1. Ahmed H, Gilani SO, Jamil M, Ayaz Y, Shah SIA (2016) Monocular vision-based signer-independent Pakistani sign-language recognition system using supervised learning. Indian J Sci Technol 9(25):1–16
2. Ali SA (2013) Detection of Urdu sign language using harr algorithms. Int J Invent Eng Sci (IJIES) 1(6):50–54
3. Alvi AK, Azhar MYB, Usman M, Mumtaz S, Rafiq S, Rehman RU, Ahmed I (2004) Pakistan sign language recognition using statistical template matching. Int J Inf Technol 1(1):1–12
4. Alzohairi R, Alghonaim R, Alshehri W, Aloqeely S, Alzaidan M, Bchir O (2018) Image based Arabic sign language recognition system. Int J Adv Comput Sci Appl (IJACSA) 9(3):185–194
5. Bagheri MA, Gao Q, Escalera S (2012) Efficient pairwise classification using local cross off strategy. In: Canadian conference on artificial intelligence, Springer, pp 25–36