如何将不同长度和宽度的图像裁剪为相等的长度和宽度？

Posted 2023-02-25

【中文标题】如何将不同长度和宽度的图像裁剪为相等的长度和宽度？

【英文标题】：How to crop images of different length and width to equal length and width?

【发布时间】：2019-05-28 12:31:57

【问题描述】：

我正在使用 COCO 数据集。在该数据集中图像具有不同的长度和宽度，但我必须将它们裁剪为相等的长度和宽度。

所有图像都放在一个文件夹中。我试图将它们裁剪成相等的长度和宽度，即 386X386

import sys
import os
from PIL import Image

filepath = "/content/drive/My Drive/Colab Notebooks/SRGAN/data"

# Loop through all provided arguments
for filename in os.listdir(filepath):
    if "." not in filename:
        continue
    ending = filename.split(".")[1]
    if ending not in ["jpg", "gif", "png"]:
        continue


    # Attempt to open an image file
    image = Image.open(os.path.join(filepath, filename))


    # Perform operations on the image here
    image = image.crop((0, 0, 386, 386))

    # Split our origional filename into name and extension 
    name, extension = os.path.splitext(filename)

    # Save the image as "(origional_name)_thumb.jpg
    print(name + '_cropped.jpg')
    image.save(os.path.join("/content/drive/My Drive/Colab Notebooks/SRGAN/data", name + '_cropped.jpg'))

它应该将所有图像裁剪为 386X386 大小，但它会生成具有不同长度和宽度的相同图像的多个副本。

【问题讨论】：

Crop entire image with the same cropping size with PIL in python的可能重复

【参考方案1】：

from keras.preprocessing import image
test_img = image.load_img('Image Path', target_size=(386,386))

“目标尺寸”定义要裁剪到的尺寸。