遇到错误compression error -2
。 如果有人能够提供一些指示,那就太好了
附上问题的PDF:
5_EN.pdf
错误信息:
Processing Pages: 1/28...mupdf: compression error -2
Traceback (most recent call last):
File "/Users/erikchan/Downloads/convert.py", line 10, in <module>
parse(pdf_files[i], docx_files[i])
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pdf2docx/main.py", line 31, in parse
cv.make_docx(indexes, multi_processing)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pdf2docx/converter.py", line 118, in make_docx
self._make_docx(page_indexes)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pdf2docx/converter.py", line 192, in _make_docx
self.initialize(page).parse().make_page(self.doc_docx)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pdf2docx/converter.py", line 172, in initialize
images, paths = self._paths_extractor.extract_paths(page)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pdf2docx/shape/Path.py", line 61, in extract_paths
image = largest.to_image(page) if largest.contains_curve else None
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pdf2docx/shape/Path.py", line 140, in to_image
return ImagesExtractor.clip_page(page, bbox, zoom)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pdf2docx/image/Image.py", line 60, in clip_page
return cls.to_raw_dict(image, bbox)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pdf2docx/image/Image.py", line 50, in to_raw_dict
'image': image.getPNGData()
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/fitz/fitz.py", line 5899, in getPNGData
barray = self._getImageData(1)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/fitz/fitz.py", line 5868, in _getImageData
return _fitz.Pixmap__getImageData(self, format)
RuntimeError: compression error -2
感谢您提供此案例。
许多矢量图形,即path
像一条线、曲线和它们的组合,存在于您的 pdf 中。 但是,由于从 pdf 中提取这些路径时的技术问题,当前该库会忽略剪切路径。 一些路径在没有被剪切的情况下超出页面,这导致了compression error -2
问题。
此外,转换这个pdf还有两个问题:
路径颜色不正确。 我想根本原因是目前只考虑了Device Color Space
(Gray/RGB/CMYK),而这个 pdf 样本可能遵循特殊的色彩空间,如Indexed CS
, DeviceN CS
。
重叠的图像被删除。 python-docx
用于编写转换后的 docx,但python-docx
现在不支持浮动元素。 因此,作为妥协,浮动图像被删除。
因此,不幸的是, pdf2docx
暂时无法转换您的 pdf。 至少应该做出以下努力:
感谢@dothinking的清晰解释。 我很惊讶这个库并没有比现在更受欢迎。 当前版本已经非常好,我知道很多人可以从中受益。
请让我知道我可以如何帮助解决您列出的任何问题(我需要一些指导。)无论是解决错误、测试还是其他问题。
非常感谢@echan00。
关于这个问题的一些进展:
PyMuPDF
发布了关于提取路径的新功能的好消息。 我会研究它,希望可以解决这个问题。之后,任何测试或建议表示赞赏。
2020-12-31 评论:最新的PyMuPDF 1.18.5 部分解决了这个问题,但并不完美,尤其是剪切路径。
由于python-docx
支持内嵌图像,因此探索浮动图像的步骤:
behind text
模式)xml结构结果:
<wp:inline>
下节点<w:drawing>
<wp:anchor>
下节点<w:drawing>
<wp:positionH>
和<wp:positionV>
来定义固定位置所以,这个想法是创建<wp:anchor>
节点,然后附加子节点:
<wp:positionH>
和<wp:positionV>
似乎带有python-docx
浮动图片是一个常见的请求,文档在这里共享。
# -*- coding: utf-8 -*-
'''
Implement floating image based on python-docx.
- Text wrapping style: BEHIND TEXT <wp:anchor behindDoc="1">
- Picture position: top-left corner of PAGE `<wp:positionH relativeFrom="page">`.
Create a docx sample (Layout | Positions | More Layout Options) and explore the
source xml (Open as a zip | word | document.xml) to implement other text wrapping
styles and position modes per `CT_Anchor._anchor_xml()`.
'''
from docx.oxml import parse_xml, register_element_cls
from docx.oxml.ns import nsdecls
from docx.oxml.shape import CT_Picture
from docx.oxml.xmlchemy import BaseOxmlElement, OneAndOnlyOne
# refer to docx.oxml.shape.CT_Inline
class CT_Anchor(BaseOxmlElement):
"""
``<w:anchor>`` element, container for a floating image.
"""
extent = OneAndOnlyOne('wp:extent')
docPr = OneAndOnlyOne('wp:docPr')
graphic = OneAndOnlyOne('a:graphic')
<strong i="7">@classmethod</strong>
def new(cls, cx, cy, shape_id, pic, pos_x, pos_y):
"""
Return a new ``<wp:anchor>`` element populated with the values passed
as parameters.
