[python]裁剪文件夹中所有pdf文档并按名称保存到指定的文件夹

最近在写论文的实验部分，由于latex需要pdf格式的文档，审稿专家需要对pdf图片进行裁剪放大，以保证图片质量。

原图：

裁剪后的图像：

代码粘贴如下。将input_folder和output_folder替换即可。(x1, y1)， (x2, y2) 分别代表裁剪框的像素位置。

import os import PyPDF2 from PIL import Image def crop_and_save_pdf(input_folder, output_folder, x1, y1, x2, y2): # Ensure output folder exists if not os.path.exists(output_folder): os.makedirs(output_folder) # Process each PDF file in the input folder for filename in os.listdir(input_folder): if filename.endswith(".pdf"): input_pdf_path = os.path.join(input_folder, filename) output_png_path = os.path.join(output_folder, os.path.splitext(filename)[0] + ".png") output_pdf_path = os.path.join(output_folder, os.path.splitext(filename)[0] + ".pdf") with open(input_pdf_path, 'rb') as file: pdf_reader = PyPDF2.PdfReader(file) pdf_writer = PyPDF2.PdfWriter() for page_num in range(len(pdf_reader.pages)): page = pdf_reader.pages[page_num] page.cropbox.lower_left = (x1, y1) page.cropbox.upper_right = (x2, y2) pdf_writer.add_page(page) with open(output_pdf_path, 'wb') as output_file: pdf_writer.write(output_file) # Convert the first page to PNG format for visualization # first_page = Image.open(output_pdf_path) # first_page.save(output_png_path, 'PNG') # Specify input and output folders, and crop coordinates input_folder = '/home/lxy/data_link2/evaluate/clip/HU_Compare' output_folder = '/home/lxy/data_link2/evaluate/clip/HU_Compare2' x1, y1 = 50, 400 # Left bottom coordinates x2, y2 = 130, 550 # Right top coordinates # Call the function to crop and save PDF pages as PNG crop_and_save_pdf(input_folder, output_folder, x1, y1, x2, y2)