java 如何模糊图像？
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How do I blur an image?
提问by zero juan
I'm trying to implement a blurring mechanic on a java game. How do I create a blur effect on runtime?
我正在尝试在 Java 游戏中实现模糊机制。如何在运行时创建模糊效果？
回答by Dean J
Google "Gaussian Blur", try this: http://www.jhlabs.com/ip/blurring.html
谷歌“高斯模糊”，试试这个： http://www.jhlabs.com/ip/blurring.html
回答by JonoW
Read about/Google "Convolution Filters", it's a method of changing a pixels value based on the values of pixels around it. So apart from blurring, you can also do image sharpening and line-finding.
阅读/谷歌“卷积过滤器”，这是一种根据周围像素值更改像素值的方法。因此，除了模糊之外，您还可以进行图像锐化和寻线。
回答by Paul
If you are doing java game development, I'm willing to bet you are using java2d.
如果您从事 Java 游戏开发，我敢打赌您使用的是 java2d。
You want to create a convolution filter like so:
你想像这样创建一个卷积过滤器：
// Create the kernel.
kernel = new KernelJAI
float[] = { 0.0F, -1.0F, 0.0F,
-1.0F, 5.0F, -1.0F,
0.0F, -1.0F, 0.0F };
// Create the convolve operation.
blurredImage = JAI.create("convolve", originalImage, kernel);
You can find more information at: http://java.sun.com/products/java-media/jai/forDevelopers/jai1_0_1guide-unc/Image-enhance.doc.html#51172(which is where the code is from too)
您可以在以下位置找到更多信息：http: //java.sun.com/products/java-media/jai/forDevelopers/jai1_0_1guide-unc/Image-enhance.doc.html#51172（这也是代码的来源）
