一：日志依赖
https://blog.csdn.net/weixin_41803874/article/details/81201807
二：代码实现
from diagnose_logging import Logger
from PIL import Image
import os
# 声明日志
log = Logger('img_pre.py')
logger = log.getlog()
class ImgPre:
def __init__(self, rootPath, export_path_base):
self.rootPath = rootPath # 图像完整路径
self.export_path_base = export_path_base
# 创建输出根目录
try:
if not os.path.exists(export_path_base):
os.mkdir(export_path_base)
except Exception as e:
logger.error(e)
logger.info('ImgPre: %s', rootPath)
def get_savename(self, operate):
"""
:param export_path_base: 图像输出路径
:param operate: 脸部区域名
:return: 返回图像存储名
"""
try:
import time
# 获取时间戳，用于区分图像
now = time.time()
tail_time = str(round(now * 1000000))[-4:] # 时间戳尾数
head_time = time.strftime("%Y%m%d%H%M%S", time.localtime(time.time()))
# 时间标签
label = str(head_time + tail_time)
# 输出文件夹
export_path_base = self.export_path_base
# 子文件夹以“操作operate”命名
out_path = export_path_base + operate
# 创建子文件夹
if not os.path.exists(out_path):
os.mkdir(out_path)
# 存储完整路径
savename = out_path + '/' + operate + '_' + label + ".jpg"
# 日志
logger.info('save:%s', savename)
return savename
except Exception as e:
logger.error('get_savename ERROR')
logger.error(e)
def lightness(self, light):
"""改变图像亮度.
推荐值：
0.87，1.07
明亮程度
darker < 1.0 <lighter
"""
try:
operate = 'lightness_' + str(light)
# 图像完整路径
rootPath = self.rootPath
with Image.open(rootPath) as image:
# 图像左右翻转
out = image.point(lambda p: p * light)
# 重命名
savename = self.get_savename(operate)
# 图像存储
out.save(savename)
# 日志
# logger.info(operate)
except Exception as e:
logger.error('ERROR %s', operate)
logger.error(e)
def rotate(self, angle):
"""图像旋转15度、30度."""
try:
operate = 'rotate_' + str(angle)
# 图像完整路径
rootPath = self.rootPath
with Image.open(rootPath) as image:
# 图像左右翻转
out = image.rotate(angle)
# 重命名
savename = self.get_savename(operate)
# 图像存储
out.save(savename, quality=100)
# 日志
# logger.info(operate)
except Exception as e:
logger.error('ERROR %s', operate)
logger.error(e)
def transpose(self):
"""图像左右翻转操作."""
try:
operate = 'transpose'
# 图像完整路径
rootPath = self.rootPath
with Image.open(rootPath) as image:
# 图像左右翻转
out = image.transpose(Image.FLIP_LEFT_RIGHT)
# 重命名
savename = self.get_savename(operate)
# 图像存储
out.save(savename, quality=100) # quality=100
# 日志
# logger.info(operate)
except Exception as e:
logger.error('ERROR %s', operate)
logger.error(e)
def deform(self):
"""图像拉伸."""
try:
operate = 'deform'
# 图像完整路径
rootPath = self.rootPath
with Image.open(rootPath) as image:
w, h = image.size
w = int(w)
h = int(h)
# 拉伸成宽为w的正方形
out_ww = image.resize((int(w), int(w)))
savename = self.get_savename(operate + '_ww')
out_ww.save(savename, quality=100)
# 拉伸成宽为h的正方形
out_ww = image.resize((int(h), int(h)))
savename = self.get_savename(operate + '_hh')
out_ww.save(savename, quality=100)
# 日志
# logger.info(operate)
except Exception as e:
logger.error('ERROR %s', operate)
logger.error(e)
def crop(self):
"""提取四个角落和中心区域."""
try:
operate = 'crop'
# 图像完整路径
rootPath = self.rootPath
with Image.open(rootPath) as image:
w, h = image.size
# 切割后尺寸
scale = 0.875
# 切割后长宽
ww = int(w * scale)
hh = int(h * scale)
# 图像起点，左上角坐标
x = y = 0
# 切割左上角
x_lu = x
y_lu = y
out_lu = image.crop((x_lu, y_lu, ww, hh))
savename = self.get_savename(operate + '_lu')
out_lu.save(savename, quality=100)
# logger.info(operate + '_lu')
# 切割左下角
x_ld = int(x)
y_ld = int(y + (h - hh))
out_ld = image.crop((x_ld, y_ld, ww, hh))
savename = self.get_savename(operate + '_ld')
out_ld.save(savename, quality=100)
# logger.info(operate + '_ld')
# 切割右上角
x_ru = int(x + (w - ww))
y_ru = int(y)
out_ru = image.crop((x_ru, y_ru, w, hh))
savename = self.get_savename(operate + '_ru')
out_ru.save(savename, quality=100)
# logger.info(operate + '_ru')
# 切割右下角
x_rd = int(x + (w - ww))
y_rd = int(y + (h - hh))
out_rd = image.crop((x_rd, y_rd, w, h))
savename = self.get_savename(operate + '_rd')
out_rd.save(savename, quality=100)
# logger.info(operate + '_rd')
# 切割中心
x_c = int(x + (w - ww) / 2)
y_c = int(y + (h - hh) / 2)
out_c = image.crop((x_c, y_c, ww, hh))
savename = self.get_savename(operate + '_c')
out_c.save(savename, quality=100)
# logger.info('提取中心')
except Exception as e:
logger.error('ERROR %s', operate)
logger.error(e)
def test():
# 源地址和输出地址
rootPath = 'E:/face/1.jpg'
export_path_base = 'E:/face/image/'
# 声明类对象
imgPre = ImgPre(rootPath, export_path_base)
imgPre.deform()
imgPre.transpose()
imgPre.rotate(15)
imgPre.rotate(30)
imgPre.crop()
imgPre.lightness(1.07)
imgPre.lightness(0.87)
if __name__ == '__main__':
import datetime
print('start...')
# 计时
start_time = datetime.datetime.now()
test()
end_time = datetime.datetime.now()
time_consume = (end_time - start_time).microseconds / 1000000
logger.info('start_time: %s', start_time)
logger.info('end_time: %s', end_time)
logger.info('time_consume: %s(s)', time_consume) # 0.280654(s)
logger.info('main finish')