Node.js GM equalize() Function
Last Updated :
30 Mar, 2023
The equalize() function is an inbuilt function in the GraphicsMagick library which is used to perform histogram equalization to the image. The function returns the true value of success.
Syntax:
equalize()
Parameters: This function does not accept any parameters.
Return Value: This function returns the GraphicsMagick object.
Example 1:
javascript
const gm = require( 'gm' );
gm( '1.png' )
.borderColor( 'Green' )
.border(10, 30)
.equalize()
.write( "equalize1.png" , function (err) {
if (!err) console.log( 'done' );
});
|
Output:
Example 2:
javascript
const gm = require( 'gm' );
gm(600, 300, 'white' )
.stroke( "green" , 3)
.font( "Helvetica.ttf" , 60)
.drawText(100, 280, "GeeksforGeeks!" )
.borderColor( "Green" )
.border(62, 32)
.equalize()
.write( "equalize2.png" , function (err) {
if (!err) console.log( 'done' );
});
|
Output:
Reference:
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