TAILIEUCHUNG - Báo cáo hóa học: "Research Article Enabling Seamless Access to Digital Graphical Contents for Visually Impaired Individuals via Semantic-Aware Processing"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Enabling Seamless Access to Digital Graphical Contents for Visually Impaired Individuals via Semantic-Aware Processing | Hindawi Publishing Corporation EURASIP Journal on Image and Video Processing Volume 2007 Article ID 18019 14 pages doi 2007 18019 Research Article Enabling Seamless Access to Digital Graphical Contents for Visually Impaired Individuals via Semantic-Aware Processing Zheshen Wang Xinyu Xu and Baoxin Li Department of Computer Science and Engineering School of Computing and Informatics Arizona State University Tempe AZ 85287-8809 USA Received 15 January 2007 Revised 2 May 2007 Accepted 20 August 2007 Recommended by Thierry Pun Vision is one of the main sources through which people obtain information from the world but unfortunately visually impaired people are partially or completely deprived of this type of information. With the help of computer technologies people with visual impairment can independently access digital textual information by using text-to-speech and text-to-Braille softwares. However in general there still exists a major barrier for people who are blind to access the graphical information independently in real time without the help of sighted people. In this paper we propose a novel multilevel and multimodal approach aiming at addressing this challenging and practical problem with the key idea being semantic-aware visual-to-tactile conversion through semantic image categorization and segmentation and semantic-driven image simplification. An end-to-end prototype system was built based on the approach. We present the details of the approach and the system report sample experimental results with realistic data and compare our approach with current typical practice. Copyright 2007 Zheshen Wang et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Visual information in digital form has become widely available with the prevalence of computers and the Internet. A .

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