使用Java进行图像处理 [英] Image manipulation using java

问题描述

我正在尝试创建一个程序来生成用作多屏背景的图像，我针对的是Windows(在我的情况下为7，因此基本上我可以更改图像而不会看到相同的图像)在两个不同的屏幕上)

i'm trying to create a program that generates images for use as multi-screen backgrounds, i'm doing this targeted at windows (in my case, 7 so that basically i can get images to change without seeing the same image on two different screens)

在我的程序中，我读取了多个图像输入文件，并将它们编译成一个输出图像，该图像等于桌面的总大小(包括屏幕上看不到的黑色区域)

in my program, i read multiple image input files and compile them into a single output image that is the total size of the desktop (including black areas not seen on screens)

我的问题是，什么类/方法适合于裁剪/调整大小/粘贴到Java中的新图像中，因为我遇到了太多的图像操作类，它们似乎都做不到一件事.

my question is, what class/methods are good for cropping/resizing/pasting into a new image in java because i'm coming across so many image manipulation classes and they all seem to do one tiny thing.

除了调整大小或裁剪以外，我不会修改任何图像并将其放置在新(最初为空白)图像中的某个位置.

i will not be modifying any of the images beyond resize or crop and putting it into a certain position in the new (initially blank) image.

代码可以提供，因为我计划在以后的某个时间点将其发布给可能喜欢/需要它的人.

code can be made available as i plan to release it at some later point for whoever may like/need it.

预先感谢您，如果这个问题已得到回答，我深表歉意，但我还是四处看看.

thank you in advance, if this question has been answered, my apologies but i DID have a look around.

推荐答案

我不知道这是否是最好的方法，但这很简单:

I do not know if this is the best method, but it is quite easy:

// load an image
Image image = javax.imageio.ImageIO.read(new File("someimage.png");
// resize it
image = image.getScaledInstance(100, 100, Image.SCALE_SMOOTH);
// create a new image to render to
BufferedImage newimg = new BufferedImage(200,100,BufferedImage.TYPE_INT_ARGB);
// get graphics to draw..
Graphics2D graphics =newimg.createGraphics();
//draw the other image on it
graphics.drawImage(image,0,0,null);
graphics.drawImage(image,100,0,null);
graphics.fillOval(20,20,40,40); //making it a bit ugly ;)
//export the new image
ImageIO.write(newimg,"png",new File("output.png"));
//done!

为简单起见，我放弃了所有检查，异常处理等.

For simplicity I dropped all checks, exception handling, etc.

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