Re: Thumbnail generator
On Mon, 21 Jan 2002, Robert Landrum wrote: [...] You may want to take a look at Apache::ImageMagick (if you not already have). It's let's you create thumbnails very easy (just two parameters pic.xxx/scale?geometry=100x100) and ImageMagick supports over 80 different formats. It also handles conversion from 4 color pictures to RGB for your thumbnails and many other things, if you need them. ImageMagick is way too slow for use in a production system. Especially if your resizing large images into thumbnails. I suggest sacrificing space for speed and pre-generating all your thumbnails. I do that too (with Image::Magick). If the pictures are large it takes forever to scale them even with a more efficient lib. Most of the time libjpeg will do everything you need, including scaling. I suggestion GD with Jpeg support or Inline.pm/C/libjpeg for real time conversion of jpegs. libjpeg doesn't (afaik) do sharpening/unsharp mask and the two billion other things that are nice to have if you are trying to get a high quality output. http://photo.netcetera.dk/g/snow|2002/01/01/DSC_0126.jpg;size=me :-) - ask -- ask bjoern hansen, http://ask.netcetera.dk/ !try; do(); more than a billion impressions per week, http://valueclick.com
RFC: Thumbnail generator
I recently decided that Apache::Gallery is really nice if you want to sit down and start fiddling with templates, but that I needed to make a quick-easy version for myself. The design is to be extremely simple, and is divided into two seperate modules. The first is an on-the-fly thumbnail generator (currently supports only jpeg), which is just a spiced up implementation of Image::GD::Thumbnail. The second is a directory index generator, which displays each file name and a link to the picture, using URIs to the on-the-fly thumbnail generator to show the previews. Ideas are welcome, but my main questions are: 1) Put it on CPAN? 2) Namespace? Issac
Re: Thumbnail generator
I recently decided that Apache::Gallery is really nice if you want to sit down and start fiddling with templates, but that I needed to make a quick-easy version for myself. The design is to be extremely simple, and is divided into two seperate modules. The first is an on-the-fly thumbnail generator (currently supports only jpeg), which is just a spiced up implementation of Image::GD::Thumbnail. You may want to take a look at Apache::ImageMagick (if you not already have). It's let's you create thumbnails very easy (just two parameters pic.xxx/scale?geometry=100x100) and ImageMagick supports over 80 different formats. It also handles conversion from 4 color pictures to RGB for your thumbnails and many other things, if you need them. Gerald - Gerald Richterecos electronic communication services gmbh Internetconnect * Webserver/-design/-datenbanken * Consulting Post: Tulpenstrasse 5 D-55276 Dienheim b. Mainz E-Mail: [EMAIL PROTECTED] Voice:+49 6133 925131 WWW:http://www.ecos.de Fax: +49 6133 925152 -
Re: Thumbnail generator
At 4:13 PM +0100 1/21/02, Gerald Richter wrote: I recently decided that Apache::Gallery is really nice if you want to sit down and start fiddling with templates, but that I needed to make a quick-easy version for myself. The design is to be extremely simple, and is divided into two seperate modules. The first is an on-the-fly thumbnail generator (currently supports only jpeg), which is just a spiced up implementation of Image::GD::Thumbnail. You may want to take a look at Apache::ImageMagick (if you not already have). It's let's you create thumbnails very easy (just two parameters pic.xxx/scale?geometry=100x100) and ImageMagick supports over 80 different formats. It also handles conversion from 4 color pictures to RGB for your thumbnails and many other things, if you need them. ImageMagick is way too slow for use in a production system. Especially if your resizing large images into thumbnails. I suggest sacrificing space for speed and pre-generating all your thumbnails. Most of the time libjpeg will do everything you need, including scaling. I suggestion GD with Jpeg support or Inline.pm/C/libjpeg for real time conversion of jpegs. There are probably other faster libs out there, and I'm just citing the ones I've heard about or used in the past. Rob -- When I used a Mac, they laughed because I had no command prompt. When I used Linux, they laughed because I had no GUI.
Re: Thumbnail generator
Robert Landrum wrote: At 4:13 PM +0100 1/21/02, Gerald Richter wrote: I recently decided that Apache::Gallery is really nice if you want to sit down and start fiddling with templates, but that I needed to make a quick-easy version for myself. The design is to be extremely simple, and is divided into two seperate modules. The first is an on-the-fly thumbnail generator (currently supports only jpeg), which is just a spiced up implementation of Image::GD::Thumbnail. You may want to take a look at Apache::ImageMagick (if you not already have). It's let's you create thumbnails very easy (just two parameters pic.xxx/scale?geometry=100x100) and ImageMagick supports over 80 different formats. It also handles conversion from 4 color pictures to RGB for your thumbnails and many other things, if you need them. ImageMagick is way too slow for use in a production system. Especially if your resizing large images into thumbnails. I suggest sacrificing space for speed and pre-generating all your thumbnails. Most of the time libjpeg will do everything you need, including scaling. I suggestion GD with Jpeg support or Inline.pm/C/libjpeg for real time conversion of jpegs. There are probably other faster libs out there, and I'm just citing the ones I've heard about or used in the past. Rob -- When I used a Mac, they laughed because I had no command prompt. When I used Linux, they laughed because I had no GUI. Part of the idea here is to do everything on-the-fly so that changes on the filesystem (in terms of adding/removing pictures) will IMMEDIATELY take effect (including caching, etc) on the web interface. That means no thumbnails to start with. Issac
Re: Thumbnail generator
Issac Goldstand [EMAIL PROTECTED] writes: Part of the idea here is to do everything on-the-fly so that changes on the filesystem (in terms of adding/removing pictures) will IMMEDIATELY take effect (including caching, etc) on the web interface. That means no thumbnails to start with. Yeah, but cache early, cache often. -- Dave Hodgkinson, Wizard for Hire http://www.davehodgkinson.com Editor-in-chief, The Highway Star http://www.deep-purple.com Interim Technical Director, Web Architecture Consultant for hire
Re: Thumbnail generator
ImageMagick is way too slow for use in a production system. Especially if your resizing large images into thumbnails. Apache::ImageMagick will cache the created thumbnail, so it only has to be done once and can it automaticly recreate the thumbnail if the pictures on disk changes. Gerald - Gerald Richterecos electronic communication services gmbh Internetconnect * Webserver/-design/-datenbanken * Consulting Post: Tulpenstrasse 5 D-55276 Dienheim b. Mainz E-Mail: [EMAIL PROTECTED] Voice:+49 6133 925131 WWW:http://www.ecos.de Fax: +49 6133 925152 -
