Collaborative multimodal photo annotation over digital paper

The availability of metadata annotations over media content such as photos is known to enhance retrieval and organization, particularly for large data sets. The greatest challenge for obtaining annotations remains getting users to perform the large amount of tedious man-ual work that is required. In this paper we introduce an approach for semi-automated labeling based on extraction of metadata from naturally occurring conversa-tions of groups of people discussing pictures among themselves. As the burden for structuring and extracting metadata is shifted from users to the system, new recognition challenges arise. We explore how multimodal language can help in 1) detecting a con-cise set of meaningful labels to be associated with each photo, 2) achieving robust recognition of these key semantic terms, and 3) facilitating label propagation via multimodal shortcuts. Analysis of the data of a preliminary pilot collection suggests that hand-written labels may be highly indicative of the semantics of each photo, as indicated by the correlation of handwritten terms with high frequency spoken ones. We point to initial directions explor-ing a multimodal fusion technique to recover robust spelling and pronunciation of these high-value terms from redundant speech and handwriting