废弃的scipy imresize()函数的替代品？

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我曾经使用scipy的resize函数来降低图像的比例。但由于这个函数在最新版本的scipy中被废弃了，我正在寻找一个替代方案。PIL似乎很有前途，但我怎么能用它来处理3D图像？(600,800,3)到(300,400,3)

我研究了numpy.resize、skimage，但特别是对于skimage，我不确定它的作用是否与scipy的imresize()完全一样。

3 个评论

Achintha Ihalage ：

Did you try openCV?

user10229833 ：

嗨，阿文，我以为cv2调整大小只需要2d阵列？

user10229833 ：

我研究了cv2（openCV），发现： import cv2 content_image = scipy.misc.imread("images/louvre.jpg") content_image = cv2.resize(content_image, None,fx=0.5,fy=0.5) 工作正常

python

image

resize

user10229833

发布于 2019-08-16

2 个回答

Achintha Ihalage

发布于 2019-09-05

已采纳

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Here 是用OpenCV调整彩色图像大小的一种方法。

import numpy as np
import cv2
image = cv2.imread('image.png')
cv2.imshow("Original", image)
The ratio is r. The new image will
have a height of 50 pixels. To determine the ratio of the new
height to the old height, we divide 50 by the old height.
r = 50.0 / image.shape[0]
dim = (int(image.shape[1] * r), 50)
resized = cv2.resize(image, dim, interpolation = cv2.INTER_AREA)
cv2.imshow("Resized (Height) ", resized)
cv2.waitKey(0)


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           正如在
           
            官方文件
           
           ，你可以用
           
            numpy.array(Image.fromarray(arr).resize())
           
           代替。
          
          
           P.S:
           
            scipy.misc
           
           模块中还有许多其他的图像功能被废弃。你可以查看它们
           
            here
           
           .我还在下面引用了他们的话，以防网站发生变化。
          
          Deprecated functions:
bytescale(*args, **kwds)  bytescale is deprecated! bytescale is deprecated in SciPy 1.0.0, and will be removed in 1.2.0.
fromimage(*args, **kwds)  fromimage is deprecated! fromimage is deprecated in SciPy 1.0.0.
imfilter(*args, **kwds)   imfilter is deprecated! imfilter is deprecated in SciPy 1.0.0, and will be removed in 1.2.0.
imread(*args, **kwds)     imread is deprecated! imread is deprecated in SciPy 1.0.0, and will be removed in 1.2.0.
imresize(*args, **kwds)   imresize is deprecated! imresize is deprecated in SciPy 1.0.0, and will be removed in 1.3.0.
imrotate(*args, **kwds)   imrotate is deprecated! imrotate is deprecated in SciPy 1.0.0, and will be removed in 1.2.0.