Using Compressed Audio-visual Words for Multi-modal Scene Classification

Kurcius, J.J.; Breckon, T.P.

Abstract

We present a novel approach to scene classification using combined audio signal and video image features and compare this methodology to scene classification results using each modality in isolation. Each modality is represented using summary features, namely Mel-frequency Cepstral Coefficients (audio) and Scale Invariant Feature Transform (SIFT) (video) within a multi-resolution bag-of-features model. Uniquely, we extend the classical bag-of-words approach over both audio and video feature spaces, whereby we introduce the concept of compressive sensing as a novel methodology for multi-modal fusion via audio-visual feature dimensionality reduction. We perform evaluation over a range of environments showing performance that is both comparable to the state of the art (86%, over ten scene classes) and invariant to a ten-fold dimensionality reduction within the audio-visual feature space using our compressive representation approach.

Citation

Kurcius, J., & Breckon, T. (2014, November). Using Compressed Audio-visual Words for Multi-modal Scene Classification. Presented at Proc. International Workshop on Computational Intelligence for Multimedia Understanding

• Presentation Conference Type: Conference Paper (published)
• Conference Name: Proc. International Workshop on Computational Intelligence for Multimedia Understanding
• Publication Date: 2014
• Deposit Date: Dec 9, 2014
• Publicly Available Date: Feb 4, 2015
• Publisher: Institute of Electrical and Electronics Engineers
• Pages: 1-5
• Book Title: Proc. International Workshop on Computational Intelligence for Multimedia Understanding
• DOI: https://doi.org/10.1109/IWCIM.2014.7008808
• Keywords: multi-resolution, bag of words, MFCC, compressed sensing, audio-visual, multi-modal, random projection matrix
• Public URL: https://durham-repository.worktribe.com/output/1153679
• Publisher URL: https://breckon.org/toby/publications/papers/kurcius14audiovisual.pdf