Node Jimp | Color red

The red modifier is an inbuilt color modifier in Nodejs | Jimp which modifies the red components of the given image by a given amount.

image.color([
  { apply: 'red', params: value }
]);

Parameter:

• value – This parameter stores the amount by which the red color of the image is to be modified.

Input Images:

Example 1: In this example, we will see the use of color modifiers.

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.geeksforgeeks.org/wp-content/uploads/20190328185307/gfg28.png');
    // color function having red modifier
    image.color([{ apply: 'red', params: [73] }])
        .write('red1.png');
}

main();
console.log("Image Processing Completed");

Output:

Example 2: 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.geeksforgeeks.org/wp-content/uploads/20190328185333/gfg111.png');
    // color function having red modifier
    image.color([{ apply: 'red', params: ['50'] }], function (err) {
        if (err) throw err;
    })
        .write('xor2.png');
}

main();
console.log("Image Processing Completed");

Output:

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