Sharpen Thumbnails

Thanks for the great little plugin – it does the job!:)
I noticed that generated thumbnails appear quite fuzzy.

I added a bit of sharpening for jpeg output:

private function saveIm($mime,&$newim,$f){
if($mime==’image/png’){
imagepng($newim, $f);
}
elseif($mime==’image/jpeg’){

// define the sharpen matrix
$sharpen = array(
array(0.0, -1.0, 0.0),
array(-1.0, 9.5, -1.0),
array(0.0, -1.0, 0.0)
);

// calculate the sharpen divisor
$divisor = array_sum(array_map(‘array_sum’, $sharpen));

// apply the matrix
imageconvolution($newim, $sharpen, $divisor, 0);

imagejpeg($newim, $f, 80); //changed quality to 80
}
elseif($mime==’image/bmp’){
imagebmp($newim, $f);
}
elseif($mime==’image/gif’){
imagegifg($newim, $f);
}
elseif($mime==’image/vnd.wap.wbmp’){
imagewbmp($newim, $f);
}
}