处理图片

from PIL import Image
from PIL import ImageEnhance
from PIL import ImageFilter
im = Image.open("C:\\Users\\Leeing\\Pictures\\微信图片_20191128212811.jpg")#读图片
im.thumbnail((128,128))
im=im.convert('RGB')
im.save("a_small.jpg","JPEG")
r,g,b = im.split()
om =Image.merge("RGB",(b,g,r))
om.save("b_changecolor.jpg","JPEG")
pm= im.filter(ImageFilter.CONTOUR)
pm.save("c_contour.jpg","JPEG")
qm = ImageEnhance.Contrast(im)
qm.enhance(20).save("d_EnContrast.jpg","JPEG")