java 将图像转换为 BufferedImage
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Converting Image to BufferedImage
提问by kaysush
I'm having an image on disk. I want to convert it to a BufferedImage so that i can apply filters on it. Is there any way to do this?
我在磁盘上有一个图像。我想将其转换为 BufferedImage 以便我可以对其应用过滤器。有没有办法做到这一点？
回答by Pavel K.
use ImageIO.read(File). It returns BufferedImage :
使用ImageIO.read(File)。它返回 BufferedImage ：
BufferedImage image = ImageIO.read(new File(filename));
回答by Rahul Agrawal
Try this, Use class "javax.imageio.ImageIO" like
试试这个，使用类“javax.imageio.ImageIO”
BufferedImage originalImage = ImageIO.read(new File("c:\image\mypic.jpg"));
Also refer this link
另请参阅此链接
回答by Kierrow
The safest way to convert a regular Imageto a BufferedImageis just creating a new BufferedImageand painting the Imageon it, like so:
最安全的方式转换成一个普通Image的BufferedImage只是创建一个新的BufferedImage和画Image就可以了，就像这样：
Image original = ...;
BufferedImage b_img = new BufferedImage(original.getWith(), original.getHeight(), BufferedImage.TYPE_4BYTE_ARGB);
// or use any other fitting type
b_img.getGraphics().drawImage(original, 0, 0, null);
This may not be the best way regarding performance, but it is sure to always work.
这可能不是关于性能的最佳方式，但它肯定会始终有效。
回答by K_Anas
Java 2D? supports loading these external image formats into its BufferedImageformat using its Image I/O APIwhich is in the javax.imageiopackage. Image I/O has built-in support for GIF, PNG, JPEG, BMP, and WBMP.
Java 2D？支持使用包中的BufferedImage格式将这些外部图像格式加载到其BufferedImage格式Image I/O API中javax.imageio。Image I/O 内置了对 GIF、PNG、JPEG、BMP 和 WBMP 的支持。
To load an image from a specific file use the following code:
要从特定文件加载图像，请使用以下代码：
BufferedImage img = null;
try {
img = ImageIO.read(new File("image.jpg"));
} catch (IOException e) {
e.printStackTrace()
}
回答by Sumit Singh
To load an image from a specific file use the following code:
read more Reading/Loading an Image.
Working with Images
要从特定文件加载图像，请使用以下代码：
阅读更多阅读/加载图像。
处理图像
BufferedImage img = null;
try {
img = ImageIO.read(new File("your/image/path/name.jpg"));
} catch (IOException e) {
// handle exception
}
