节点 Jimp |颜色蓝色

原文:https://www.geeksforgeeks.org/node-jimp-color-blue/

简介:异或修改器是 Nodejs Jimp 中的一个内置颜色修改器，它以给定的量修改给定图像的蓝色分量。

语法:

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

参数:

• 值:该参数存储图像蓝色的修改量。

输入图像:

例 1:

// npm install --save jimp
// import jimp library to the environment
var 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 blue modifier
    image.color([{apply:'blue', params: [73]}])
    .write('blue1.png');
} 

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

输出:

例 2: cb(可选参数)

// npm install --save jimp
// import jimp library to the environment
var 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 blue modifier
    image.color([{apply:'blue', params: ['50']}], function(err){
        if (err) throw err;
    })
    .write('blue2.png');
}

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

输出:

参考:T2】https://www.npmjs.com/package/jimp

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