Detection of Emergency Words with Automatic Image Based Lip Reading Method


lip reading, Convolutional neural network, SSD


Lip reading automation can play a crucial role in ensuring or enhancing security at noisy and large-scale events such as concerts, rallies, public meetings, and more by detecting emergency keywords. In this study, the aim is to automatically detect emergency words from the lip movements of a person using images extracted from silent video frames. To achieve this goal, an original dataset consisting of silent video images in which 8 emergency words were spoken by different 14 speakers was used. The lip regions of the images obtained from the videos in the dataset were labeled through relevant region detection. Labeled data were then evaluated using the SSD (Single Shot MultiBox Detector) deep learning method. Subsequently, subsets of labeled data with 8, 6, and 4 classes were created. The SSD algorithm was evaluated separately for each of these subsets. During the training of the SSD algorithm, weight initialization methods such as 'he,' 'glorot,' and 'narrow-normal' were used, and their performances were compared. Additionally, the SSD algorithm was trained with two different values of the maxepochs parameter, which were 20 and 30, respectively. According to the results, the lowest accuracy value was found for the 8-class subset, with an accuracy of 42% obtained using 20 epochs of training and the 'narrow-normal' weight initialization method. The highest accuracy value was achieved for the 4-class subset, with an accuracy of 76% obtained using the 30 epochs of training and the 'glorot' weight initialization method.




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  • Published: 2024-03-27

    Issue: Vol. 3 No. 1 (2024) (view)

    Section: Research Articles

    How to cite:
    B. Ülkümen and A. Öztürk, “Detection of Emergency Words with Automatic Image Based Lip Reading Method”, Intell Methods Eng Sci, vol. 3, no. 1, pp. 1–6, Mar. 2024.

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