ID: 34992
Updated by: [EMAIL PROTECTED]
Reported By: jaanus at underwerks dot com
-Status: Assigned
+Status: Feedback
Bug Type: GD related
Operating System: Linux 2.6.13
PHP Version: 6CVS-2005-10-26 (snap)
Assigned To: pajoye
Previous Comments:
------------------------------------------------------------------------
[2005-10-26 14:52:28] [EMAIL PROTECTED]
Please provide the images you use for this test and images you like to
have as result (specifying which software you use).
I'm not sure about the use of alpha with convolution filter but
aesthetic toys. Interpolate the alpha using the convolutions make
little sense, what it does now is to get the src alpha value for a
given result pixel (x,y).
As a second point, you talk about background color, this is something
different as the alpha channel for a given pixel.
------------------------------------------------------------------------
[2005-10-26 12:42:07] [EMAIL PROTECTED]
Assigned to the maintainer.
------------------------------------------------------------------------
[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
