英文:
Scaling images with Apache Commons Imaging
问题
以下是翻译的内容：
我想要一种高质量的方式来缩放图像，特别是JPEG图像，使用Java。我在2007年左右进行了广泛的研究，当时JAI存在问题，会在某些缩放图像中产生黑色边框。
那时候，我最终采用了一种技术，使用Image.getScaledInstance()并结合Graphics2D渲染提示将其写入BufferedImage，这个技术是从Perry Nguyen描述的技术进行修改的。这种方法速度较慢，但生成的图像在质量上几乎与JAI子采样平均相同，但没有不正确的边框。
在重新研究这个问题时，我进行了一些快速的调查，但我没有看到比将近15年前的方法更好的方式来做到这一点。然而，我找到了Apache Commons Imaging，这是一个声称仅使用Java的新项目，因此很有前途。不幸的是，我找不到有关缩放图像的任何文档。
Apache Common Imaging是否处理图像的高质量缩放？如果是这样，我在哪里可以找到文档？
英文:
I would like a high-quality way to scale images, in particular JPEG images, using Java. I looked into this extensively around 2007, and at the time JAI had problems that would produce black borders in some scaled images.
Back then I finally settled on a technique of using Image.getScaledInstance() and writing to a BufferedImage with Graphics2D rendering hints, modified from a technique described by Perry Nguyen. This approach was slower, but produced images virtually identical in quality to JAI subsample average, but without the incorrect borders.
In revisiting this I did some quick research, but I don't see that there is any better way to do this than there was almost 15 years ago. However I did find Apache Commons Imaging, a new project that claims to only use Java, so it promising. Unfortunately I couldn't find any documentation on scaling images.
Does Apache Common Imaging handle high-quality scaling of images? If so, where can I find documentation?
答案1
得分: 1
请查看Patrick Favre的density-converter库。
这主要是一个面向移动系统（Android、iOS）的命令行和GUI图像处理工具。
即使您正在寻找一种将其与您的代码集成的方法，请查看ImageHandler类中执行的缩放机制实现，以及包中定义的不同算法at.favre.tools.dconvert.converters.scaling，我认为这可能会有所帮助。
英文:
Please, take a look at Patrick Favre's density-converter library.
It is mainly a command line and GUI image processing tool designed for mobile (Android, iOS) systems.
But even in the case you are looking for a way to integrate it with your code, please review the scaling mechanism implementation performed in the ImageHandler class and the different algorithms defined in the package at.favre.tools.dconvert.converters.scaling, I think it could be helpful.
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论