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How to invert the colors of an image in Node Jimp?
NodeJS – Invert() is an inbuilt function that is used to invert the image colors.
Syntax
invert(cb)
sepia() paramters
b – This is an optional parameter that can be invoked after the compilation is complete.
Input Image
Using Node JIMP – INVERT()
Before proceeding to use invert() functions, please check that the following statements are already executed for setting up the environment.
npm init -y // Initialising the Node environment
npm install jimp --save // Installing the jimp dependency
Create an invert.js file and copy-paste the following code snippet in it.
Use node invert.js to run the code.
Note − The method name should match with the JS file name. Only then it will be able to call the desired method.
Example
const Jimp = require('jimp') ;
async function invert() {
// Reading Image
const image= await Jimp.read
('/home/jimp/tutorials_point_img.jpg');
image.invert()
.write('/home/jimp/invert.jpg')
}
invert(); // Calling the function here using async
console.log("Image is processed successfully");Output
Using Node JIMP – Sepia() with 'cb' parameters
Example
const Jimp = require('jimp') ;
async function invert() {
// Reading Image
const image = await Jimp.read
('/home/jimp/tutorials_point_img.jpg');
image.invert(function(err){
if (err) throw err;
})
.write('/home/jimp/invert.jpg');
}
invert();
console.log("Image is processed successfully");Output
Updated on: 27-Apr-2021
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