South China Normal University
China
For the special group of hearing-impaired people, the impact of visual resources on their learning and life cannot be ignored. The vivid image of visual resources has a more positive significance for the cognitive and social development of hearing-impaired people. However, due to hearing impairment and cognitive difficulties, hearing-impaired children often suffer from cognitive load and errors in information perception when they receive visual information. From the perspective of barrier-free communication of information, the design of visual resources suitable for hearing-impaired children is still an issue on which there has been less concern.
Videos with vivid and direct images are loved deeply by the deaf, and play an active role in recognition development and socialization. However, affected by many elements including hearing loss, deaf people face obstacles in processing information multiple times, and the video content cannot be accepted and understood effectively. Guided by adaptive learning requirements, this paper constructs an adaptive subtitle-rendering model suitable for deaf people’s cognitive style, degree of hearing loss, learning path and learning preference – and explains its key characteristics.
Based on adaptive learning requirements, a barrier-free caption design model was developed for the deaf, which supports adjustment to a subtitle style and speed dynamics, the formation of subtitle labels, a knowledge tree diagram, as a rhythm display. To provide a reference for deaf video barrier-free caption design, this was analyzed in combination with the Greek IEP project.
Finally, the future research directions of visualization technology for application to hearing-impaired group education are as follows: research on compensation functions based on the user model; adaptive visualization of artificial intelligence; visualization of the mixed learning process; visualization of thinking; and visualization of evaluation and diagnosis. The findings in this paper provide researchers with practical guidance on visualization tools for hearing-impaired education products.