'
,
'val'
,
'test'
]:
make_label_2019
(
list_dir
,
save_gt_folder
,
phase
)
docs/advanced_tutorials/customization/ppvehicle_plate.md
0 → 100644
浏览文件 @
a61f6915
简体中文 |
[
English
](
./ppvehicle_plate_en.md
)
# 车牌识别任务二次开发
车牌识别任务,采用PP-OCRv3模型在车牌数据集上进行fine-tune得到,过程参考
[
PaddleOCR车牌应用介绍
](
https://github.com/PaddlePaddle/PaddleOCR/blob/release/2.5/applications/%E8%BD%BB%E9%87%8F%E7%BA%A7%E8%BD%A6%E7%89%8C%E8%AF%86%E5%88%AB.md
)
在CCPD2019数据集上进行了拓展。
## 数据准备
1.
对于CCPD2019、CCPD2020数据集,我们提供了处理脚本
[
ccpd2ocr_all.py
](
../../../deploy/pipeline/tools/ccpd2ocr_all.py
)
, 使用时跟CCPD2019、CCPD2020数据集文件夹放在同一目录下,然后执行脚本即可在CCPD2019/PPOCR、CCPD2020/PPOCR目录下得到检测、识别模型的训练标注文件。训练时可以整合到一起使用。
2.
对于其他来源数据或者自标注数据,可以按如下格式整理训练列表文件:
-
**车牌检测标注**
标注文件格式如下,中间用'
\t
'分隔:
```
" 图像文件路径 标注框标注信息"
CCPD2020/xxx.jpg [{"transcription": "京AD88888", "points": [[310, 104], [416, 141], [418, 216], [312, 179]]}, {...}]
```
标注框标注信息是包含多个字典的list,有多少个标注框就有多少个字典对应,字典中的
`points`
表示车牌框的四个点的坐标(x, y),从左上角的点开始顺时针排列。
`transcription`
表示当前文本框的文字,
***当其内容为“###”时,表示该文本框无效,在训练时会跳过。**
*
-
**车牌字符识别标注**
标注文件的格式如下,txt文件中默认请将图片路径和图片标签用'
\t
'分割,如用其他方式分割将造成训练报错。其中图片是对车牌字符的截图。
```
" 图像文件名 字符标注信息 "
CCPD2020/crop_imgs/xxx.jpg 京AD88888
```
## 模型训练
首先执行以下命令clone PaddleOCR库代码到训练机器:
```
git clone git@github.com:PaddlePaddle/PaddleOCR.git
```
下载预训练模型:
```
#检测预训练模型:
mkdir models
cd models
wget https://paddleocr.bj.bcebos.com/PP-OCRv3/chinese/ch_PP-OCRv3_det_distill_train.tar
tar -xf ch_PP-OCRv3_det_distill_train.tar
#识别预训练模型:
wget https://paddleocr.bj.bcebos.com/PP-OCRv3/chinese/ch_PP-OCRv3_rec_train.tar
tar -xf ch_PP-OCRv3_rec_train.tar
cd ..
```
安装相关依赖环境:
```
cd PaddleOCR
pip install -r requirements.txt
```
然后进行训练相关配置修改。
### 修改配置
**检测模型配置项**
修改配置项包括以下3部分内容,可以在训练时以命令行修改,或者直接在配置文件
`configs/det/ch_PP-OCRv3/ch_PP-OCRv3_det_student.yml`
中修改:
1.
模型存储和训练相关:
-
Global.pretrained_model: 指向前面下载的PP-OCRv3文本检测预训练模型地址
-
Global.eval_batch_step: 模型多少step评估一次,一般设置为一个epoch对应的step数,可以从训练开始的log中读取。此处以[0, 772]为例,第一个数字表示从第0各step开始算起。
2.
优化器相关:
-
Optimizer.lr.name: 学习率衰减器设为常量 Const
-
Optimizer.lr.learning_rate: 做 fine-tune 实验,学习率需要设置的比较小,此处学习率设为配置文件中的0.05倍
-
Optimizer.lr.warmup_epoch: warmup_epoch设为0
3.
数据集相关:
-
Train.dataset.data_dir:指向训练集图片存放根目录
-
Train.dataset.label_file_list:指向训练集标注文件
-
Eval.dataset.data_dir:指向测试集图片存放根目录
-
Eval.dataset.label_file_list:指向测试集标注文件
**识别模型配置项**
修改配置项包括以下3部分内容,可以在训练时以命令行修改,或者直接在配置文件
`configs/rec/PP-OCRv3/ch_PP-OCRv3_rec.yml`
中修改:
1.
模型存储和训练相关:
-
Global.pretrained_model: 指向PP-OCRv3文本识别预训练模型地址
-
Global.eval_batch_step: 模型多少step评估一次,一般设置为一个epoch对应的step数,可以从训练开始的log中读取。此处以[0, 90]为例,第一个数字表示从第0各step开始算起。
2.
优化器相关
-
Optimizer.lr.name: 学习率衰减器设为常量 Const
-
Optimizer.lr.learning_rate: 做 fine-tune 实验,学习率需要设置的比较小,此处学习率设为配置文件中的0.05倍
-
Optimizer.lr.warmup_epoch: warmup_epoch设为0
3.
