PECL::Imagick で画像リサイズ処理する場合どれ使えばいいか

bench.php

<?php 
$a = isset($argv[1])? $argv[1] : exit; 
if ( !preg_match('/^[arst]$/', $a) ) { exit; } 

$w = 350; 
$h = 234; 
$i = new Imagick('sample.jpg'); 

$s = microtime(true); 

switch ( $a ) { 
  case 'a': $i->adaptiveResizeImage($w, $h); break; 
  case 'r': $i->resizeImage($w, $h, Imagick::FILTER_POINT, 0); break; 
  case 's': $i->scaleImage($w, $h); break; 
  case 't': $i->thumbnailImage($w, $h); break; 
  default : break; 
} 

$e = microtime(true); 

$i->writeImage("sample_thumb_{$a}.jpg"); 
$i->clear(); 
$i->destroy(); 

echo $e - $s, PHP_EOL; 

result

$ php bench.php a
0.060811996459961

$ php bench.php r
0.095463991165161

$ php bench.php s
0.24654102325439

$ php bench.php t
0.25227499008179