选择Imagemagick& GD用于创建缩略图 [英] Choosing between Imagemagick & GD for thumbnail creation

问题描述

我要写一个缩略图创建功能。

我可以使用Imagemagick& GD库方法。

哪种方法可以创建更好的缩略图，服务器更快更好（加载，...）？

I'm going to write a function for thumbnail creation.
I can use both Imagemagick & GD Library methods.
Which method creates better thumbnails and is faster and better for server (load, ...)?

谢谢

推荐答案

$im = imagecreatefromjpeg('photo.jpg');

$ox = imagesx($im);
$oy = imagesy($im); 

$nx = 320;
$ny = 240;

$nm = imagecreatetruecolor($nx, $ny); 

imagecopyresized($nm,$im,0,0,0,0,$nx,$ny,$ox,$oy); 

imagejpeg($nm, 't_photo.jpg');

VS

exec('convert photo.jpg -resize 320x240 t_photo.jpg');

您怎么看？

每个好的缩略图应该有点锐化......

Also every good thumbnail should be sharpened a bit...

exec('convert photo.jpg -resize 320x240 -unsharp 1.5×1.0+1.5+0.02 t_photo.jpg');

http://net.tutsplus.com/tutorials/php/create-instagram-filters-with-php/

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