python批量添加盖章pdf
时间: 2023-11-08 22:59:31 浏览: 269
要实现Python批量添加盖章到PDF文件的功能,可以按照以下步骤进行操作:
1. 首先,确保已安装相关依赖。可以使用以下命令安装所需依赖:
```
pip install pdf2image img2pdf opencv-python
```
2. 导入必要的包:
```python
from pdf2image import convert_from_path
import img2pdf
import cv2
import os
```
3. 定义一个函数,用于将图片形式转换为PDF的函数:
```python
def jpg_to_pdf(inputfile, outputfile):
with open('output/' + outputfile, 'wb') as f:
f.write(img2pdf.convert(inputfile))
print('ok')
```
4. 遍历需要进行盖章的PDF文件,并将其转换为图片:
```python
def add_stamp_to_pdf(pdf_folder, stamp_image, output_folder):
for file in os.listdir(pdf_folder):
if file.endswith(".pdf"):
pdf_path = os.path.join(pdf_folder, file)
images = convert_from_path(pdf_path)
for i, image in enumerate(images):
image.save("output/page_" + str(i) + ".jpg", "JPEG")
```
5. 使用OpenCV库将盖章图片添加到PDF文件的每个页面:
```python
def add_stamp_to_pdf(pdf_folder, stamp_image, output_folder):
for file in os.listdir(pdf_folder):
if file.endswith(".pdf"):
pdf_path = os.path.join(pdf_folder, file)
images = convert_from_path(pdf_path)
for i, image in enumerate(images):
image.save("output/page_" + str(i) + ".jpg", "JPEG")
page_image = cv2.imread("output/page_" + str(i) + ".jpg")
stamp = cv2.imread(stamp_image)
# 在page_image上添加盖章
# ...
cv2.imwrite("output/page_" + str(i) + ".jpg", page_image)
```
6. 最后,将处理后的图片转换回PDF文件:
```python
def add_stamp_to_pdf(pdf_folder, stamp_image, output_folder):
for file in os.listdir(pdf_folder):
if file.endswith(".pdf"):
pdf_path = os.path.join(pdf_folder, file)
images = convert_from_path(pdf_path)
for i, image in enumerate(images):
image.save("output/page_" + str(i) + ".jpg", "JPEG")
page_image = cv2.imread("output/page_" + str(i) + ".jpg")
stamp = cv2.imread(stamp_image)
# 在page_image上添加盖章
# ...
cv2.imwrite("output/page_" + str(i) + ".jpg", page_image)
jpg_to_pdf("output/page_*.jpg", "output/stamped_" + file.replace(".pdf", "") + ".pdf")
```
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