Node Jimp | Gaussian

Introduction
The Gaussian() function is an inbuilt function in Nodejs | Jimp which applies a true Gaussian blur to the image but its processing is quite slow in comparison to other Jimp functions.
Syntax:

gaussian(r, cb)

Parameter:

  • r – This parameter stores the pixel radius of the blur.
  • cb – This is an optional parameter which is invoked when compilation is complete.

Input Images:

Example 1:



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//npm install --save jimp
//import jimp library to the environment
var Jimp = require('jimp');
  
//User-Defined Function to read the images
async function main() {
  const image = await Jimp.read
('https://media.geeksforgeeks.org/wp-content/uploads/20190328185307/gfg28.png');
// invert function
  image.gaussian(5)
  .write('gaussian1.png');
}
  
main();
  console.log("Image Processing Completed");

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Output:




Example 2: With radius and cb (optional parameters)













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//npm install --save jimp 


//import jimp library to the environment 


var Jimp = require('jimp'); 


  


//User-Defined Function to read the images 


async function main() { 


  const image = await Jimp.read 


('https://media.geeksforgeeks.org/wp-content/uploads/20190328185333/gfg111.png'); 


//gaussian function using callback function 


  image.gaussian(10, function(err){ 


    if (err) throw err; 


  }) 


  .write('gaussian2.png'); 


} 


  


main(); 


  console.log("Image Processing Completed"); 



















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Output:



Reference: https://www.npmjs.com/package/jimp





    

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