Technology-Driven Innovation and Contextual Adaptation: Research on Multidimensional Applications of Virtual Digital Humans in International Communication

The rapid advancement of technologies such as artificial intelligence, computer graphics, and natural language processing has positioned virtual digital humans (VDHs) as key actors in international communication. This study examines the technological drivers, scenario reconstruction patterns, and multidimensional applications of VDHs in this domain, analyzing practical cases in areas such as intercultural communication, broadcast journalism, and educational entertainment. The research also highlights ethical risks, cultural adaptation challenges, and technological limitations associated with VDH deployment. It indicates that VDHs contribute to technological facilitation, scenario simulation, and cultural adaptation in global communication. However, they also encounter challenges, including cultural differences, misinformation, privacy breaches, and technological constraints. The study proposes corresponding strategies to address these issues. It is anticipated that, in the future, VDHs will assume a more central role in intelligent, personalized, and globalized communication. Strategies such as optimizing design with cultural considerations, establishing ethical frameworks, enhancing technology R&D, and integrating blockchain and localization can improve the deployment of VDHs in international communication.