Python PIL - 调整图像大小

Question

我正在尝试使用 PIL 更改图像的大小，将较大的图像变成较小的图像，反之亦然。我做了各种测试，但我得不到我想要的结果。以下是我对 900x1600 图像所做的测试：

每次输入相同：Image

size = (1080, 1080)
userImage = Image.open("./Images/UsersImages/001.png")
userImage.resize(size)
userImage.show()

size = (1080, 1080)
userImage = Image.open("./Images/UsersImages/001.png")
userImage.thumbnail(size, Image.ANTIALIAS)
userImage.show()

userImage = Image.open("./Images/UsersImages/001.png")
userImageWidth, userImageHeight = userImage.size

leftBorder = 4
topBorder = userImageHeight / 5
rightBorder = 154
bottomBorder = 3 * userImageHeight / 5
userImage = userImage.crop((leftBorder, topBorder, rightBorder, bottomBorder))

newsize = (1080, 1080)
userImage = userImage.resize(newsize)
userImage.show()

userImage = Image.open("./Images/UsersImages/001.png")
userImageWidth, userImageHeight = userImage.size
    
if userImageWidth > 1080:
    bottomBorder = (userImageWidth - 1080) / 2
    topBorder = bottomBorder
else:
    bottomBorder, topBorder = 0, 0

if userImageHeight > 1080:
    leftBorder = (userImageHeight - 1080) / 2
    rightBorder = leftBorder
else:
    leftBorder, rightBorder = 0, 0

userImage = userImage.crop((leftBorder, topBorder, rightBorder, bottomBorder))
userImage.show()

在大多数情况下，照片与以前完全一样。在有裁切的情况下，它被切得很小。

如何将任何图片调整为 1080x1080？我不在乎照片是否被拉伸。重要的是任何类型的图像，无论大小，都将调整为 1080x1080。

Answer 1

使用userImage = userImage.resize(size)，因为resize()returns一个复制的图片，调整大小；它不会主动调整图像大小。

size = (1080, 1080)
userImage = Image.open(f"./Images/UsersImages/001.png")
userImage = userImage.resize(size) ### EDITED LINE
userImage.show()

Python PIL - 调整图像大小

Python PIL - Resize Images

python

python-imaging-library

python-3.x