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I'm trying to convert a multipage PDF file to image with PyMuPDF:

pdffile = "input.pdf"
doc = fitz.open(pdffile)
page = doc.loadPage()  # number of page
pix = page.getPixmap()
output = "output.tif"
pix.writePNG(output)

But I need to convert all the pages of the PDF file to a single image in multi-page tiff, when I give the page argument a page range, it just takes one page, does anyone know how I can do it?

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2 回答 2

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当您想要转换 PDF 的所有页面时，您需要一个 for 循环。此外，当您调用 时，您需要诸如基本上提高分辨率的.getPixmap()属性。matrix = mat这是代码片段（不确定这是否是您想要的，但这会将所有 PDF 转换为图像）：

doc = fitz.open(pdf_file)
zoom = 2 # to increase the resolution
mat = fitz.Matrix(zoom, zoom)
noOfPages = doc.pageCount
image_folder = '/path/to/where/to/save/your/images'

for pageNo in range(noOfPages):
    page = doc.loadPage(pageNo) #number of page
    pix = page.getPixmap(matrix = mat)
    
    output = image_folder + str(pageNo) + '.jpg' # you could change image format accordingly
    pix.writePNG(output)
    print('Converting PDFs to Image ... ' + output)
    # do your things afterwards

为了解决问题，这里有一个来自 Github 的很好的例子来演示它的含义以及如果需要它是如何用于您的案例的。

于 2020-10-13T21:27:57.787 回答
4 
import fitz
from PIL import Image

input_pdf = "input.pdf"
output_name = "output.tif"
compression = 'zip'  # "zip", "lzw", "group4" - need binarized image...

zoom = 2 # to increase the resolution
mat = fitz.Matrix(zoom, zoom)

doc = fitz.open(input_pdf)
image_list = []
for page in doc:
    pix = page.getPixmap(matrix = mat)
    img = Image.frombytes("RGB", [pix.width, pix.height], pix.samples)
    image_list.append(img)
    
if image_list:
    image_list[0].save(
        output_name,
        save_all=True,
        append_images=image_list[1:],
        compression=compression,
        dpi=(300, 300),
    )
于 2021-02-12T15:25:42.230 回答