📜  Java DIP-应用高斯滤波器

📅  最后修改于: 2020-12-14 05:39:38             🧑  作者: Mango


在本章中,我们将高斯滤镜应用于使图像模糊的图像。我们将使用OpenCV函数GaussianBlur将高斯滤波器应用于图像。可以在Imgproc软件包下找到。其语法如下-

Imgproc.GaussianBlur(source, destination,Size,SigmaX);

函数参数描述如下-

Sr.No. Argument & Description
1

source

It is source image.

2

destination

It is destination image.

3

Size

It is Gaussian kernel size.

4

SigmaX

It is Gaussian kernel standard deviation in X direction.

除了GaussianBlur方法外,Imgproc类还提供其他方法。他们简要描述-

Sr.No. Method & Description
1

cvtColor(Mat src, Mat dst, int code, int dstCn)

It converts an image from one color space to another.

2

dilate(Mat src, Mat dst, Mat kernel)

It dilates an image by using a specific structuring element.

3

equalizeHist(Mat src, Mat dst)

It equalizes the histogram of a grayscale image.

4

filter2D(Mat src, Mat dst, int depth, Mat kernel, Point anchor, double delta)

It convolves an image with the kernel.

5

GaussianBlur(Mat src, Mat dst, Size ksize, double sigmaX)

It blurs an image using a Gaussian filter.

6

integral(Mat src, Mat sum)

It calculates the integral of an image.

下面的示例演示如何使用Imgproc类将高斯滤波器应用于图像。

import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Size;

import org.opencv.highgui.Highgui;
import org.opencv.imgproc.Imgproc;


public class Main {
   public static void main( String[] args ) {
   
      try {
         System.loadLibrary( Core.NATIVE_LIBRARY_NAME );
         
         Mat source = Highgui.imread("digital_image_processing.jpg",
         Highgui.CV_LOAD_IMAGE_COLOR);
         
         Mat destination = new Mat(source.rows(),source.cols(),source.type());
         Imgproc.GaussianBlur(source, destination,new Size(45,45), 0);
         Highgui.imwrite("Gaussian45.jpg", destination);
      
      } catch (Exception e) {
         System.out.println("Error:" + e.getMessage());
      }
   }
}

输出

当您执行给定的代码时,将看到以下输出-

原始图片

应用高斯滤波器教程

当此原始图像与大小为11和45的高斯滤波器卷积时,可以看到以下输出。

大小为11的高斯滤波器

应用高斯滤波器教程

尺寸为45的高斯滤波器

应用高斯滤波器教程