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翻译完毕20180917 4 scanning tools for the Linux desktop.md
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4 scanning tools for the Linux desktop
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======
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Go paperless by driving your scanner with one of these open source applications.
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While the paperless world isn't here quite yet, more and more people are getting rid of paper by scanning documents and photos. Having a scanner isn't enough to do the deed, though. You need software to drive that scanner.
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But the catch is many scanner makers don't have Linux versions of the software they bundle with their devices. For the most part, that doesn't matter. Why? Because there are good scanning applications available for the Linux desktop. They work with a variety of scanners and do a good job.
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Let's take a look at four simple but flexible open source Linux scanning tools. I've used each of these tools (and even wrote about three of them [back in 2014][1]) and found them very useful. You might, too.
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### Simple Scan
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One of my longtime favorites, [Simple Scan][2] is small, quick, efficient, and easy to use. If you've seen it before, that's because Simple Scan is the default scanner application on the GNOME desktop, as well as for a number of Linux distributions.
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Scanning a document or photo takes one click. After scanning something, you can rotate or crop it and save it as an image (JPEG or PNG only) or as a PDF. That said, Simple Scan can be slow, even if you scan documents at lower resolutions. On top of that, Simple Scan uses a set of global defaults for scanning, like 150dpi for text and 300dpi for photos. You need to go into Simple Scan's preferences to change those settings.
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If you've scanned something with more than a couple of pages, you can reorder the pages before you save. And if necessary—say you're submitting a signed form—you can email from within Simple Scan.
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### Skanlite
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In many ways, [Skanlite][3] is Simple Scan's cousin in the KDE world. Skanlite has few features, but it gets the job done nicely.
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The software has options that you can configure, including automatically saving scanned files, setting the quality of the scan, and identifying where to save your scans. Skanlite can save to these image formats: JPEG, PNG, BMP, PPM, XBM, and XPM.
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One nifty feature is the software's ability to save portions of what you've scanned to separate files. That comes in handy when, say, you want to excise someone or something from a photo.
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### Gscan2pdf
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Another old favorite, [gscan2pdf][4] might be showing its age, but it still packs a few more features than some of the other applications mentioned here. Even so, gscan2pdf is still comparatively light.
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In addition to saving scans in various image formats (JPEG, PNG, and TIFF), gscan2pdf also saves them as PDF or [DjVu][5] files. You can set the scan's resolution, whether it's black and white or color, and paper size before you click the Scan button. That beats going into gscan2pdf's preferences every time you want to change any of those settings. You can also rotate, crop, and delete pages.
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While none of those features are truly killer, they give you a bit more flexibility.
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### GIMP
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You probably know [GIMP][6] as an image-editing tool. But did you know you can use it to drive your scanner?
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You'll need to install the [XSane][7] scanner software and the GIMP XSane plugin. Both of those should be available from your Linux distro's package manager. From there, select File > Create > Scanner/Camera. From there, click on your scanner and then the Scan button.
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If that's not your cup of tea, or if it doesn't work, you can combine GIMP with a plugin called [QuiteInsane][8]. With either plugin, GIMP becomes a powerful scanning application that lets you set a number of options like whether to scan in color or black and white, the resolution of the scan, and whether or not to compress results. You can also use GIMP's tools to touch up or apply effects to your scans. This makes it great for scanning photos and art.
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### Do they really just work?
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All of this software works well for the most part and with a variety of hardware. I've used them with several multifunction printers that I've owned over the years—whether connecting using a USB cable or over wireless.
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You might have noticed that I wrote "works well for the most part" in the previous paragraph. I did run into one exception: an inexpensive Canon multifunction printer. None of the software I used could detect it. I had to download and install Canon's Linux scanner software, which did work.
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What's your favorite open source scanning tool for Linux? Share your pick by leaving a comment.
