A review on computational methods based automated sign language recognition system for hearing and speech impaired community

The recent advancements in computer vision and deep learning have led to promising progress in various motion detection and gesture recognition methods. Thriving efforts in the field of sign language recognition (SLR) during recent years led to interaction between humans and computer systems. Contributing a real-time automated Sign Language recognition system will be a remarkable treasure for hearing and speech-impaired people that will break the barriers of interaction with the real world. Albeit several research works are accomplished in sign language recognition, there is still a demand for developing a real-time automated sign language recognition system. Compared to other methodologies, the techniques adopted may have advantages and disadvantages, and they vary from researcher to researcher. There are still some issues with employing these SLR models and procedures regularly, even though numerous research studies have been conducted to determine the most acceptable methods and models for sign language recognition. It gets more expensive and difficult in terms of resources when the developed automated SLR system becomes available as a product. Hence, for the welfare of the hearing and speech-impaired community, the researchers are still endeavoring way to find a cost-effective method. This work brings forth the challenges faced by scientists in developing a cost-effective commercial prototype for the hearing and speech-impaired community. This paper also explores and analyses various deep learning techniques and methods used in developing a sign language recognition system. The objective behind this work is to identify the best method which produces high accuracy in developing a cost-effective sign language recognition system aiding communication between signers and non-signers so that they can be a part of growing technology.