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PHP | Gmagick edgeimage() Function
  • Last Updated : 22 Mar, 2021

The Gmagick::edgeimage() function is an inbuilt function in PHP which is used to enhance the image edges using convolution filter of the given radius. Radius 0 is used as auto-selected.

Gmagick Gmagick::edgeimage( $radius )

Parameters: This function accepts a single parameter as $radius which takes the radius of the operation. 
Return Value: This function returns Gmagick object with image enhance.
Errors/Exceptions: This function throws GmagickException on error.
Below programs illustrates the Gmagick::edgeimage() function in PHP:
Program 1: 
Original Image: 



// Create a Gmagick object
$gmagick = new Gmagick(
// Use edgeimage() function
header('Content-type: image/png');
// Output the image
echo $gmagick;


Program 2: 


// Create a GmagickDraw object
$draw = new GmagickDraw();
// Create GmagickPixel object
$strokeColor = new GmagickPixel('Red');
$fillColor = new GmagickPixel('Green');
// Set the color, opacity of image
// Set the width and height of image
// Function to draw circle 
$draw->circle(250, 250, 100, 150);
$gmagick = new Gmagick();
$gmagick->newImage(500, 500, 'White');
// Use edgeimage() function
// Display the output image
header("Content-Type: image/png");
echo $gmagick->getImageBlob();



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