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Updated: Mar 7, 2026

Author Spotlight: Addressing Technical and Subjective Challenges in Measuring Classroom Attention
Published on: December 15, 2023
Ji Woo Lee1, Hyung Gil Hong2, Ki Wan Kim3
1Division of Electronics and Electrical Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea. ljwgs@dongguk.edu.
Real money transactions are vital, with automated machines essential for processing. This review covers banknote recognition, counterfeit detection, serial number recognition, and fitness classification, highlighting techniques and challenges.
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