Node Jimp | Gaussian
The Gaussian() function is an inbuilt function in Nodejs | Jimp that 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 that is invoked when compilation is complete.
Input Images:
Setup Environment :
npm init -y
Install Dependencies :
npm install jimp
Example 1: In this example, we will use the Gaussian() function.
javascript
//npm install --save jimp //import jimp library to the environment const Jimp = require( 'jimp' ); //User-Defined Function to read the images async function main() { const image = await Jimp.read( 'https://media.w3wiki.net/wp-content/uploads/20190328185307/gfg28.png' ); // 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 const Jimp = require( 'jimp' ); //User-Defined Function to read the images async function main() { const image = await Jimp.read( 'https://media.w3wiki.net/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" ); |
Output:
Reference: https://www.npmjs.com/package/jimp
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