PHP, Structures and Functions, IMAGICK


<?php



bool public Imagick::adaptiveSharpenImage(

                            float $radius, 

                            float $sigma, 

                             int $channel = Imagick::CHANNEL_DEFAULT

                                         );



?>

$radius

The ZERO is auto-selection.

This is the Gaussian, in pixels, not counting the center pixel.

$sigma

The standard deviation of the Gaussian, in pixels.

$channel

Defaults to Imagick::CHANNEL_DEFAULT.

This function returns a TRUE on success.

AVAILABLE "imagick" CHANNEL STUDIED IN THIS TUTORIAL 1690 - ImageMagick 6.9.10-6
CHANNEL
CONSTANT	VALUE	ABOUT
imagick::CHANNEL_UNDEFINED	0
imagick::CHANNEL_RED	1
imagick::CHANNEL_GRAY	1
imagick::CHANNEL_CYAN	1
imagick::CHANNEL_GREEN	2
imagick::CHANNEL_MAGENTA	2
imagick::CHANNEL_BLUE	4
imagick::CHANNEL_YELLOW	4
imagick::CHANNEL_ALPHA	8
imagick::CHANNEL_OPACITY	8
imagick::CHANNEL_MATTE	8
imagick::CHANNEL_BLACK	32
imagick::CHANNEL_INDEX	32
imagick::CHANNEL_ALL	134217727
imagick::CHANNEL_DEFAULT	134217719
ed48

EXERCISE


<?php



// Run several times



$img1 = new Imagick();



$jpgfn = PATH2IMGW . '/jpg/all.jpg';

$str1img = 'img/results/all521.jpg';



$img1->readImage($jpgfn);



$rd = mt_rand(0,10);

$sg = mt_rand(0,100);



$img1->adaptiveSharpenImage($rd,$sg,imagick::CHANNEL_BLUE);



$strg = $img1->getImageBlob();



$img = imagecreatefromstring($strg);



imagejpeg($img, $str1img);



echo basename($str1img); ?>

<br><br>

<img src="<?php echo $str1img; ?>"

 alt="<?php echo $str1img; ?>" 

 title="<?php echo $str1img; ?>">