Файл:Gunshot detection in audio streams from movies by means of dynamic programming and bayesian networks 1454.pdf

Материал из Материалы по машинному обучению
Перейти к: навигация, поиск
Gunshot_detection_in_audio_streams_from_movies_by_means_of_dynamic_programming_and_bayesian_networks_1454.pdf(0 × 0 пикселей, размер файла: 350 КБ, MIME-тип: application/pdf)

Aggelos Pikrakis Dept. of Informatics University of Piraeus, Greece e-mail: pikrakis@unipi.gr URL: http://www.unipi.gr

Theodoros Giannakopoulos and Sergios Theodoridis Dept. of Informatics and Telecommunications University of Athens, Greece e-mail: {tyiannak, stheodor}@di.uoa.gr URL: http://www.di.uoa.gr/dsp


ABSTRACT

This paper treats gunshot detection in audio streams from movies as a maximization task, where the solution is obtained by means of dynamic programming. The proposed method seeks the sequence of segments and respective class labels, i.e., gunshots vs. all other audio types, that maximize the product of posterior class label probabilities, given the segments’ data. The required posterior probabilities are estimated by combining soft classification decisions from a set of Bayesian Network combiners. Tests that have been performed on a large set of audio streams indicate that the proposed method yields high performance in terms of both precision and recall of detected gunshot events.

Index Terms — Gunshot Detection, BNs, Dynamic Programming

История файла

Нажмите на дату/время, чтобы просмотреть, как тогда выглядел файл.

Дата/времяРазмерыУчастникПримечание
текущий16:19, 26 июня 20170 × 0 (350 КБ)Slikos (обсуждение | вклад)
  • Вы не можете перезаписать этот файл.

Нет страниц, ссылающихся на данный файл.