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Node Jimp | Gaussian
  • Last Updated : 22 Feb, 2021

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: 
 



 

Setup Environment : 

npm init -y

Install Dependencies : 

npm install jimp

Example 1: 
 

javascript




//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
// invert function
  image.gaussian(5)
  .write('gaussian1.png');
}
 
main();
  console.log("Image Processing Completed");

Output: 
 

Example 2: With radius and cb (optional parameters) 
 

javascript




//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
//gaussian function using callback function
  image.gaussian(10, function(err){
    if (err) throw err;
  })
  .write('gaussian2.png');
}
 
main();
  console.log("Image Processing Completed");

Output: 
 

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




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