The LIRE web demo now includes an RGB color histogram as well as the MPEG-7 edge histogram implementation. The color histogram works well for instance for line art, such as this query.The edge histogram works fine for clear, gloabl edge distributions like queries such as this one. However, it’s performing different from PHOG. An example for the difference is this PHOG query compared to the according edge histogram query. The image below shows both queries.
A new web based LIRE demo is online. Within this demo you are able to search in an index of 300.000 images from the MIRFLICKR data set. Currently online queries from within the index are allowed, so no custom query images can be uploaded. The backend is plain LIRE, so there’s no search server and alike, and it’s the current SVN version. Search is done based on hashing, so the results are approximate, but they are immediately there. Also it’s just a selection of global features, but it’s enough to get the idea. The image below shows the result of two example searches.
LireDemo 0.9.1 was released earlier today. Changes include several bug fixes, whereas the most critical was the one that prevented the indexing process from indexing a whole directory. Also the an SVN version of Lire has been compiled and added.
Finally I found some time to go through Lire and fix several of the — for me — most annoying bugs. While this is still work in progress I have a preview with the demo uploaded to sf.net. New features are:
- Auto Color Correlogram and Color Histogram features improved
- Re-ranking based on different features supported
- Enhanced results view
- Much faster indexing (parallel, use -server switch for your JVM)
- Much faster search (re-write of the searhc code in Lire)
- New developer menu for faster switching of search features
- Re-ranking of results based on latent semantic analysis
You can find the updated Lire Demo along with a windows launcher here, Mac and Linux users please run it using “java -jar … ” or double click (if your windows manager supports actions like that 🙂
The source is — of course — GPL and available in the SVN.