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--------------------------------------------------------------------------------
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via: https://opensource.com/article/18/9/linux-scanner-tools
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作者：[Scott Nesbitt][a]
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选题：[lujun9972](https://github.com/lujun9972)
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://opensource.com/users/scottnesbitt
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[1]: https://opensource.com/life/14/8/3-tools-scanners-linux-desktop
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[2]: https://gitlab.gnome.org/GNOME/simple-scan
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[3]: https://www.kde.org/applications/graphics/skanlite/
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[4]: http://gscan2pdf.sourceforge.net/
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[5]: http://en.wikipedia.org/wiki/DjVu
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[6]: http://www.gimp.org/
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[7]: https://en.wikipedia.org/wiki/Scanner_Access_Now_Easy#XSane
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[8]: http://sourceforge.net/projects/quiteinsane/
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用于Linux桌面的4个扫描工具
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======
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使用其中一个开源软件驱动扫描仪来实现无纸化办公。
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尽管无纸化世界还没有到来，但越来越多的人通过扫描文件和照片来摆脱纸张的束缚。不过，仅仅拥有一台扫描仪还不足够。你还需要软件来驱动扫描仪。
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然而问题是许多扫描仪制造商没有将Linux版本的软件与他们的设备适配在一起。不过在大多数情况下，即使没有也没多大关系。因为在linux桌面上已经有很好的扫描软件了。它们能够与许多扫描仪配合很好的完成工作。
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现在就让我们看看四个简单又灵活的开源Linux扫描工具。我已经使用过了下面这些工具（甚至[早在2014年][1]写过关于其中三个工具的文章）并且觉得它们非常有用。希望你也会这样认为。
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### Simple Scan
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这是我最喜欢的一个软件之一，[Simple Scan][2]小巧，迅速，高效，且易于使用。如果你以前见过它，那是因为Simple Scan是GNOME桌面上的默认扫描程序应用程序，也是许多Linux发行版的默认扫描程序。
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你只需单击一下就能扫描文档或照片。扫描过某些内容后，你可以旋转或裁剪它并将其另存为图像（仅限JPEG或PNG格式）或PDF格式。也就是说Simple Scan可能会很慢，即使你用较低分辨率来扫描文档。最重要的是，Simple Scan在扫描时会使用一组全局的默认值，例如150dpi用于文本，300dpi用于照片。你需要进入Simple Scan的首选项才能更改这些设置。
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如果你扫描的内容超过了几页，还可以在保存之前重新排序页面。如果有必要的话 - 假如你正在提交已签名的表格 - 你可以使用Simple Scan来发送电子邮件。
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### Skanlite
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从很多方面来看，[Skanlite][3]是Simple Scan在KDE世界中的表兄弟。虽然Skanlite功能很少，但它可以出色的完成工作。
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你可以自己配置这个软件的选项，包括自动保存扫描文件，设置扫描质量以及确定扫描保存位置。 Skanlite可以保存为以下图像格式：JPEG，PNG，BMP，PPM，XBM和XPM。
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其中一个很棒的功能是Skanlite能够将你扫描的部分内容保存到单独的文件中。当你想要从照片中删除某人或某物时，这就派上用场了。
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### Gscan2pdf
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这是我另一个最爱的老软件，[gscan2pdf][4]可能会显得很老旧了，但它仍然包含一些比这里提到的其他软件更好的功能。即便如此，gscan2pdf仍然显得很轻便。
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除了以各种图像格式（JPEG，PNG和TIFF）保存扫描外，gscan2pdf还将它们保存为PDF或[DjVu][5]文件。你可以在单击“扫描”按钮之前设置扫描的分辨率，无论是黑白，彩色还是纸张大小，每当你想要更改任何这些设置时，这都会进入gscan2pdf的首选项。你还可以旋转，裁剪和删除页面。
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虽然这些都不是真正的杀手级功能，但它们会给你带来更多的灵活性。
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### GIMP
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你大概会知道[GIMP][6]是一个图像编辑工具。但是你恐怕不知道可以用它来驱动你的扫描仪吧。
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你需要安装[XSane][7]扫描软件和GIMP XSane插件。这两个应该都可以从你的Linux发行版的包管理器中获得。在软件里，选择文件>创建>扫描仪/相机。单击扫描仪，然后单击扫描按钮即可进行扫描。
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如果这不是你想要的，或者它不起作用，你可以将GIMP和一个叫作[QuiteInsane][8]的插件结合起来。使用任一插件，都能使GIMP成为一个功能强大的扫描软件，它可以让你设置许多选项，如是否扫描彩色或黑白，扫描的分辨率，以及是否压缩结果等。你还可以使用GIMP的工具来修改或应用扫描后的效果。这使得它非常适合扫描照片和艺术品。
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### 它们真的能够工作吗？
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所有的这些软件在大多数时候都能够在各种硬件上运行良好。我将它们与我过去几年来拥有的多台多功能打印机一起使用 - 无论是使用USB线连接还是通过无线连接。
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你可能已经注意到我在前一段中写过“大多数时候运行良好”。这是因为我确实遇到过一个例外：一个便宜的canon多功能打印机。我使用的软件都没有检测到它。最后我不得不下载并安装canon的Linux扫描仪软件才使它工作。
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你最喜欢的Linux开源扫描工具是什么？发表评论，分享你的选择。
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--------------------------------------------------------------------------------
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via: https://opensource.com/article/18/9/linux-scanner-tools
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作者：[Scott Nesbitt][a]
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选题：[lujun9972](https://github.com/lujun9972)
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译者：[way-ww](https://github.com/way-ww)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://opensource.com/users/scottnesbitt
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[1]: https://opensource.com/life/14/8/3-tools-scanners-linux-desktop
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[2]: https://gitlab.gnome.org/GNOME/simple-scan
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[3]: https://www.kde.org/applications/graphics/skanlite/
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[4]: http://gscan2pdf.sourceforge.net/
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[5]: http://en.wikipedia.org/wiki/DjVu
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[6]: http://www.gimp.org/
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[7]: https://en.wikipedia.org/wiki/Scanner_Access_Now_Easy#XSane
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[8]: http://sourceforge.net/projects/quiteinsane/
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