Question

在Java下，将TIF文件转换为PNG的最佳方法是什么？

简单是可取的，但如果最简单的方法是使用第三方库，那么我会考虑这个解决方案。

Answer 1

首先，安装JAI。然后安装JAI/ImageIO。然后做

public static void main(final String[] args) throws Exception
{
    final BufferedImage tif = ImageIO.read(new File("test.tif"));
    ImageIO.write(tif, "png", new File("test.png"));
}

Answer 2

使用像imageMagic这样的im4java java库，它们的性能和质量比JAI好得多

例如：

import org.im4java.core.ConvertCmd;
import org.im4java.core.IMOperation;

public static void convertTifToPng(File inputImage, File outputImage){
  IMOperation op = new IMOperation();
  op.addImage(); //place holder for input file
  op.addImage(); //place holder for output file

  ConvertCmd convert = new ConvertCmd();
  convert.run(op, new Object[]{inputImage.getAbsolutePath(), outputImage.getAbsolutePath()});
}

im4java的maven依赖是

<dependency>
  <groupId>im4java</groupId>
  <artifactId>im4java</artifactId>
  <version>0.98.0</version>
</dependency>

Answer 3

Java高级成像APi是一个很好的图像处理库

http://java.sun.com/products/java-media/jai/iio.html

Answer 4

下载JIMI软件开发工具包jimi1_0.zip并将JimiProClasses.zip设置为您的类路径

http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-java-client-419417.html#7259-jimi_sdk-1.0-oth-JPR

JIMI是较旧的java图像库，但它易于使用且没有平台相关代码（没有本机可执行文件，可以像标准jar一样使用它）

import java.awt.Image;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

import com.sun.jimi.core.Jimi;

public class JIMIImageConverter {

public static byte[] convert(byte[] inBytes, String inMimeType, String outMimeType) throws Exception{

    Image rawImage = Jimi.getImage(new ByteArrayInputStream(inBytes), inMimeType);
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    Jimi.putImage(outMimeType, rawImage, outputStream);
    return outputStream.toByteArray();

}

}

其中inMimeType和outMimeType是图形格式mimetypes

Answer 5

也许你可以使用这段代码，对我有用

import java.awt.Color;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.ParameterBlock;
import java.io.File;
import java.io.IOException;

import javax.media.jai.JAI;
import javax.media.jai.RenderedOp;

import com.sun.media.jai.codec.FileSeekableStream;
import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageDecoder;
import com.sun.media.jai.codec.SeekableStream;

public class ImageConvert {

    public static RenderedImage[] readMultiPageTiff(String fileName)throws IOException{
           File file = new File(fileName);
           SeekableStream seekableStream = new FileSeekableStream(file);
           ImageDecoder decoder = ImageCodec.createImageDecoder("tiff", seekableStream, null);
           int numPages = decoder.getNumPages();
           RenderedImage image[]= new RenderedImage[numPages];
           int count = 0;
           for(int i=0;i<decoder.getNumPages();i++){
               image[i] = decoder.decodeAsRenderedImage(i);
               count++;
           }

           String newFolderName;
           String s3 = fileName;
           String [] temp = null;
           temp = s3.split("\\.");


           int j;
               j = 0;
               do{
                     newFolderName = temp[j];
                     String spoonFeeding = newFolderName;
                     File f = new File(spoonFeeding);
                     f.mkdirs();
                     j++;
               }while (j<1);

           for (int i = 0; i < count; i++) {
               RenderedImage page = decoder.decodeAsRenderedImage(i);
               File fileObj = new File(newFolderName+"/" + (i+1) + ".png");
               System.out.println("Saving " + fileObj.getCanonicalPath());
               ParameterBlock parBlock = new ParameterBlock();
               parBlock.addSource(page);
               parBlock.add(fileObj.toString());
               parBlock.add("png");
               RenderedOp renderedOp = JAI.create("filestore",parBlock);
               renderedOp.dispose();
           }
           return image;
        }

}

如何在Java中将TIF转换为PNG？

5 个答案: