인지과학 (Korean Journal of Cognitive Science)
- 제22권4호
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- Pages.347-364
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- 2011
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- 1226-4067(pISSN)
시각 자극 복원을 위한 비음수 행렬 분해 기반의 영상 기저 자동 추출
Automatic Extraction of Image Bases Based on Non-Negative Matrix Factorization for Visual Stimuli Reconstruction
- Cho, Sung-Sik (Dept. of Computer Science and Engineering) ;
- Park, Young-Myo (Interdisciplinary Graduate Program in Bioinformatics) ;
- Lee, Seong-Whan (Dept. of Brain and Cognitive Engineering, Korea University)
- 투고 : 2011.08.01
- 심사 : 2011.12.06
- 발행 : 2011.12.30
초록
본 논문에서는 fMRI를 사용하여 뇌신경 반응을 측정한 후, 자극으로 주어진
In this paper, we propose a automatic image bases extraction method for visual image reconstruction from brain activity using Non-negative Matrix Factorization (NMF). Image bases are basic elements to construct and present a visual image. Previous method used brain activity that evoked by predefined 361 image bases of four different sizes:
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