java 图片偏斜矫正
时间: 2023-11-20 15:56:26 浏览: 39
以下是Java图片偏斜矫正的示例代码:
```java
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class TiltImage {
public static void main(String[] args) throws IOException {
// 读取图片
String imagePath = "cow.jpg";
BufferedImage image = ImageIO.read(new File(imagePath));
// 计算旋转角度
double angle = getAngle(image);
// 旋转图片
Image rotatedImage = rotateImage(image, angle);
// 保存图片
String outputImagePath = "cow_rotated.jpg";
ImageIO.write(toBufferedImage(rotatedImage), "jpg", new File(outputImagePath));
}
/**
* 获取图片旋转角度
*/
private static double getAngle(BufferedImage image) {
// TODO: 实现获取图片旋转角度的算法
return 0;
}
/**
* 旋转图片
*/
private static Image rotateImage(BufferedImage image, double angle) {
AffineTransform transform = new AffineTransform();
transform.rotate(Math.toRadians(angle), image.getWidth() / 2, image.getHeight() / 2);
Image rotatedImage = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_RGB);
Graphics2D g = (Graphics2D) rotatedImage.getGraphics();
g.drawImage(image, transform, null);
return rotatedImage;
}
/**
* 将Image对象转换为BufferedImage对象
*/
private static BufferedImage toBufferedImage(Image image) {
if (image instanceof BufferedImage) {
return (BufferedImage) image;
}
BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_RGB);
Graphics2D g = bufferedImage.createGraphics();
g.drawImage(image, 0, 0, null);
g.dispose();
return bufferedImage;
}
}
```
上述代码中,我们首先读取了一张图片,然后计算出图片的旋转角度,接着旋转图片并保存。其中,`getAngle()`方法需要实现获取图片旋转角度的算法,这里需要根据具体的需求进行实现。