Apply Negative Filter Effect on an Image

Steps to Apply Negative Filter Effect on an Image | OpenCV with Visual Studio in Windows 10. In this Tutorial, we are going to apply Negative Filter Effect on an image using OpenCV.

1. First of all, Follow this tutorial to Install & Configure OpenCV with Visual Studio 2015


2. Copythe Full Source Code to Apply Negative Filter on an Image from here:

#include<opencv2/highgui/highgui.hpp>

#include<iostream>

int main()
{
 //Load an Image
 IplImage* img = cvLoadImage("C:/Briefcase/Chess.jpg");
 cv::namedWindow("Image", CV_WINDOW_AUTOSIZE);
 cvShowImage("Image", img);

 //Negative Effect
 cvNot(img, img);
 cv::namedWindow("NegativeEffect", CV_WINDOW_AUTOSIZE);
 cvShowImage("NegativeEffect", img);

 //Wait Key press
 cvWaitKey(0);

 //destroy
 cvDestroyWindow("Image");
 cvDestroyWindow("NegativeEffect");

 return 0;
}

OR
Get NegativeEffect.cpp from Github:
Download NegativeEffect.cpp


3. Paste full source code and Run it (Ctrl+F5 or F5).

OUTPUT

Load Image OpenCV

Negative Image OpenCV

Explaination : Function used: cvNot(img, img) - This function can process images and invert every bit elment in an image.

• 1^st parameter is the source image.
• 2^nd parameter is the destination or resultant image which is a negative image.

---

Like, Share and Comment Below. You may also like these:

Apply Blur Filter Effect on an Image

Apply Erode Filter Effect on an Image

Apply Dilate Filter Effect on an Image

---