Visual-speech-pass filtering for robust automatic lip-reading.

Autor:	Lee, Jong-Seok
Předmět:	COMPUTER vision PATTERN recognition systems SPEECH perception LIPREADING INFORMATION filtering FEATURE extraction ROBUST control
Zdroj:	Pattern Analysis & Applications; Aug2014, Vol. 17 Issue 3, p611-621, 11p
Abstrakt:	This paper proposes a temporal filtering technique used in extraction of visual features for improved robustness of automatic lip-reading, called visual-speech-pass filtering. A band-pass filter is applied to the pixel value sequence of the images containing the speaker's lip region to remove unwanted variations that are not relevant to the speech information. The filter is carefully designed based on psychological, spectral, and experimental analyses. Experimental results on two speaker-independent and one speaker-dependent recognition tasks demonstrate that the proposed technique significantly improves recognition performance in both clean and visually noisy conditions. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu Full text from SpringerLink