python - 如何使用 jupyter notebook 在网格中显示多个 png

Question

我有一个文件名列表，位于与 jupyter notebook 相同的文件夹中。

fnames = ['foo.png', 'my_img.png', 'img1.png', ..... 'last_img.png']

我想在笔记本输出单元格内的网格中显示这些图像，指定:

• 行数
• 列数
• 要显示的图像变暗(以像素为单位)(每张图像的暗度相同)

Answer 1

更深入的研究，您可以使用 ipywidgets 作为替代方案在 Tabs 中查看:

import os
import ipywidgets as widgets
from IPython.display import display

# Define a useful function
def get_image(f_path):
    '''
    Returns the image from a path
    '''
    img_labs = ['jpg','png']
    if any(x in img_labs for x in f_path.split('.')):
        file = os.path.join(folder,f_path)
        image = open(file,'rb').read()
        return image

# Do the actual work here
folder = 'Some Path to a Folder of Images'
files  = os.listdir(folder)
images = [get_image(x) for x in files]
children = [widgets.Image(value = img) for img in images if str(type(img)) != '<class \'NoneType\'>']
labels = ['{}'.format(i) for i in range(len(children))]

# Customize your layout here:
box_layout = widgets.Layout(
    display='flex',
    flex_flow='column',
    align_items='stretch',
    border='solid',
    width='50%')

# Create the widget
tab = widgets.Tab()
tab.children = children

# Label em'!
for i in range(len(children)):
    tab.set_title(i,labels[i])

display(tab)

有关更多详细信息，请访问 documentation .