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• W2101867763 abstract "본 논문에서는 영상의 선명도를 영상의 주파수 도메인 정보를 이용하여 측정하는 새로운 무기준법 화질 평가 방법을 제안한다. 기존에, 영상에 대한 선명도는 일반적으로 영상의 픽셀 값을 이용하여 측정되었다. 제안된 방법은 기존 방법과 달리 영상에 대한 선명도를 주파수 도메인 정보를 이용하여 측정하였다. 주파수 도메인에서 선명도를 평가하기 위하여 주어진 영상은 가우시안 저주파 필터를 사용하여 열화 되고, 열화 영상과 주어진 영상의 주파수 영역 계수를 사용하여 새로운 선명도 평가 함수를 정의하였다. 제안된 방법의 성능 검증은 TID2008 화질 평가 데이터베이스를 사용하여 이루어졌다. 기존 무기준법 영상 선명도 평가 방법과 비교하였을 때, 제안된 선명도 평가 방법은 주관적 화질 점수와 보다 높은 상관도를 보였다. In this paper, a new no-reference sharpness measure using frequency domain coefficients is proposed. Although most existing sharpness measures used pixel intensity to compute the blur degree, the proposed sharpness measure computes the sharpness using frequency coefficients. To assess the perceived sharpness of a given image, the image is re-blurred by a Gaussian low pass filter and a new quality measure function was defined using the frequency domain coefficients of the given image and the re-blurred image. To evaluate the proposed algorithms, TID2008 quality assessment database was used. Experimental results show that the proposed quality assessment method showed high correlation with the subjective scores." @default.
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• W2101867763 date "2011-05-30" @default.
• W2101867763 modified "2023-10-01" @default.
• W2101867763 title "Sharpness Measure Based on the Frequency Domain Information" @default.
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• W2101867763 doi "https://doi.org/10.5909/jeb.2011.16.3.552" @default.
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