Node.js GM recolor() Function
Last Updated :
31 Mar, 2023
The recolor() function is an inbuilt function in the GraphicsMagick library which is used to apply a color translation matrix to the image channels. The function returns the true value of success.
Syntax:
recolor( matrix )
Parameters: This function accepts a single parameter as mentioned above and described below:
- Matrix: This parameter is used to specify the value as a string of a matrix which is decoded as a color transformation matrix.
Return Value: This function returns the GraphicsMagick object.
Example 1:
javascript
const gm = require( 'gm' );
gm( '1.png' )
.recolor( '4 0 0, 0 6 0, 9 0 1' )
.write( "recolor1.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!" )
.recolor( '10 0 0, 2 6 0, 9 0 5' )
.write( "recolor2.png" , function (err) {
if (!err) console.log( 'done' );
});
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Output:
Reference:
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