PIL - 图像不旋转 [英] PIL - Images not rotating

问题描述

我很好奇为什么我的图像没有旋转，它每次都以相同的位置结束.

I'm curious as to why my image is not rotating, it ends up in the same position every time.

img = Image.open(r'C:\Users\Brett\Downloads\testing.jpg')
exif_data = {
    TAGS[k]: v
    for k, v in img._getexif().items()
    if k in TAGS
}
print(exif_data['Orientation'])

输出'6'

无论我告诉图像旋转多少度，它最终都会处于相同的位置.

No matter how many degrees I tell the image to rotate it ends up in the same position.

if exif_data['Orientation'] == 6:
    img.rotate(90)

或

if exif_data['Orientation'] == 6:
    img.rotate(270) 

或

if exif_data['Orientation'] == 6:
    img.rotate(180)

我总是得到逆时针旋转 90 度的图像.我做错了什么吗?

I always end up with an image rotated 90 degrees counter-clockwise. Am I doing something obviously wrong?

推荐答案

来自 (DOCS)

Image.rotate(angle, resample=0, expand=0, center=None, translate=None)

Image.rotate(angle, resample=0, expand=0, center=None, translate=None)

返回此图像的旋转副本.此方法返回此图像的副本，围绕其中心逆时针旋转给定的度数.

Returns a rotated copy of this image. This method returns a copy of this image, rotated the given number of degrees counter clockwise around its centre.

图像没有原地旋转.您需要存储从 rotate() 返回的图像.也许是这样的:

The image is not rotated in place. You need to store the image returned from rotate(). Maybe something like:

if exif_data['Orientation'] == 6:
    new_image = img.rotate(180)

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