读取tiff图像&修改tiff 像素&保存tiff图像

package cn.xsbiz.servlet.test;

import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
import javax.imageio.stream.FileImageOutputStream;
import javax.media.jai.JAI;
import javax.media.jai.RenderedOp;

/**
 * (4条消息)Java实现图片(jpg/png)转成TIF格式(300dpi)踩坑笔记_KevinZc007的博客-优快云博客
 * https://blog.youkuaiyun.com/KevinZc007/article/details/82760515
 * 
 * [转] JAVA 利用jai包实现jpg/tif/bmp 等图片之间格式得互相转换 - Loeis.G - 博客园
 * https://www.cnblogs.com/gaorongyi/articles/5073539.html
 * 
 * 如何使用JAI在Java中使用TIFF渲染可以提高性能？ - 问答 - 云+社区 - 腾讯云
 * https://cloud.tencent.com/developer/ask/191603
 *
 */

public class Demo {

	public static void main(String[] args) throws Exception {
		System.out.println("处理数据开始：" + new SimpleDateFormat("yyyy.MM.dd HH:mm:ss:SSS").format(new Date()));

		String input = "infile\\\\XXX.tiff";
		String output = "outfile\\" + new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date()) + ".tiff";
		RenderedOp src = JAI.create("fileload", input);

		WritableRaster writableRaster = src.copyData();

		// 改变部分像素值
		for (int i = 0; i < writableRaster.getWidth() * writableRaster.getHeight()
				* writableRaster.getNumBands(); i++) {
			writableRaster.getDataBuffer().setElem(i, 255);
		}

		BufferedImage originalImage = src.getAsBufferedImage();

		BufferedImage bi = new BufferedImage(originalImage.getColorModel(), writableRaster,
				originalImage.isAlphaPremultiplied(), null);

		ImageWriter writer = ImageIO.getImageWritersByFormatName("tiff").next();
		writer.setOutput(new FileImageOutputStream(new File(output)));
		writer.write(bi);
		System.out.println("处理数据结束：" + new SimpleDateFormat("yyyy.MM.dd HH:mm:ss:SSS").format(new Date()));
	}

}