감각 치환 기술은 뇌 가소성에 기반하여 손상되거나 저하된 감각의 정보를 다른 형태의 감각으로 전환하여 전달함으로써 감각을 지각할 수 있도록 하는 기술이다. 본 논문에서는 감각 치환 기술 중 가장 대표적인 시각-청각 변환기술을 묵시적 방법과 명시적 방법으로 구분하여 기술적 특징을 분석하였다. 또한, 166명의 시각장애인을 대상으로 설문조사를 수행하여 시각-청각 변환기술을 통하여 전달받기 원하는 시각 정보들의 선호도를 분석하였다. 기존 기술 분석 및 설문조사 결과를 종합하면 기존 기술은 주로 모양에 관련된 정보를 전달하지만, 실제 시각장애인들은 보행을 위한 거리 및 공간 정보를 요구하여 현재 기술과 사용자의 요구사항에 차이가 있음을 확인하였다. 본 논문의 분석 결과는 감각 치환 장치들이 향후 실생활에 사용되기 위해 극복하여야 할 여러 가지 기술적 이슈들을 해결하기 위한 기본 자료로 활용될 수 있다.
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