Simulates a charcoal drawing.

$im = new Imagick($input);
$im->charcoalImage( 1, 2 );
$im->writeImage('charcoalImage.jpg'); 
$im->destroy();

Removes a region of an image and collapses the image to occupy the removed portion.

$im = new Imagick($input);
$im->chopImage( 50, 50, 80, 50 );
$im->writeImage('chopImage.jpg'); 
$im->destroy();

Clears all resources associated to Imagick object

edgeImage( 0.5 ); 
$im->writeImage('clear.jpg');  
$im->clear(); 
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Clips along the first path from the 8BIM profile, if present.

Clips along the named paths from the 8BIM profile, if present.

( Later operations take effect inside the path. It may be a number if preceded with #, to work on a numbered path, e.g., "#1" to use the first path. )

Makes an exact copy of the Imagick object.

$im = new Imagick($input);
$shadow = $im->clone(); 
$shadow->setImageBackgroundColor( new ImagickPixel( 'black' ) ); 
$shadow->shadowImage( 80, 3, 5, 5 ); 
$shadow->compositeImage( $im, Imagick::COMPOSITE_OVER, 0, 0 ); 
$shadow->writeImage( "clone.png" );
$shadow->destroy();

Replaces colors in the image from a color lookup table.

$im = new Imagick($input);
$clut = new Imagick('gradient.png');
$im->clutImage( $clut );
$im->writeImage('clutImage.jpg'); 
$im->destroy();

( Optional second parameter to replace colors in a specific channel. This method is available if Imagick has been compiled against ImageMagick version 6.3.6 or newer. )

Composites a set of images while respecting any page offsets and disposal methods.

( GIF, MIFF, and MNG animation sequences typically start with an image background and each subsequent image varies in size and offset. Returns a new Imagick object where each image in the sequence is the same size as the first and composited with the next image in the sequence. )

Changes the color value of any pixel that matches target and is an immediate neighbor.

$im = new Imagick('charcoalImage.jpg');
$im->colorFloodfillImage( Red, 0, white, 52, 35 );
$im->writeImage('colorFloodfillImage.jpg'); 
$im->destroy();

Blends the fill color with each pixel in the image.

$im = new Imagick($input);
$im->colorizeImage( '#0000b0', 0.5 );
$im->writeImage('colorizeImage.jpg'); 
$im->destroy();

Combines one or more images into a single image.

$im = new Imagick ();
$im->newImage(200, 150, new ImagickPixel('transparent'));
$imr = new Imagick('separateImagechannel_r.jpg');
$imb = new Imagick('separateImagechannel_g.jpg' );
$img = new Imagick('separateImagechannel_b.jpg');
$im->addimage($imr);
$im->addimage($imb);
$im->addimage($img);
$im->flattenImages(); 
$im = $im->combineImages( Imagick::CHANNEL_ALL );
$im->writeImage('combineImages.jpg'); 
$im->destroy();

( The grayscale value of the pixels of each image in the sequence is assigned in order to the specified channels of the combined image. The typical ordering would be image 1 => Red, 2 => Green, 3 => Blue, etc.
God knows what this is supposed to mean: To apply to more than one channel, combine channeltype constants using bitwise operators. )

Adds a comment to your image.

$im = new Imagick($input);
$im->commentImage( 'Rubblewebs' );
$im->writeImage('commentImage.jpg'); 
$im->destroy();

( The comment is within the image data. )

Compares one or more images and returns the difference image.

Compares each image with the next in a sequence and returns the maximum bounding region of any pixel differences it discovers.