Image Interlacing is simply combining two images by layering one over the other with a certain opacity (usually 50%). The intention is to use the image in video, so that two images are displayed within one single frame, thereby doubling the frames-per-second without doubling the actual, physical amount of frames. Wikipedia provides a fairly decent explanation of this type of video technology: http://en.wikipedia.org/wiki/Interlaced_video .Best Description :http://www.100fps.com/Some sample code :<?php // Author: holdoffhunger@gmail.com // Imagick Type // --------------------------------------------- $imagick_type = new Imagick(); // Open File // --------------------------------------------- $file_to_grab = "image_workshop_directory/test.jpg"; $file_handle_for_viewing_image_file = fopen($file_to_grab, 'a+'); // Grab File // --------------------------------------------- $imagick_type->readImageFile($file_handle_for_viewing_image_file); // Get Rendering Intent Values // --------------------------------------------- $imagick_rendering_intent = $imagick_type->getImageRenderingIntent(); switch($imagick_rendering_intent) { case '0': $image_rendering_intent_evaluated = "Undefined"; break; case '1': $image_rendering_intent_evaluated = "Saturation"; break; case '2': $image_rendering_intent_evaluated = "Perceptual"; break; case '3': $image_rendering_intent_evaluated = "Absolute"; break; case '4': $image_rendering_intent_evaluated = "Relative"; break; } // Print Rendering Intent Values // --------------------------------------------- print("# $imagick_rendering_intent - $image_rendering_intent_evaluated");?>