1.图像模糊(Image Blur)
在Java中,你可以通过处理图像像素来实现图像模糊。常用的图像模糊算法是高斯模糊算法,它通过对图像中的每个像素及其周围像素进行加权平均来实现模糊效果。下面是一个简单的Java代码示例,演示如何对图像进行高斯模糊:
首先,你需要导入以下Java类和包:
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
然后,你可以使用以下方法对图像进行高斯模糊:
public class ImageBlur {
public static void main(String[] args) {
try {
BufferedImage image = ImageIO.read(new File("path_to_your_image.jpg"));
BufferedImage blurredImage = applyGaussianBlur(image, 5); // 5是模糊半径,可以根据需要调整
File outputImageFile = new File("output_blurred_image.jpg");
ImageIO.write(blurredImage, "jpg", outputImageFile);
System.out.println("图像模糊成功并保存在output_blurred_image.jpg");
} catch (IOException e) {
e.printStackTrace();
}
}
public static BufferedImage applyGaussianBlur(BufferedImage sourceImage, int radius) {
int width = sourceImage.getWidth();
int height = sourceImage.getHeight();
BufferedImage blurredImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
float[] matrix = new float[radius * radius];
float sigma = radius / 3.0f;
float twoSigmaSquare = 2.0f * sigma * sigma;
float sigmaRoot = (float) Math.sqrt(twoSigmaSquare * Math.PI);
float total = 0.0f;
int index = 0;
for (int y = -radius; y 16) & 0xFF) * matrix[(j + radius) * radius + (i + radius)];
green += ((rgb >> 8) & 0xFF) * matrix[(j + radius) * radius + (i + radius)];
blue += (rgb & 0xFF) * matrix[(j + radius) * radius + (i + radius)];
}
}
int blurredRGB = (alpha