#34992 [Opn->Asn]: imageconvolution does not respect alpha
| From: | tony2001@php.net | Date: | Wed, 26 Oct 2005 10:42:10 +0000 |
| Subject: | #34992 [Opn->Asn]: imageconvolution does not respect alpha | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-87079@lists.php.net to get a copy of this message | ||
ID: 34992
Updated by: tony2001@php.net
Reported By: jaanus at underwerks dot com
-Status: Open
+Status: Assigned
Bug Type: GD related
Operating System: Linux 2.6.13
PHP Version: 6CVS-2005-10-26 (snap)
-Assigned To:
+Assigned To: pajoye
New Comment:
Assigned to the maintainer.
Previous Comments:
------------------------------------------------------------------------
[2005-10-26 11:15:59] jaanus at underwerks dot com
Description:
------------
imageconvolution destroys 8bit alpha channel in subject image
Reproduce code:
---------------
<?PHP
$img=imagecreatefromjpeg("image.png");
imageconvolution($img,array(array(-1,-1,-1),array(-1,16,-1),array(-1,-1,
-1)), 8,0);
imagejpeg($img,"test.png");
?>
Expected result:
----------------
A sharpened image with intact alpha channel, alternavly sharpened alpha
channel
Actual result:
--------------
Image is flattened against black background even if the color data of
the background indicates it should be white.
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=34992&edit=1