使用平滑模糊图像的 Java 程序
模糊是一个简单而常用的图像处理操作。它也被称为平滑。图像的平滑从图像中去除有噪声的像素，并对图像应用低通滤波器。低通滤波器意味着从图像中去除噪声，同时保持图像的大部分不被损坏。最常见的滤波器类型是线性滤波器。在线性滤波器中，输入像素值的加权和决定输出像素值。
先决条件:
执行操作所需的类:
- 要读写图像文件，我们必须导入文件类[import Java . io . File；].这个类通常表示文件和目录路径名。
- 为了处理错误，我们使用 IOException 类【导入 Java . io . IOException；]
- 为了保存图像，我们使用 BufferedImage 类[import Java . awt . image . BufferedImage；].该对象用于在内存中存储图像。
- 为了执行图像读写操作，我们将导入 ImageIO 类【导入 javax . ImageIO . ImageIO；].这个类有读写图像的静态方法。
进场:
- 以 2D 矩阵平滑图像的每个像素
- 使用 BufferedImage 类和 Color c 的一些内置方法
实施:
例
Java 语言(一种计算机语言，尤用于创建网站)
// Java Program to Blur Image using Smoothing
// Importing required packages
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
// Main class
public class GFG {
// Main driver method
public static void main(String[] args)
throws IOException, InterruptedException
{
Color color[];
// Creating a File class object to
// read the image in the form of file from directory
// Directory path is passed as an argument
File fin = new File("D:/test/Image.jpeg");
// Now object of BufferedImage class is created to
// convert file into into image form
BufferedImage input = ImageIO.read(fin);
// Again creating an object of BufferedImage to
// create output Image
BufferedImage output = new BufferedImage(
input.getWidth(), input.getHeight(),
BufferedImage.TYPE_INT_RGB);
// Setting dimensions for the image to be processed
int i = 0;
int max = 400, rad = 10;
int a1 = 0, r1 = 0, g1 = 0, b1 = 0;
color = new Color[max];
// Now this core section of code is responsible for
// blurring of an image
int x = 1, y = 1, x1, y1, ex = 5, d = 0;
// Running nested for loops for each pixel
// and blurring it
for (x = rad; x < input.getHeight() - rad; x++) {
for (y = rad; y < input.getWidth() - rad; y++) {
for (x1 = x - rad; x1 < x + rad; x1++) {
for (y1 = y - rad; y1 < y + rad; y1++) {
color[i++] = new Color(
input.getRGB(y1, x1));
}
}
// Smoothing colors of image
i = 0;
for (d = 0; d < max; d++) {
a1 = a1 + color[d].getAlpha();
}
a1 = a1 / (max);
for (d = 0; d < max; d++) {
r1 = r1 + color[d].getRed();
}
r1 = r1 / (max);
for (d = 0; d < max; d++) {
g1 = g1 + color[d].getGreen();
}
g1 = g1 / (max);
for (d = 0; d < max; d++) {
b1 = b1 + color[d].getBlue();
}
b1 = b1 / (max);
int sum1 = (a1 << 24) + (r1 << 16)
+ (g1 << 8) + b1;
output.setRGB(y, x, (int)(sum1));
}
}
// Writing the blurred image on the disc where
// directory is passed as an argument
ImageIO.write(
output, "jpeg",
new File("D:/test/BlurredImage.jpeg"));
// Message to be displayed in the console when
// program is successfully executed
System.out.println("Image blurred successfully !");
}
}
输出:在控制台上
Java Program to Blur Image using Smoothing
执行完程序后控制台会显示一条信息图像模糊成功！此代码不会在联机 IDE 上运行，因为它需要磁盘上的映像。它以图示形式描述如下:
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