- 本文为365天深度学习训练营 中的学习记录博客
- 原作者:K同学啊
文件夹目录结构:
主目录:
paper_ data (创建个文件夹,将数据放到这里)
Annotations (放置我们的.xm文件)
images (放置图片文件)
ImageSets:
Main (会在该文件夹内自动生成train.txt、 val.txt、 test.txt和trainval.txt四个文件,
存放训练集、验证集、测试集图片的名字)
ImageSets文件夹下面有个Main子文件夹,其下面存放了 train.txt、val.txt、test.txt和 trainval.txt四个文件,它们是通过split_train_val.py文件来生成的。
# -*- coding: utf-8 -*-
"""
Created on Fri Jul 14 19:08:01 2023
@author: admin
"""
import os
import random
import argparse
parser = argparse.ArgumentParser()
#xml文件的地址,根据自己的数据进行修改,xml一班存放在Annotation下
parser.add_argument('--xml_path', default = 'C:\YOLOv5\yolov5-master\paper_data\Annotations', type = str, help = 'input xml label path')
#数据集的划分,地址选择自己数据下的ImageSets/Main
parser.add_argument('--txt_path', default = 'C:\YOLOv5\yolov5-master\paper_data\ImageSets/Main', type = str, help = 'output txt label path')
opt = parser.parse_args()
trainval_percent = 0.9
train_percent = 8 / 9
xmlfilepath = opt.xml_path
txtsavepath = opt.txt_path
total_xml = os.listdir(xmlfilepath)
if not os.path.exists(txtsavepath):
os.makedirs(txtsavepath)
num = len(total_xml)
list_index = range(num)
tv = int(num * train_percent)
tr = int(tv * train_percent)
trainval = random.sample(list_index, tv)
train = random.sample(trainval, tr)
file_trainval = open(txtsavepath + '/trainval.txt', 'w')
file_test = open(txtsavepath + '/test.txt', 'w')
file_train = open(txtsavepath + '/train.txt', 'w')
file_val = open(txtsavepath + '/val.txt', 'w')
for i in list_index:
name = total_xml[i][:-4] + '\n'
if i in trainval:
file_trainval.write(name)
if i in train:
file_train.write(name)
else:
file_val.write(name)
else:
file_test.write(name)
file_trainval.close()
file_train.close()
file_val.close()
file_test.close()
运行 split_train_val.py 文件后你将得至train.txt、val.txt、test.txt 和 trainval.txt 四 个文件,结果如下:
编写voc_label.py文件
# -*- coding: utf-8 -*-
import xml.etree.ElementTree as ET
import os
from os import getcwd
sets = ['train', 'val', 'test']
classes = ["pineapple"] # 改成自己的类别
abs_path = os.getcwd()
print(abs_path)
def convert(size, box):
dw = 1. / (size[0])
dh = 1. / (size[1])
x = (box[0] + box[1]) / 2.0 - 1
y = (box[2] + box[3]) / 2.0 - 1
w = box[1] - box[0]
h = box[3] - box[2]
x = x * dw
w = w * dw
y = y * dh
h = h * dh
return x, y, w, h
def convert_annotation(image_id):
in_file = open('./annotations/%s.xml' % (image_id), encoding='UTF-8')
out_file = open('./labels/%s.txt' % (image_id), 'w')
tree = ET.parse(in_file)
root = tree.getroot()
size = root.find('size')
w = int(size.find('width').text)
h = int(size.find('height').text)
for obj in root.iter('object'):
difficult = obj.find('difficult').text
cls = obj.find('name').text
if cls not in classes or int(difficult) == 1:
continue
cls_id = classes.index(cls)
xmlbox = obj.find('bndbox')
b = (float(xmlbox.find('xmin').text), float(xmlbox.find('xmax').text), float(xmlbox.find('ymin').text),
float(xmlbox.find('ymax').text))
b1, b2, b3, b4 = b
# 标注越界修正
if b2 > w:
b2 = w
if b4 > h:
b4 = h
b = (b1, b2, b3, b4)
bb = convert((w, h), b)
out_file.write(str(cls_id) + " " + " ".join([str(a) for a in bb]) + '\n')
wd = getcwd()
for image_set in sets:
if not os.path.exists('./labels/'):
os.makedirs('./labels/')
image_ids = open('./ImageSets/Main/%s.txt' % (image_set)).read().strip().split()
list_file = open('./%s.txt' % (image_set), 'w')
for image_id in image_ids:
list_file.write(abs_path + '/images/%s.png\n' % (image_id)) # 注意你的图片格式,如果是.jpg记得修改
convert_annotation(image_id)
list_file.close()
运行voc_label.py文件,你将会得到train.txt、test.txt、val.txt三个文件。
python train.py --img 900 --batch 2 --epoch 5 --data paper_data/ab.yaml --cfg models/yolov5s.yaml --weights yolov5s.pt
文件报错,这里还不知道是什么原因。后续查找修改Bug
通过Y1和Y2的学习,学会了yolov5的环境配置以及用自己的数据集训练模型。接下来就是查阅资料,解决Bug。