The Imagick::blueShiftImage() function is an inbuilt function in PHP which is used to mute the colors of the image to simulate a scene at nighttime in the moonlight.
Syntax:
bool Imagick::blueShiftImage( $factor)
Parameters: This function accept a single parameter $factor which is used to specify the mutes colors of image.
Return Value: This function returns True on success.
Below programs illustrate the Imagick::blueShiftImage() function in PHP:
Program 1:
Original Image:
<?php   // Create new imagick object $imagick = new Imagick(     // Using blueShiftImage function $imagick->blueShiftImage(1.3);   header("Content-Type: image/jpg"); echo $imagick->getImageBlob();   ?> |
Output:
Program 2:
Original Image:
<?php   // Create new imagick object $imagick = new Imagick(   // Using blueShiftImage function $imagick->blueShiftImage(2.5);   header("Content-Type: image/jpg"); echo $imagick->getImageBlob();   ?> |
Output:
Reference: http://php.net/manual/en/imagick.blueshiftimage.php
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