从imageReader写回修改后的图像 [英] Write back modified image from imageReader

问题描述

我从动画gif中读取分离的图像，我只需要在 frames [i] 中对它们进行更改，然后将它们设置为文件并用作为新文件保存。

 档案档案=新档案（gif1.gif）; 
 ImageReader reader = ImageIO.getImageReadersBySuffix（GIF）。next（）; 
 ImageInputStream in = ImageIO.createImageInputStream（file）; 
 reader.setInput（in）; 
 
文件输出=新文件（k.gif）; 
 
 ImageWriter writer = ImageIO.getImageWritersBySuffix（GIF）。next（）; 
 ImageOutputStream out = ImageIO.createImageOutputStream（file）; 
 writer.setOutput（out）; 
 
 int numImages = reader.getNumImages（true）; 
 BufferedImage [] frames = new BufferedImage [pocetObrazku]; （int i = 0; i< numImages; i ++）
 {
 
 BufferedImage image = reader.read（i）; 
 frames [i] = reader.read（i）; 
 
 $ / code $ / pre 
 
我很乐意提供任何帮助。$ b $坦克@StanislavL的链接（ https ：//community.oracle.com/thread/1264385 ）在评论中，这真的很有帮助。有我的解决方案：
 
 
  File file = new File（gif1.gif）; 
 ImageReader reader = ImageIO.getImageReadersBySuffix（GIF）。next（）; 
 ImageInputStream in = ImageIO.createImageInputStream（file）; 
 reader.setInput（in）; 
 
 int numImages = reader.getNumImages（true）; 
 BufferedImage [] frames = new BufferedImage [pocetObrazku]; 
 
文件fileOut = new File（k.gif）; 
 fileOut.createNewFile（）; 
 ImageWriter iw = ImageIO.getImageWritersByFormatName（gif）。next（）; 
 
 ImageOutputStream ios = ImageIO.createImageOutputStream（fileOut）; 
 iw.setOutput（ios）; 
 iw.prepareWriteSequence（null）; （int i = 0; i< numImages; i ++）{
 BufferedImage image = reader.read（i）; 
 
 
 frames [i] = reader.read（i）; 
 
 IIOMetadata metadata = reader.getImageMetadata（i）; 
 IIOImage ii = new IIOImage（image，null，metadata）; 
 iw.writeToSequence（ii，（ImageWriteParam）null）; 
} 
  
 
I read separated images from animated gif and I need just make change with them in frames[i] and then set them back to file and save with writer as new file. 
    File file = new File("gif1.gif");
    ImageReader reader = ImageIO.getImageReadersBySuffix("GIF").next();
    ImageInputStream in = ImageIO.createImageInputStream(file);
    reader.setInput(in);

    File output = new File("k.gif");

    ImageWriter writer = ImageIO.getImageWritersBySuffix("GIF").next();
    ImageOutputStream out = ImageIO.createImageOutputStream(file);
    writer.setOutput(out);

    int numImages = reader.getNumImages(true); 
    BufferedImage[] frames = new BufferedImage[pocetObrazku];

    for (int i = 0; i < numImages; i++)
    {

        BufferedImage image = reader.read(i);
        frames[i] = reader.read(i);        
    }    
I'll be glad for any help.
解决方案
Tanks @StanislavL for link (https://community.oracle.com/thread/1264385) in comment, it was really helpful. There is my solution:
File file = new File("gif1.gif");
ImageReader reader = ImageIO.getImageReadersBySuffix("GIF").next();
ImageInputStream in = ImageIO.createImageInputStream(file);
reader.setInput(in);

int numImages = reader.getNumImages(true); 
BufferedImage[] frames = new BufferedImage[pocetObrazku];

File fileOut = new File("k.gif");
fileOut.createNewFile();
ImageWriter iw = ImageIO.getImageWritersByFormatName("gif").next();

ImageOutputStream ios = ImageIO.createImageOutputStream(fileOut);
iw.setOutput(ios);
iw.prepareWriteSequence(null);

for (int i = 0; i < numImages ; i++) {
    BufferedImage image = reader.read(i);
    frames[i] = reader.read(i);

    IIOMetadata metadata = reader.getImageMetadata(i);    
    IIOImage ii = new IIOImage(image, null, metadata);      
    iw.writeToSequence(ii, (ImageWriteParam) null);    
}


                        
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