数据集相关
-
Train.dataset.data_dir:指向训练集图片存放根目录
-
Train.dataset.label_file_list:指向训练集标注文件
-
Eval.dataset.data_dir:指向测试集图片存放根目录
-
Eval.dataset.label_file_list:指向测试集标注文件
### 执行训练
然后运行以下命令开始训练。如果在配置文件中已经做了修改,可以省略
`-o`
及其后面的内容。
**检测模型训练命令**
```
#单卡训练
python3 tools/train.py -c configs/det/ch_PP-OCRv3/ch_PP-OCRv3_det_student.yml -o \
Global.pretrained_model=models/ch_PP-OCRv3_det_distill_train/student.pdparams \
Global.save_model_dir=output/CCPD/det \
Global.eval_batch_step="[0, 772]" \
Optimizer.lr.name=Const \
Optimizer.lr.learning_rate=0.0005 \
Optimizer.lr.warmup_epoch=0 \
Train.dataset.data_dir=/home/aistudio/ccpd_data/ \
Train.dataset.label_file_list=[/home/aistudio/ccpd_data/train/det.txt]
#多卡训练
export CUDA_VISIBLE_DEVICES=0,1,2,3
python3 -m paddle.distributed.launch \
tools/train.py -c configs/det/ch_PP-OCRv3/ch_PP-OCRv3_det_student.yml -o \
Global.pretrained_model=models/ch_PP-OCRv3_det_distill_train/student.pdparams \
Global.save_model_dir=output/CCPD/det \
Global.eval_batch_step="[0, 772]" \
Optimizer.lr.name=Const \
Optimizer.lr.learning_rate=0.0005 \
Optimizer.lr.warmup_epoch=0 \
Train.dataset.data_dir=/home/aistudio/ccpd_data/ \
Train.dataset.label_file_list=[/home/aistudio/ccpd_data/train/det.txt]
```
训练完成后可以执行以下命令进行性能评估:
```
#单卡评估
python tools/eval.py -c configs/det/ch_PP-OCRv3/ch_PP-OCRv3_det_student.yml -o \
Global.pretrained_model=output/CCPD/det/best_accuracy.pdparams \
Eval.dataset.data_dir=/home/aistudio/ccpd_data/ \
Eval.dataset.label_file_list=[/home/aistudio/ccpd_data/test/det.txt]
```
**识别模型训练命令**
```
#单卡训练
python3 tools/train.py -c configs/rec/PP-OCRv3/ch_PP-OCRv3_rec.yml -o \
Global.pretrained_model=models/ch_PP-OCRv3_rec_train/student.pdparams \
Global.save_model_dir=output/CCPD/rec/ \
Global.eval_batch_step="[0, 90]" \
Optimizer.lr.name=Const \
Optimizer.lr.learning_rate=0.0005 \
Optimizer.lr.warmup_epoch=0 \
Train.dataset.data_dir=/home/aistudio/ccpd_data \
Train.dataset.label_file_list=[/home/aistudio/ccpd_data/train/rec.txt] \
Eval.dataset.data_dir=/home/aistudio/ccpd_data \
Eval.dataset.label_file_list=[/home/aistudio/ccpd_data/test/rec.txt]
#多卡训练
export CUDA_VISIBLE_DEVICES=0,1,2,3
python3 -m paddle.distributed.launch \
tools/train.py -c configs/rec/PP-OCRv3/ch_PP-OCRv3_rec.yml -o \
Global.pretrained_model=models/ch_PP-OCRv3_rec_train/student.pdparams \
Global.save_model_dir=output/CCPD/rec/ \
Global.eval_batch_step="[0, 90]" \
Optimizer.lr.name=Const \
Optimizer.lr.learning_rate=0.0005 \
Optimizer.lr.warmup_epoch=0 \
Train.dataset.data_dir=/home/aistudio/ccpd_data \
Train.dataset.label_file_list=[/home/aistudio/ccpd_data/train/rec.txt] \
Eval.dataset.data_dir=/home/aistudio/ccpd_data \
Eval.dataset.label_file_list=[/home/aistudio/ccpd_data/test/rec.txt]
```
训练完成后可以执行以下命令进行性能评估:
```
#单卡评估
python tools/eval.py -c configs/rec/PP-OCRv3/ch_PP-OCRv3_rec.yml -o \
Global.pretrained_model=output/CCPD/rec/best_accuracy.pdparams \
Eval.dataset.data_dir=/home/aistudio/ccpd_data/ \
Eval.dataset.label_file_list=[/home/aistudio/ccpd_data/test/rec.txt]
```
### 模型导出
使用下述命令将训练好的模型导出为预测部署模型。
**检测模型导出**
```
python tools/export_model.py -c configs/det/ch_PP-OCRv3/ch_PP-OCRv3_det_student.yml -o \
Global.pretrained_model=output/CCPD/det/best_accuracy.pdparams \
Global.save_inference_dir=output/det/infer
```
**识别模型导出**
```
python tools/export_model.py -c configs/rec/PP-OCRv3/ch_PP-OCRv3_rec.yml -o \
Global.pretrained_model=output/CCPD/rec/best_accuracy.pdparams \
Global.save_inference_dir=output/CCPD/rec/infer
```
使用时在PP-Vehicle中的配置文件
`./deploy/pipeline/config/infer_cfg_ppvehicle.yml`
中修改
`VEHICLE_PLATE`
模块中的
`det_model_dir`
、
`rec_model_dir`
项,并开启功能
`enable: True`
。
```
VEHICLE_PLATE:
det_model_dir: [YOUR_DET_INFERENCE_MODEL_PATH] #设置检测模型路径
det_limit_side_len: 736
det_limit_type: "max"
rec_model_dir: [YOUR_REC_INFERENCE_MODEL_PATH] #设置识别模型路径
rec_image_shape: [3, 48, 320]
rec_batch_num: 6
word_dict_path: deploy/pipeline/ppvehicle/rec_word_dict.txt
enable: True #开启功能
```
然后可以使用-->至此即完成更新车牌识别模型任务。
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