|Tipo di prodotto||Progetto|
|Titolo||European CHronicles On-line e Technology Implementation Plan|
|Anno di pubblicazione||2003|
|Affiliazioni autori||CNR-ISTI, Pisa, Italy|
|Autori CNR e affiliazioni|
|Sintesi||The ECHO (http://pc-erato2.iei.pi.cnr.it/echo/) Digital Library system supports the indexing and retrieval of A/V documentaries. The indexing is semi-automatic. Using a high-quality speech recogniser, the sound track of each video source is converted to a textual transcript, and then stored in a full-text information retrieval system. Likewise, video and image analysis techniques are used for extracting visual features and segmenting video sequences by automatically locating boundaries of shots, scenes, and conversations. Metadata (described according to the ECHO metadata model) are then manually associated with film documentaries in order to complete their classification. Search and retrieval on wide area networks is performed by expressing queries on the audio transcript, on metadata or by image similarity retrieval. Retrieved documentaries or their abstract, are then presented to the user.|
|Lingua altra sintesi||-|
|Parole chiave||Audio/video, Digital Library, Metadata model, Video retrieval|
|Link (URL, URI)||-|
|Note/Altre informazioni||The project started in February 2000 and has been completed in May 2003. ISTI-CNR was the project coordinator. The aim of the project was to develop a long-term reusable software infrastructure providing Web-based access to film collections, and to set up and run an ECHO digital library service.
The TIP describes in detail all project results, in terms of guidelines, software components, models, etc. In particular, the report describes the following outcomes: (1) User requirements analysis. (2) Document video test collection. (3) Audio/video Metadata model. (4) Audio/video Metadata editor. (5) Automatic speech recognition components (Italian, French, Dutch) (6) Cross-language retrieval component. (7) Automatic video summary generation module. (8) ECHO Audio/video Digital Library system prototype. (9) System evaluation and field trials.|
- ISTI — Istituto di scienza e tecnologie dell'informazione "Alessandro Faedo"