📜  节点吉普 |高斯

📅  最后修改于: 2022-05-13 01:56:30.917000             🧑  作者: Mango

节点吉普 |高斯

简介Gaussian()函数是 Nodejs 中的一个内置函数| Jimp 对图像应用真正的高斯模糊,但与其他 Jimp 函数相比,它的处理速度相当慢。

句法:

gaussian(r, cb)

范围:

  • r - 此参数存储模糊的像素半径。
  • cb – 这是编译完成时调用的可选参数。

输入图像:

设置环境:

npm init -y

安装依赖:

npm install jimp

示例 1:

javascript
//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');
// invert function
  image.gaussian(5)
  .write('gaussian1.png');
}
 
main();
  console.log("Image Processing Completed");


javascript
//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');
//gaussian function using callback function
  image.gaussian(10, function(err){
    if (err) throw err;
  })
  .write('gaussian2.png');
}
 
main();
  console.log("Image Processing Completed");


输出:

示例 2:使用半径和 cb(可选参数)

javascript

//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');
//gaussian function using callback function
  image.gaussian(10, function(err){
    if (err) throw err;
  })
  .write('gaussian2.png');
}
 
main();
  console.log("Image Processing Completed");

输出:

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