How to spin the hue of an image using Jimp in NodeJS?

Node.jsServer Side ProgrammingProgramming

NodeJS – spin modifier is an inbuilt function that is used to spin the hue of an image to a given amount from -360° to 360°. We can spin the color from 0 to 360, but it will not perform any function, as it sets the hue back to what it was before.

Syntax

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

color() paramters

  • value – It will store the amount of hue to be applied while spinning. Its possible values are from -360 to 360.

Input Image

Using Node JIMP – COLOR – SPIN

Before proceeding to use color() – spin 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 a colorSpin.js file and copy-paste the following code snippet in it.

  • Use node colorSpin.js to run the code.

Note − Note that 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 colorSpin() {
   // Reading Image
   const image = await Jimp.read
   ('/home/jimp/tutorials_point_img.jpg');
   image.color([{apply: 'spin', params: [50]}])
   .write('/home/jimp/colorSpin.jpg');
}

colorSpin(); // Calling the function here using async
console.log("Image is processed successfully");

Output

Using Node JIMP – Color - SPIN with 'cb' parameters

Example

const Jimp = require('jimp') ;

async function colorSpin() {
   // Reading Image
   const image = await Jimp.read
   ('/home/jimp/tutorials_point_img.jpg');
   image.color([{apply:'spin', params: [100]}], function(err){
      if (err) throw err;
   })
   .write('/home/jimp/colorSpin.jpg');
}

colorSpin();
console.log("Image is processed successfully");

Output

raja
Published on 27-Apr-2021 16:36:35
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