BufferedImage to array

Question

将缓冲图像转换为整数数组有什么好处？我假设我可以操纵数组并交叉处理图片。就是这样吗？

Answer 1

I think you are referring to getRgb() method of BufferedImage class.

Supposing you want to modify the whole image or a big portion of it, retrieving the pixel array, and perform operations on it could be considerely faster than accessing each single pixel through method calls such as setRgb() .

Answer 2

SwingX introduces the AbstractFilter class for BufferedImage. Here is an example:

• http://www.jarvana.com/jarvana/view/org/swinglabs/swingx/0.9/swingx-0.9-sources.jar!/org/jdesktop/swingx/image/GaussianBlurFilter.java?format=ok

For simple editing use one of this examples:

• http://www.exampledepot.com/egs/java.awt.image/imagepixel.html
• Buffered image pixel manipulation
• How do I create a BufferedImage from array containing pixels?

Answer 3

将BufferedImage作为int值数组存入内存可以帮助您通过将int值处理到内存中然后将结果设置回另一个BufferedImage来对图像应用过滤器。