There are 3 main components to this server setup: 1) PHP-based API - new-facade.php and (coming soon) nearby-facades.php. Accept HTTP requests and return json. 2) Database and file storage - MySQL database stores metadata about facades. Copies of uploaded facade images are stored in uploads/. Fern files in ferns/. These are defaults and can be changed with settings.php. 3) Deferred processing daemon - A PHP-based daemon (using System::Daemon) that continually scans the database for unprocessed files and sends them to the ferns processor (located in exec/) which is written in C++ and uses OpenCV.

Dependencies:

• PEAR and System::Daemon: http://pear.php.net/package/System_Daemon
• AllowOverride All set in Apache config files (to block access to exec/) via a .htaccess file.
• PHP 5.2.0 or greater for built in json support.