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Dongjin Seo is a robotics researcher whose work centers on real-time object tracking and following for mobile robots, with a particular emphasis on sensor-driven control systems. His most influential contribution, "A Method for Real Time Target Following of a Mobile Robot Using Heading and Distance Information" (2008, 15 citations), introduced a two-stage approach that uses histogram-based sensor data to determine a target’s position in the robot’s coordinate frame, then computes translational and rotational velocities for smooth pursuit. This foundational work established a framework that Seo has systematically refined over a decade. In subsequent studies, he advanced the field by replacing ultrasonic sensors with Ultra Wide Band (UWB) distance sensor systems, as demonstrated in "Object following method for a differential type mobile robot based on Ultra Wide Band distance sensor system" (2017, 6 citations), which uses a tag and two anchors to derive both distance and angle for more accurate tracking. His research also extends to modular robot implementation, including the development of an EtherCAT-based motor driver network for real-time control. While his citation counts are modest, Seo’s work represents a sustained, incremental contribution to practical mobile robot navigation, offering reproducible methods for differential drive platforms that continue to inform sensor-based tracking systems in robotics.