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Node Jimp | brightness

The brightness() function is an inbuilt function in Nodejs | Jimp that adjusts the brightness of the image by a value of -1 to +1.

Syntax: 

brightness(n, cb)

Parameter: 

Input Images: 

Setup Environment : 

npm init -y

Install Dependencies : 

npm install jimp

Example 1: In this example, we will see the use of brightness().




// 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
    // contrast function
    image.brightness(.4)
        .write('brightness1.png');
}
 
main();
console.log("Image Processing Completed");

Output: 


Example 2: With cb (optional parameters) 




// 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
    // contrast function using callback function
    image.brightness(-.5, function (err) {
        if (err) throw err;
    })
        .write('brightness2.png');
}
 
main();
console.log("Image Processing Completed");

Output: 


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


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