Node.js GM median() Function

Last Updated : 31 Mar, 2023

The median() function is an inbuilt function in the GraphicsMagick library which is used to apply a median filter to the image. The function returns the true value on success. Note: This function does not work after the composite() function.

Syntax:

median(radius)

Parameters: This function accepts a single parameter radius which is the radius of the pixel.

Return Value: This function returns the GraphicsMagick object.

Example 1:

javascript

// Include gm library
const gm = require('gm');
 
// Import the image
gm('1.png')
 
// Invoke Median function
.median(2)
 
// Process and Write the image
.write("median1.png", function (err) {
      if (!err) console.log('done');
});

Output:

Example 2:

javascript

// Include gm library
const gm = require('gm');
 
// Import the image
gm(600, 300, 'white')
 
// Set the color for the stroke
.stroke("green", 3)
 
// Set the font 
.font("Helvetica.ttf", 60)
 
// Call to drawText Function
.drawText(100, 280, "GeeksforGeeks!")
 
// Invoke borderColor() function
// and set border color to green
.borderColor("Green")
 
// Invoke border function
.border(62, 32)
 
// Invoke median function
.median(5)
 
// Process and write the image 
.write("median2.png", function (err) {
      if (!err) console.log('done');
});