dynamic image-thumbnails - low quality

[Anon]

I'm working on a small image-db which creates a thumbnail when uploading an image and stores it in the DB.

But the quality of the thumbs is very low - I'm using the following code to generate the thumbnail:

$temp=imagecreate($new_width,$new_height);
imagecopyresized($temp,$im,0,0,0,0,$new_width,$new_height,$im_width,$im_height);
imagejpeg($temp,"temp.jpg");

Anybody got an idee how to improve the quality of the thumbs?

regards
Tommy

[Anon]

imagecopyresized uses bi-cubic redering, which is basically the best you can do.

the fact that they were both JPEG files does lower the quality a little, but not very noticable.

basically, if you want better thumbnails, make sure the originals are high quality larger images. you may also want to make the thumbnails a little bigger.

[Anon]

I allready found the problem.

i had to use ImageCreateTrueColor insteed of ImageCreate

thx anyway

regards
tommy