"""
anchor = parse_xml(cls._anchor_xml(pos_x, pos_y))
anchor.extent.cx = cx
anchor.extent.cy = cy
anchor.docPr.id = shape_id
anchor.docPr.name = 'Picture %d' % shape_id
anchor.graphic.graphicData.uri = (
'http://schemas.openxmlformats.org/drawingml/2006/picture'
)
anchor.graphic.graphicData._insert_pic(pic)
return anchor
<strong i="8">@classmethod</strong>
def new_pic_anchor(cls, shape_id, rId, filename, cx, cy, pos_x, pos_y):
"""
Return a new `wp:anchor` element containing the `pic:pic` element
specified by the argument values.
"""
pic_id = 0 # Word doesn't seem to use this, but does not omit it
pic = CT_Picture.new(pic_id, filename, rId, cx, cy)
anchor = cls.new(cx, cy, shape_id, pic, pos_x, pos_y)
anchor.graphic.graphicData._insert_pic(pic)
return anchor
<strong i="9">@classmethod</strong>
def _anchor_xml(cls, pos_x, pos_y):
return (
'<wp:anchor distT="0" distB="0" distL="0" distR="0" simplePos="0" relativeHeight="0" \n'
' behindDoc="1" locked="0" layoutInCell="1" allowOverlap="1" \n'
' %s>\n'
' <wp:simplePos x="0" y="0"/>\n'
' <wp:positionH relativeFrom="page">\n'
' <wp:posOffset>%d</wp:posOffset>\n'
' </wp:positionH>\n'
' <wp:positionV relativeFrom="page">\n'
' <wp:posOffset>%d</wp:posOffset>\n'
' </wp:positionV>\n'
' <wp:extent cx="914400" cy="914400"/>\n'
' <wp:wrapNone/>\n'
' <wp:docPr id="666" name="unnamed"/>\n'
' <wp:cNvGraphicFramePr>\n'
' <a:graphicFrameLocks noChangeAspect="1"/>\n'
' </wp:cNvGraphicFramePr>\n'
' <a:graphic>\n'
' <a:graphicData uri="URI not set"/>\n'
' </a:graphic>\n'
'</wp:anchor>' % ( nsdecls('wp', 'a', 'pic', 'r'), int(pos_x), int(pos_y) )
)
# refer to docx.parts.story.BaseStoryPart.new_pic_inline
def new_pic_anchor(part, image_descriptor, width, height, pos_x, pos_y):
"""Return a newly-created `w:anchor` element.
The element contains the image specified by *image_descriptor* and is scaled
based on the values of *width* and *height*.
"""
rId, image = part.get_or_add_image(image_descriptor)
cx, cy = image.scaled_dimensions(width, height)
shape_id, filename = part.next_id, image.filename
return CT_Anchor.new_pic_anchor(shape_id, rId, filename, cx, cy, pos_x, pos_y)
# refer to docx.text.run.add_picture
def add_float_picture(p, image_path_or_stream, width=None, height=None, pos_x=0, pos_y=0):
"""Add float picture at fixed position `pos_x` and `pos_y` to the top-left point of page.
"""
run = p.add_run()
anchor = new_pic_anchor(run.part, image_path_or_stream, width, height, pos_x, pos_y)
run._r.add_drawing(anchor)
# refer to docx.oxml.shape.__init__.py
register_element_cls('wp:anchor', CT_Anchor)
if __name__ == '__main__':
from docx import Document
from docx.shared import Inches, Pt
document = Document()
# add a floating image
p = document.add_paragraph()
add_float_picture(p, 'test.png', width=Inches(5.0), pos_x=Pt(20), pos_y=Pt(30))
# add text
p.add_run('Hello World'*50)
document.save('output.docx')
不错的@dothinking ,看起来您知道问题到底是什么。 我有各种各样的 PDF,一旦你准备好,我可以帮助测试
@dothinking 非常感谢您的代码示例! 完美解决我的问题!!!!
好久没时间做这个项目了。 新版本v0.5.0
现在可以部分解决这个问题:
PyMuPDF
支持路径提取,但对于复杂的形状(例如剪切路径)不太好。使用这个最新版本,示例pdf可以成功转换,但由于复杂/华丽的风格,仍然需要大量工作来提高转换后的docx文件的质量。
哇,这是一个伟大的升级。 非常感谢您的辛勤工作@dothinking
最有用的评论
似乎带有
python-docx
浮动图片是一个常见的请求,文档在这里共享。