测试照片: 一个场景拍两张视角轻微偏移的照片, 比如书上的文字

用途: 判断摄像机是否偏移视角等等

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.URL;public class MergeTwoImgUtil {public static void main(String[] args) throws Exception {BufferedImage img1 = getImageByPath("E:\\t1.jpg");BufferedImage img2 = getImageByPath("E:\\t2.jpg");merge2File(img1, img2, "E:\\t1_t2.png");}public static ByteArrayOutputStream merge2Stream(BufferedImage image1, BufferedImage image2) {return merge(image1, image2);}public static void merge2File(BufferedImage image1, BufferedImage image2, String savePath) {try (FileOutputStream fileOutputStream = new FileOutputStream(savePath);) {ByteArrayOutputStream merge = merge(image1, image2);merge.writeTo(fileOutputStream);fileOutputStream.flush();} catch (Exception e) {e.printStackTrace();}}private static ByteArrayOutputStream merge(BufferedImage image1, BufferedImage image2) {try {// 加载第二个图片// 替换为第二个图片的路径// 创建一个与图片大小相同的透明图片BufferedImage blendedImage = new BufferedImage(896, 476, BufferedImage.TYPE_INT_ARGB);// 创建Graphics2D对象并绘制第一个图片Graphics2D g2d = blendedImage.createGraphics();g2d.drawImage(image1, 0, 0, null);// 设置透明度为50%AlphaComposite transparency = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f);g2d.setComposite(transparency);// 绘制第二个图片g2d.drawImage(image2, 0, 0, null);// 保存合并后的图片ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();ImageIO.write(blendedImage, "png", byteArrayOutputStream);  // 保存路径和文件名// 清除Graphics2D对象g2d.dispose();return byteArrayOutputStream;} catch (Exception e) {e.printStackTrace();return null;}}public static BufferedImage getImageByPath(String filePath) throws Exception {InputStream imageStream = new FileInputStream(filePath);return ImageIO.read(imageStream);}public static BufferedImage getImageByUrl(String imgUrl) throws Exception {InputStream imageStream = null;URL url = new URL(imgUrl);imageStream = url.openStream();return ImageIO.read(imageStream);}
}