将pdf转换为图像，但放大后 [英] converting pdf to image but after zooming in

问题描述

此链接显示了pdf s可以转换为图像.有没有办法在转换为图像之前缩放pdf?在我的项目中，我将pdf s转换为png s，然后使用Python-tesseract库提取文本.我注意到，如果我缩放pdf s并将零件另存为png s，那么OCR会提供更好的结果.那么有没有办法在转换为png之前先缩放pdf?

This link shows how pdfs could be converted to images. Is there a way to zoom my pdfs before converting to images? In my project, i am converting pdfs to pngs and then using Python-tesseract library to extract text. I noticed that if I zoom pdfs and then save parts as pngs then OCR provides much better results. So is there a way to zoom pdfs before converting to pngs?

推荐答案

我认为提高图像的质量(分辨率)比放大pdf更好.

I think that raising the quality (resolution) of your image is a better solution than zooming into the pdf.

使用pdf2image您可以轻松完成此操作:

using pdf2image you can accomplish this quite easily:

安装pdf2image:pip install pdf2image

install pdf2image: pip install pdf2image

然后在python中将您的pdf转换为高质量的图像:

then, in python, convert your pdf into a high quality image:

from pdf2image import convert_from_path

pages = convert_from_path('sample.pdf', 400) #400 is the Image quality in DPI (default 200)

pages[0].save("sample.png")

通过使用quality参数，您应该得到想要的结果

by playing around with the quality parameter you should get the result you desider

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