有没有实用的工具可以修改(用橡皮擦和笔)内容是扫描文档或数码相机拍摄的图片的pdf文件?如果是的话,哪一个好?
答案1
答案2
pdf图像是一个提取图像的程序:
NAME
pdfimages - Portable Document Format (PDF) image extractor (version 3.00)
SYNOPSIS
pdfimages [options] PDF-file image-root
DESCRIPTION
Pdfimages saves images from a Portable Document Format (PDF) file as Portable Pixmap (PPM), Portable Bitmap (PBM), or JPEG files.
Pdfimages reads the PDF file PDF-file, scans one or more pages, and writes one PPM, PBM, or JPEG file for each image, image-root-
nnn.xxx, where nnn is the image number and xxx is the image type (.ppm, .pbm, .jpg).
pdfimages --help
pdfimages version 0.12.4
Copyright 2005-2009 The Poppler Developers - http://poppler.freedesktop.org
Copyright 1996-2004 Glyph & Cog, LLC
Usage: pdfimages [options] <PDF-file> <image-root>
-f <int> : first page to convert
-l <int> : last page to convert
-j : write JPEG images as JPEG files
-opw <string> : owner password (for encrypted files)
-upw <string> : user password (for encrypted files)
-q : don't print any messages or errors
-v : print copyright and version info
-h : print usage information
-help : print usage information
--help : print usage information
-? : print usage information
pdftopppm是另一个:
NAME
pdftoppm - Portable Document Format (PDF) to Portable Pixmap (PPM) converter (version 3.00)
SYNOPSIS
pdftoppm [options] PDF-file PPM-root
DESCRIPTION
Pdftoppm converts Portable Document Format (PDF) files to color image files in Portable Pixmap (PPM) format, grayscale image
files in Portable Graymap (PGM) format, or monochrome image files in Portable Bitmap (PBM) format.
Pdftoppm reads the PDF file, PDF-file, and writes one PPM file for each page, PPM-root-nnnnnn.ppm, where nnnnnn is the page num‐
ber.
如前所述,您可以尝试使用图形处理软件打开 PDF。
作为最后的后备措施,您可以显示 PDF、截取屏幕截图并进行处理。
答案3
要修改内容为扫描文档的 pdf 文件,您可以安装期刊在您的系统上。
如果您有基于 Debian 或 Ubuntu 的系统,请打开终端并输入此命令 L sudo apt-get install xournal
,或者通过 synaptic 软件包管理器安装它。对于 Fedora,请使用sudo yum install xournal
.