Quality of resized images?
7 posts by 2 authors in: Forums > CMS Builder
Last Post: February 1, 2008 (RSS)
By DHester - January 18, 2008
Just purchased a copy of CMS Builder yesterday. So far I'm very impressed. No problems installing. Still playing around with all the options [;)] One feature that I like is the multiple image upload (image gallery) field. I was wondering how I could improve the JPG quality of the resized images. They aren't terrible but I would like to boost the quality a bit. Could you tell me if this is possible and if so, where would I make the change in the code.
Thanks!
www.designsbydarren.com
Re: [DHester] Quality of resized images?
By Dave - January 18, 2008
Welcome aboard! I had a look at your site. Nice templates! I like them.
I haven't noticed any quality issues with the resizing. Could you attach the source and resized images so I can see what you mean?
We're just using the standard PHP imagecreatetruecolor and imagecopyresampled functions to do the resizing. If there's some other function or setting that can be tweaked to improve the quality - we'd certainly be open to doing that.
If you could post some examples we'll have a look and see what the problem is.
interactivetools.com
Re: [Dave] Quality of resized images?
By DHester - January 18, 2008 - edited: January 19, 2008
Thanks for the welcome! Appreciate your comment about my templates. I've got a bunch more to post but I'm waiting until I complete my site redesign using CMS Builder [;)]
Here's a sample of the images I uploaded. You'll see the distortion around the edge of the cards (especially on the thumbnail). The original image was crystal clear. On some of the other gallery scripts I've used you could adjust the JPG compression/quality. I realize the higher the quality, the larger the file size. So it's always a trade-off. For some applications, like photoblogs, you might want higher quality jpgs. I was playing with the gallery feature. It's really neat.
Note: I removed the sample images since the problem has been fixed.
www.designsbydarren.com
Re: [DHester] Quality of resized images?
By Dave - January 19, 2008
I've added having a quality setting to the feature list for an upcoming release. In the meantime, if you want to test it you can try editing the code in /lib/menus/default/upload_functions.php
Search for "imagejpeg" and replace this line:
case IMAGETYPE_JPEG: $savedFile = imagejpeg($targetImage, $targetPath); break;with this line:
case IMAGETYPE_JPEG: $savedFile = imagejpeg($targetImage, $targetPath, 100); break;Let me know if that does the trick.
interactivetools.com
Re: [Dave] Quality of resized images?
By DHester - January 19, 2008 - edited: January 19, 2008
Here's a new demo page showing images resize at the higher JPG quality. Big difference:
http://www.designsbydarren.com/test/blogPage.php?Sample_Image_Gallery_Created_Using_CMS_Builder-6/
www.designsbydarren.com
Re: [DHester] Quality of resized images?
By Dave - January 19, 2008
interactivetools.com
Re: [DHester] Quality of resized images?
By Dave - February 1, 2008
interactivetools.com