上代码：
maven依赖
<dependencies>
<!-- https://mvnrepository.com/artifact/javax.media/jai-core -->
<dependency>
<groupId>javax.media</groupId>
<artifactId>jai-core</artifactId>
<version>1.1.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.media/jai_codec -->
<dependency>
<groupId>javax.media</groupId>
<artifactId>jai_codec</artifactId>
<version>1.1.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.media/jai_imageio -->
<dependency>
<groupId>javax.media</groupId>
<artifactId>jai_imageio</artifactId>
<version>1.1</version>
</dependency>
</dependencies>
读取图片：
File file = new File(path);
//读取tif图片
ImageReader reader = ImageIO.getImageReadersByFormatName("tiff").next();
FileImageInputStream inputStream = new FileImageInputStream(file);
reader.setInput(inputStream);
return reader.read(0);
绘制图片：
//将结果画出来
ImageWriter writer = ImageIO.getImageWritersByFormatName("tiff").next();
writer.setOutput(new FileImageOutputStream(new File("./output.tif")));
writer.write(originalImage);
获取图像属性值：
image.getRGB(x, y);
int width = originalImage.getWidth();
int height = originalImage.getHeight();
int minX = originalImage.getMinX();
int minY = originalImage.getMinY();
注意事项：打jar包后无法运行，需要修改MANIFEST
或者修改maven打包参数
Solution
Include the following lines in your MANIFEST.MF file:
Specification-Title: Java Advanced Imaging Image I/O Tools
Specification-Version: 1.1
Specification-Vendor: Sun Microsystems, Inc.
Implementation-Title: com.sun.media.imageio
Implementation-Version: 1.1
Implementation-Vendor: Sun Microsystems, Inc.
The values for each property can be anything (I used my specific application/version/company), as long as all six are defined.
maven打包参数
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5.5</version>
<configuration>
<archive>
<manifest>
<mainClass>com.fly.image.Processor</mainClass>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
<addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
</manifest>
<manifestEntries>
<Specification-Vendor>MyCompany</Specification-Vendor>
<Implementation-Vendor>MyCompany</Implementation-Vendor>
</manifestEntries>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
一个Tif多图按照类型权重取最大值程序：
package com.fly.image;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.ImageWriter;
import javax.imageio.spi.IIORegistry;
import javax.imageio.stream.FileImageInputStream;
import javax.imageio.stream.FileImageOutputStream;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class Processor {
static ArrayList<PixelInfoList> dataList = new ArrayList<>(1024);
static ArrayList<ImageWithWeight> imageList = new ArrayList<>();
public static void main(String[] args) throws IOException {
BufferedReader scan = new BufferedReader(new InputStreamReader(System.in ));
System.out.println("请输入要处理的图片数目，按回车确认：");
int n = Integer.parseInt(scan.readLine());
for (int i = 0; i < n; i++) {
System.out.println("输入第 " + (i + 1) + " 张图片的路径，按回车确认：");
String path = scan.readLine();
System.out.println("输入第 " + (i + 1) + " 张图片的权重，按回车确认：");
double weight = Double.parseDouble(scan.readLine());
BufferedImage image = readTifFile(path);
imageList.add(new ImageWithWeight(image, weight));
}
scan.close();
if (imageList.isEmpty()) {
System.out.println("未发现图片，退出...");
return;
}
BufferedImage originalImage = imageList.get(0).image;
int width = originalImage.getWidth();
int height = originalImage.getHeight();
int minX = originalImage.getMinX();
int minY = originalImage.getMinY();
int imageSize = width * height;
System.out.println("图片参数： width=" + width + ",height=" + height + ".");
//初始化数组
dataList.ensureCapacity(imageSize);
//开始读取图片像素，将像素信息放入数组中
for (int i = minX; i < width; i++) {
for (int j = minY; j < height; j++) {
PixelInfoList pixelInfoList = new PixelInfoList(i, j);
for (ImageWithWeight iw : imageList) {
//获取像素颜色值
int pixel = iw.getPixel(i, j);
PixelType pixelType = new PixelType(pixel, iw.weight);
pixelInfoList.list.add(pixelType);
}
dataList.add(pixelInfoList);
}
}
HashMap<Integer, Double> map = new HashMap<>();
//开始计算各个像素的加权最优值
dataList.forEach(pixelInfo -> {
map.clear();
pixelInfo.list.forEach(pixel -> map.compute(pixel.type, (k, v) -> v == null ? pixel.weight : v + pixel.weight));
List<Map.Entry<Integer, Double>> collect = map.entrySet()
.stream()
.sorted((a, b) -> a.getValue() - b.getValue() > 0 ? -1 : 1)
.collect(Collectors.toList());
originalImage.setRGB(pixelInfo.x, pixelInfo.y, collect.get(0).getKey());
});
//将结果画出来
ImageWriter writer = ImageIO.getImageWritersByFormatName("tiff").next();
writer.setOutput(new FileImageOutputStream(new File("./output.tif")));
writer.write(originalImage);
}
//读取tif文件
private static BufferedImage readTifFile(String path) throws IOException {
File file = new File(path);
//读取tif图片
ImageReader reader = ImageIO.getImageReadersByFormatName("tiff").next();
FileImageInputStream inputStream = new FileImageInputStream(file);
reader.setInput(inputStream);
return reader.read(0);
}
}
/************************************************************/
package com.fly.image;
public class PixelType {
int type;
double weight;
public PixelType(int type, double weight) {
this.type = type;
this.weight = weight;
}
@Override
public String toString() {
return "PixelType{" +
"type=" + type +
", weight=" + weight +
'}';
}
}
/********************************************************************/
package com.fly.image;
import java.util.ArrayList;
public class PixelInfoList {
ArrayList<PixelType> list = new ArrayList<>();
int x;
int y;
public PixelInfoList(int x, int y) {
this.x = x;
this.y = y;
}
public PixelInfoList() {
}
}
/*********************************************************/
package com.fly.image;
import java.awt.image.BufferedImage;
public class ImageWithWeight {
BufferedImage image;
double weight;
public ImageWithWeight(BufferedImage image, double weight) {
this.image = image;
this.weight = weight;
}
public int getPixel(int x, int y) {
return this.image.getRGB(x, y);
}
@Override
public String toString() {
return "ImageWithWeight{" +
"image=" + image +
", weight=" + weight +
'}';
}
}
maven配置
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.fly</groupId>
<artifactId>image</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5.5</version>
<configuration>
<archive>
<manifest>
<mainClass>com.fly.image.Processor</mainClass>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
<addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
</manifest>
<manifestEntries>
<Specification-Vendor>MyCompany</Specification-Vendor>
<Implementation-Vendor>MyCompany</Implementation-Vendor>
</manifestEntries>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<!-- https://mvnrepository.com/artifact/javax.media/jai-core -->
<dependency>
<groupId>javax.media</groupId>
<artifactId>jai-core</artifactId>
<version>1.1.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.media/jai_codec -->
<dependency>
<groupId>javax.media</groupId>
<artifactId>jai_codec</artifactId>
<version>1.1.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.media/jai_imageio -->
<dependency>
<groupId>javax.media</groupId>
<artifactId>jai_imageio</artifactId>
<version>1.1</version>
</dependency>
</dependencies>
</project>
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