极客教程Python PIL Image.transpose()方法
PIL是Python图像库，它为Python解释器提供了图像编辑功能。图像模块提供了一个同名的类，用来表示一个PIL图像。该模块还提供了一些工厂函数，包括从文件加载图像和创建新图像的函数。
Image.transpose() 转移图像（以90度为单位翻转或旋转）。
语法：Transpose image (flip or rotate in 90 degree steps)
参数 :
method **- PIL.Image.FLIP_LEFT_RIGHT, PIL.Image.FLIP_TOP_BOTTOM, PIL.Image.ROTATE_90, PIL.Image.ROTATE_180, PIL.Image.ROTATE_270或PIL.Image.TRANSPOSE中的一个。
**返回类型:一个图像对象。
使用的图片:
# Importing Image class from PIL module
from PIL import Image
# Opens a image in RGB mode
im = Image.open(r"C:\Users\System-Pc\Desktop\new.jpg")
# Size of the image in pixels (size of original image)
# (This is not mandatory)
width, height = im.size
# Setting the points for cropped image
left = 6
top = height / 4
right = 174
bottom = 3 * height / 4
# Cropped image of above dimension
# (It will not change original image)
im1 = im.crop((left, top, right, bottom))
newsize = (200, 200)
im1 = im1.transpose(Image.FLIP_LEFT_RIGHT)
# Shows the image in image viewer
im1.show()
输出:
另一个例子：这里的转换参数被改变了。
使用到的图片:
# Importing Image class from PIL module
from PIL import Image
# Opens a image in RGB mode
im = Image.open(r"C:\Users\System-Pc\Desktop\flower1.jpg")
# Size of the image in pixels (size of original image)
# (This is not mandatory)
width, height = im.size
# Setting the points for cropped image
left = 3
top = height / 2
right = 164
bottom = 3 * height / 2
# Cropped image of above dimension
# (It will not change original image)
im1 = im.crop((left, top, right, bottom))
newsize = (1800, 1800)
im1 = im1.transpose(Image.FLIP_TOP_BOTTOM)
# Shows the image in image viewer
im1.show()
输出:
