How to implement image and office document processing in Python

Python image and office document processing

Python is a high-level programming language that has powerful image and office document processing functions.

Computer image related knowledge

Computer image is a digital image, which consists of an array of pixels. Pixel is the smallest unit of an image, and each pixel has certain brightness and color information. Computer image processing refers to the process of digitally processing images, with the purpose of improving the quality of the image, enhancing the features of the image, or extracting image information. Python provides many libraries for processing computer images, such as Pillow and OpenCV.

Pillow

Pillow is a fork of the Python Imaging Library and is one of the most popular image processing libraries in Python. Pillow provides a wide range of image processing functions, including scaling, rotation, cropping, filtering, color space conversion, and more. Pillow also supports a variety of image formats, including JPEG, PNG, BMP, GIF, and more. The following code demonstrates how to use the Pillow library to open and display an image:

from PIL import Image
im = Image.open('example.jpg')
im.show()

OpenCV

OpenCV is an open source computer vision library that provides many functions for processing images and videos. and algorithms. OpenCV can be used for many different applications such as face detection, object tracking, image segmentation, image recognition, and more. The following code demonstrates how to use the OpenCV library to read and display an image:

import cv2
img = cv2.imread('example.jpg')
cv2.imshow('image', img)
cv2.waitKey(0)
cv2.destroyAllWindows()

Python processing Excel

Python can easily process Excel table data. Python's pandas library provides powerful data analysis capabilities, and it can read and write a variety of file formats, including Excel. The pandas library can also perform operations such as data cleaning, data conversion, data analysis and visualization. For example, the following code can read an Excel file and print the data in it:

import pandas as pd
data = pd.read_excel('example.xlsx')
print(data)

Python processing Word

Python can also be used to process Word documents. The Python-docx library is a powerful tool for processing Word documents. It can create, modify and read Word documents. The following code demonstrates how to create a new Word document using the Python-docx library:

from docx import Document
from docx.shared import Inches
document = Document()
document.add_heading('Document Title', 0)
p = document.add_paragraph('A plain paragraph having some ')
p.add_run('bold').bold = True
p.add_run(' and some ')
p.add_run('italic.').italic = True
document.add_picture('picture.png', width=Inches(1.25))
document.add_page_break()
document.save('example.docx')

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