如何将tif转换成png或jpg

sz652 2008-11-12 10:55:39

jimi下载地址:
http://java.sun.com/products/jimi/

我使用的是jimi1.0但是转换大的tif时会出错,内存溢出.
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
原本195K的tif只有一页,转换成png后大小为1377kb

如需源tif文件的请发邮件到lwl@cgrs.com.cn

各位大哥帮帮忙啊,小弟现在实在是没分....

public static void main(String[] args) throws JimiException, IOException
{
String strfile="F:\\TiffConvert\\963347528002OR.tif";
//String strfile = "f:\\TiffConvert\\705221558.tif";

toPNG(strfile, "f:\\TiffConvert\\0003", 10);

changeDimension("f:\\TiffConvert\\0003.png", "f:\\TiffConvert\\0003_new.png", 0.9);

}

public static void toPNG(String source, String dest, int quality)
{
if (dest == null || dest.trim().equals(""))
dest = source;
if (!dest.toLowerCase().trim().endsWith("png"))
{
dest += ".png";
System.out.println("Overriding to JPG, output file: " + dest);
}
if (quality < 0 || quality > 100 || (quality + "") == null || (quality + "").equals(""))
{
System.out.println("quality must between ’0’ and ’100’");
System.out.println("set to DEFAULT value:’75’");
quality = 75;
}
try
{
JPGOptions options = new JPGOptions();
options.setQuality(quality);
ImageProducer image = Jimi.getImageProducer(source);
//System.out.println();

JimiWriter writer = Jimi.createJimiWriter(dest);
writer.setSource(image);
writer.setOptions(options);
writer.putImage(dest);
} catch (JimiException je)
{
System.err.println("Error: " + je);
}
}

public static void changeDimension(String source, String desc, double ins) throws JimiException, IOException
{
File _file = null;
if (desc == null || desc.trim().equals(""))
{
desc = source;
}
_file = new File(source); // 读入文件
ImageInputStream iis=new FileImageInputStream(_file);
//javax.imageio.ImageIO.setUseCache(true);
//Image src = javax.imageio.ImageIO.read(_file); // 构造Image对象
//BufferedImage src = ImageIO.read(_file); // 构造Image对象
BufferedImage src = ImageIO.read(iis);
double wideth = (double) src.getWidth(null); // 得到源图宽
double height = (double) src.getHeight(null); // 得到源图长
int iWideth = (int) (wideth * ins);
int iHeight = (int) (height * ins);
BufferedImage tag = new BufferedImage(iWideth, iHeight, BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src, 0, 0, iWideth, iHeight, null); // 绘制缩小后的图
if (!source.trim().equals(desc))
_file.deleteOnExit();

JimiWriter writer = Jimi.createJimiWriter(desc);
writer.setSource(tag);
writer.putImage(desc);

}

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