Image Sharpen , php ?

Hi !

I know it is possible to sharpen image with php, how can I do this ?

Can someone write an exampe , "how to" sharpen image ?

I have got such code (it resizes an image, but resized one needs sharpening
to look cool..):

case 1:
// Bild wird proportional verkleinert in das neue Bild kopiert
if ($new_width > 0) $x = $new_width / $width;
if ($new_height > 0) $y = $new_height / $height;

if (($y > 0 && $y < $x) || $x == 0) $x = $y;
$width_big = $width * $x;
$height_big = $height * $x;

if ($new_width > 0 && $new_width > $width_big) $dst_width =
$new_width;
else $dst_width = $width_big;
if ($new_height > 0 && $new_height > $height_big) $dst_height =
$new_height;
else $dst_height = $height_big;

// copy new picture into center of $dst_img
if ($dst_width > $width_big) $dstX=($dst_width - $width_big)/2;
else $dstX = 0;
if ($dst_height > $height_big) $dstY=($dst_height -
$height_big)/2;
else $dstY = 0;
switch (IN_GD_LIB_VERSION) {
case '2':
$dst_img = imagecreatetruecolor($dst_width,$dst_height);
$colorallocate = ImageColorAllocate ($dst_img,
IN_IMAGE_BGCOLOUR_R, IN_IMAGE_BGCOLOUR_G, IN_IMAGE_BGCOLOUR_B);

imagefilledrectangle($dst_img,0,0,$dst_width,$dst_ height,$colorallocate);

imagecopyresampled($dst_img,$src_img,$dstX,$dstY,0 ,0,$width_big,$height_big,
imagesx($src_img),imagesy($src_img));
if ($in_debug=="true") echo "<br> GD-LIB 2 - Generated new
Pic";
break;
default:
$dst_img = imagecreate($dst_width,$dst_height);
ImageColorAllocate ($dst_img,
IN_IMAGE_BGCOLOUR_R,IN_IMAGE_BGCOLOUR_G, IN_IMAGE_BGCOLOUR_B);

imagecopyresized($dst_img,$src_img,$dstX,$dstY,0,0 ,$width_big,$height_big,im
agesx($src_img),imagesy($src_img));
if ($in_debug=="true") echo "<br> GD-LIB 1 - Generated new
Pic";
}
break;



and want to add (where?) some code to sharpen the image (It will look much
better afterwords)

than you (I have apache 2, php 4.2.3, running windows !!)

regards (turn a blind eye on my english ;P)

http://www.php.net/manual/en/ref.image.php

Juz wrote:
> http://www.php.net/manual/en/ref.image.php

I can't find sharpen function ^^^^
.... I am a looser , can you help ?

Hi

>
> Just a thought... have you checked to make sure that it's using GD2
> rather than 1.8.x? (ie: executing the ImageCreateTrueColor() function
> rather than ImageCreate() ?)

No, It is not a my code... it is a part of someones idea

>
> Has 'GD2.dll' (I think it's named) been uncommented from your php.ini
> file?

Yup, it is :

....
;extension=php_filepro.dll
;extension=php_gd.dll
extension=php_gd2.dll
;extension=php_gettext.dll
;extension=php_hyperwave.dll
....

> Neither of these maybe be a solution to your issue, but just a
> thought =)
>

This code works, it makes input image smaller but adding a bit of sharpen
would make it look much better ( try this in photoshop - smaller needs to by
sharp to look "cool" for human eye , imho)

I have seen image magic php addon but I can't make it work under windows