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경계 적응적인 배경 적분 기반의 다중 랜덤 스프레이 레티넥스
배희원(Hui-Won Bae),이성학(Sung-Hak Lee) 한국정보기술학회 2020 한국정보기술학회논문지 Vol.18 No.1
The retinex method is a typical tone mapping algorithm for compressing images into narrow dynamic range reflecting the color constancy and wide dynamic range properties of human vision. Among them, Random Sprays Retinex(RSR) improves sampling noise and computation cost regardless of path. The conventional method of Light Randon Spryas Retinex(LRSR) is proposed for color correction and brightness adjustment over RSR, but tends to distort the original color by processing them in the RGB color space. In this paper, we proposed an adaptive compensation algorithm for local area based on the conformal visual characteristics using multiple scales to reduce noise and improve light intensity degradation. It preserves original colors and provides good tone rendition including an adaptive gamma compensation function for gamma adjustment using visual system and a function for preserving colors of the original image.
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인공와우이식 청년의 의사소통 능력 향상을 위한 스크립트 기반의 청능훈련 도구 개발 및 효과에 대한 예비평가
윤다정(Da Jung Yun),배희원(Hui Won Bae),김 진(Jin Kim),이영미(Young-mee Lee) 한국청각언어재활학회 2018 Audiology and Speech Research Vol.14 No.4
Purpose: The purpose of the current study was to develop the script-based materials for auditory training and to investigate the effects of script-based auditory training for congenitally deaf young adults with cochlear implants (CIs). Methods: A total of eight scripts were developed based on the literature review and the survey for speech-language pathologists, adults with normal hearing (NH), and adults with CIs. For validation of the materials, words and sentences of auditory training tool were examined using the four-point Likert scale by 35 adults with NH, and words and sentences below 2 point were removed and replaced from the script. For evaluating the efficacy of the training, three adults with CIs attended the auditory training individually, two times per a week for 4 weeks. Their speech recognition skills and subjective communicative satisfaction were evaluated before and after auditory training, and analyzed using a one group pretest and post test design. Results: Although there were not significant increases in the speech recognition scores at the word and sentence level, there were significant increases in the overall communicative satisfaction on the results of the questionnaire. Conclusion: The current study suggests that auditory training using the script-based materials is useful in improving overall communicative satisfaction for young CI users who have limited communication skills.
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