#定义中心切割
centerCrop = transforms.CenterCrop((img.size[0]/2,img.size[1]/2))
imgccrop = centerCrop(img)
 
transforms.RandomCrop(size,padding=0)

#要求目标size必须为整数
randomCrop1 = transforms.RandomCrop((int(img.size[0]/2),int(img.size[1]/2))) #padding默认为False
randomCrop2 = transforms.RandomCrop((int(img.size[0]/2),int(img.size[1]/2)),padding=10)
 
 
imgrcrop1 = randomCrop1(img)
imgrcrop2 = randomCrop2(img)
 

#随机将图片旋转180°
randomFlip = transforms.RandomHorizontalFlip()
 
imgf = randomFlip(img)

#参数需为一个整数，不能是float或者tuple
randomcut = transforms.RandomResizedCrop(100)
imgc = randomcut(img)

#加边界框
pad = transforms.Pad(padding=10,fill=0)
pad_img = pad(img)
pad_img.save("block.jpg")