Hello,

fxImage returns a new imagick object. Are you sure you're operating on the correct object when testing?

Thanks, I really did reference same object in fxImage case. I will try it once again tonight. In case of conolveImage it returns boolean, which is always true, but has absolutely no effect on the image. Please try following kernel which should reproduce the emboss effect:

$kernel=array( -1,-1, 1, -1, 0, 1, 0, 1, 1);

Hi,

here is a test script using your kernel:

http://valokuva.org/~mikko/convolve.php
http://valokuva.org/~mikko/convolve.phps

And here is the original image:
http://valokuva.org/~mikko/test.png

Seems to be working for me. What version on ImageMagick are you using?

It's very strange.

We are currently using ImageMagick 6.4.1 10/02/08 Q16 (and latest stable imagick because we had various weird problems with later versions of ImageMagick. The latest one darkened the photo after Rotate/Skew ops.

It would also be great if you could add the functions to apply ordered dither to the image.

Thanks in advance.

I am closing this bug as I can not reproduce the issue here.

Thanks.

I have tried it from the command line (convert) and it worked out correctly, however it doesn't work from Imagick. I will try building the .so from scratch again.

I have tried building IM 6.4.7-9 yesterday from Source as well as CSV ver of imagick and php 5.2.8. convolveImage() has still no efefct on the resulting image. Could you please advise what else could I check? I have noticed that with 6.4.7-9 if you call sharpenImage() after either rotateImage() or shearImage() (I guess any function which is to do with virtual pixel) the image becomes almost black (very dark).

I have tried building IM 6.4.7-9 yesterday from Source as well as CSV
ver of imagick and php 5.2.8. convolveImage() has still no efefct on the
resulting image. Could you please advise what else could I check? I have
noticed that with 6.4.7-9 if you call sharpenImage() after either
rotateImage() or shearImage() (I guess any function which is to do with
virtual pixel) the image becomes almost black (very dark).

This bug has been fixed in CVS.

In case this was a documentation problem, the fix will show up at the
end of next Sunday (CET) on pecl.php.net.

In case this was a pecl.php.net website problem, the change will show
up on the website in short time.
 
Thank you for the report, and for helping us make PECL better.

convolveImage() has still no efefct on the
resulting image. I tried your example now and it does not work  
as well.

Can you test the following code:

<?php

$i = new imagick("test.png");
$i->setImageBias(10000);
$kernel = array( 0,1,0,
                 1,1,1,
                 0,1,0);

$i->convolveImage($kernel);

header('Content-Type: image/png');
echo $i;

The problem is setImageBias is only making the picture a 
little brighter. convolveImage does not make any difference. I 
honestly don't know what to try.

I have noticed that when refreshing the page with your example  
i.e. http://valokuva.org/~mikko/convolve.php it produces 
different results. Sometimes the image is completely black, 
sometimes it does apply some blur and sometimes it remains 
untouched.