Comparison of Handcrafted and Deep Neural Network Feature Extraction for Recognizing Bangla Sign Digits Exploiting Machine Learning Classifiers. - Shamim Mahbub; Md Ferdous Wahid; Sheikh Md. Shafiqul Islam; Tasnim Ara Elahi; Md. Fahim Shahriar; Md. Al Mamunur Rashid (ICCCNT, 2021)