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PHP Gmagick gammaimage () Function

Syntax:
Gmagick Gmagick::gammaimage ($gamma)
Parameters: This function takes one $gamma parameter, which contains the gamma correction value.Return Value:This function returns a gamma corrected Gmagick object.Errors / Exceptions:This function throws a GmagickException on error.The following programs illustrate the Gmagick::gammaimage() functionin PHP:Program 1:
Source image:  
// Create a Gmagic object k $gmagick = new Gmagick ( ` https://media.engineerforengineer.org/wp-content/uploads/tech.png ` );  
// Using the gammaimage() function $gmagick -> gammaimage (5); header ( ` Content-type: image / png` );  
// Display image echo $gmagick ; ?>
Output: Program 2: < tbody>  
// Create a GmagickDraw object $draw = new GmagickDraw();  
// Create GmagickPixel $strokeColor = new GmagickPixel ( `Red` ); $fillColor = new GmagickPixel ( `Green` );  
// Set the color, opacity of the image $draw -> setStrokeOpacity (1); $draw -> setStrokeColor ( `Red` ); $draw -> setFillColor ( `Green` );  
// Set the width and height of the image $draw -> setStrokeWidth (7); $draw -> setFontSize (72);  
// Function for drawing a circle $draw -> circle (250, 250, 100, 150); $gmagick = new Gmagick(); $gmagick -> newImage (500, 500, `White` ); $gmagick -> setImageFormat ( "png" ); $gmagick -> drawImage ( $draw );  
// Using the gammaimage() function $gmagick -> gammaimage (10);  
// Display the output image header ( "Content-Type: image / png" ); echo $gmagick -> getImageBlob(); ?>
Output: Link : http://php.net/manual/en/gmagick.gammaimage.php
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