note 26575 deleted from function.imagejpeg by didou
| From: | didou@php.net | Date: | Wed, 22 Oct 2003 12:24:25 +0000 |
| Subject: | note 26575 deleted from function.imagejpeg by didou | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-59126@lists.php.net to get a copy of this message | ||
Note Submitter: tumi0011@web.de
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regarding to paul: he is complaining about poor quality. Another told about the increase in size
using jpg. I did some research and I found out the simple answer for this is: gd is using internaly
only 256 color (8bit) images. Every source image (even jpg with truecolor) is transformed into 8bit
images using error diffusion. Clearly this has a very bad impact on quality of truecolor images and
on image size too, since jpg uses lossy compression and the big increase of high frequency
components after error diffusion...
The only way to come around with this is using gd2 if possible.