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2篇 您的检索式:作者名="GUAN Yurong"
    题名 作者 年代 出处 被引量
1A Dual-Tree Complex Wavelet Transform-Based Model for Low-Illumination Image Enhancement显示文摘Image enhancement is a monumental task in the field of computer vision and image processing.Existing methods are insufficient for preserving naturalness and minimizing noise in images.This article discusses a technique that is based on wavelets for optimizing images taken in low-light.First,the V channel is created by mapping an image’s RGB channel to the HSV color space.Second,the acquired V channel is decomposed using the dual-tree complex wavelet transform(DT-CWT)in order to recover the concentrated information within its high and low-frequency subbands.Thirdly,an adaptive illumination boost technique is used to enhance the visibility of a low-frequency component.Simultaneously,anisotropic diffusion is used to mitigate the high-frequency component’s noise impact.To improve the results,the image is reconstructed using an inverse DT-CWT and then converted to RGB space using the newly calculated V.Additionally,images are white-balanced to remove color casts.Experiments demonstrate that the proposed approach significantly improves outcomes and outperforms previously reported methods in general.GUAN Yurong Muhammad Aamir Ziaur Rahman Zaheer Ahmed Dayo Waheed Ahmed Abro Muhammad Ishfaq HU Zhihua 2021Wuhan University Journal of Natural Sciences2021,26,5:1
2Influence of PrP 106―126 on expression of laminin and fibronectin in astrocyte显示文摘Astrogliosis is a hallmark of prion disease, but the metabolic alterations of astrocytes remain poorly documented. A synthetic peptide corresponding to amino acid 106―126 of the human prion protein (PrP) has been shown to be toxic to neurons. In this study, the effects of PrP 106―126 on astrocytes were investigated in vitro. The proliferation of astrocytes was significantly (P < 0.05) increased when grown in media conditioned with PrP 106―126 (80 μmol/L) from microglia. The expression of laminin (LN) and fibronectin (FN) was examined at both mRNA and protein levels. The results showed that ex- posure of astrocytes to PrP 106―126 enhanced the expression of LN and FN. The increase of FN in astrocyte cultures required cytokines previously released by activated microglia. This study reveals the expression of LN and FN affected by PrP106―126.LI YuRong GUAN LeLuo YANG JianMin ZHOU XiangMei YIN XiaoMin ZHAO DeMing 2008Chinese Science Bulletin2008,53,14:0
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