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Automatic Speech Recognition plays an important role in human-computer interaction, which can be applied in various vital applications like crime-fighting and helping the hearing-impaired. This paper provides a new method for recognition of Bengali visemes based on a combination of image-based lip segmentation techniques, use of curvature of the both inner and outer lips as well as neural networks. The method is divided into three steps. First step is a lip segmentation step that uses afatcat:wuzdum5bknfwff3ap5czeqiori