Automatic speech recognition systems perform on acoustic speech signals and therefore they are unreliable in noisy environments. Visual speech features such as lip movements of a speaker can make the speech recognition system robust. To track the lip movements, lip contour extraction is a necessary step and plays a crucial role in the visual speech recognition. In this paper, we propose a new method for lip contour extraction using fuzzy clustering with elliptic shape information and active contour model. In this method, we combined both image and model based methods to improve the performance of lip contour extraction. Our proposed lip contour extraction method outperforms few of existing lip contour extraction methods. We applied our lip contour extraction method on 3600 lip images from VidTimit database and results are found better than the few existing lip contour extraction methods.
is a viral disease that has been spreading rapidly infects both human beings and animals. The lifestyle of people, their physical and mental well-being and the economic condition of a country are distressingly disturbed due to the viral disease. Recently, vaccines have been prepared for COVID-19 which have quite winning results. Yet we are unsure about the long-term effects of the vaccine. In a clinical study of COVID-19 infected patients shows that the covid patients are more likely to be infected from a lung infection after coming in contact with the virus. Chest x-ray (i.e., radiography) and chest computed tomography (CT) are a more effective imaging technique for diagnosing lung related problems. Yet, a significant chest x-ray is a lower cost process in comparison to chest CT. Adding to the previous statement, a chest X-ray helps to identify unusual and abnormal formations of a large variety of chest diseases such as pneumonia, cystic fibrosis, emphysema, cancer, etc. Deep learning is the most successful technique of machine learning, which provides useful analysis that can detect the COVID-19 virus and differentiate between a healthy lung and a virus infected lung successfully. Medical imaging, such as X-rays and CT scans, can aid in the early diagnosis of COVID-19 patients, allowing for more prompt therapy. For prediction, a Convolutional Neural Network (CNN) extracts information from chest x-ray pictures has been done. In order to classify an image as COVID or normal we need to have a segmented target so as to obtain this we use filters so that we can get the edge of the image. Keras Image Data Generator class is used to generate augmented images. Classification is performed with two classes: COVID-19 and Normal.
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