全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Qiegen Liu , Jiaojiao Xiong ...
来源:[J].Multimedia Tools and Applications(IF 1.014), 2017, Vol.76 (12), pp.14055-14074Springer
摘要:The RGB2GRAY conversion model is the classical and most popularly used tool for image decolorization. Recent researches have validated that optimally selecting the three weighting parameters in this first-order linear model has great potential to improve its conversion abili...
作者:Qiegen Liu , Jianbo Liu ...
来源:[J].EURASIP Journal on Advances in Signal Processing(IF 0.807), 2014, Vol.2014 (1), pp.1-9Springer
摘要:Abstract(#br)We propose a novel image contrast enhancement method via non-convex gradient fidelity-based (NGF) variational model which consists of the data fidelity term and the NGF regularization. The NGF prior assumes that the gradient of the desired image is close to the multi...
作者:Qiegen Liu , Qingjiang Shi
来源:[J].EURASIP Journal on Advances in Signal Processing(IF 0.807), 2012, Vol.2012 (1), pp.1-10Springer
摘要:Abstract(#br)In this article, an iterative regularization model (IRM) with adaptive parameter is addressed. IRM has gained a lot of attentions. But constant scale parameter becomes very sensitive for the fast convergence. It becomes very important to optimize the scale parameter ...
作者:Qiegen Liu , Jianhua Luo ...
来源:[J].EURASIP Journal on Advances in Signal Processing(IF 0.807), 2011, Vol.2011 (1), pp.1-16Springer
摘要:Abstract(#br)Learning overcomplete dictionaries for sparse signal representation has become a hot topic fascinated by many researchers in the recent years, while most of the existing approaches have a serious problem that they always lead to local minima. In this article, we pres...
作者:Qiegen Liu , Yuhao Wang
来源:[J].Remote Sensing(IF 2.101), 2016, Vol.8 (6)DOAJ
摘要:Because of the contradiction between the spatial and temporal resolution of remote sensing images (RSI) and quality loss in the process of acquisition, it is of great significance to reconstruct RSI in remote sensing applications. Recent studies have demonstrated that reference i...
作者:Qiegen Liu , Biao Xiong , Minghui Zhang
来源:[J].Mathematical Problems in Engineering(IF 1.383), 2014, Vol.2014DOAJ
摘要:In computer vision and graphics, it is challenging to decompose various texture/structure patterns from input images. It is well recognized that how edges are defined and how this prior information guides smoothing are two keys in determining the quality of image smoothing. ...
作者:... Hongyang Lu , Qiegen Liu , Xiaoling Xu
来源:[J].Multimedia Tools and Applications(IF 1.014), 2018, Vol.77 (12), pp.15721-15745Springer
摘要:Abstract(#br)Decolorization is a fundamental technology indispensable for image processing, digital printing, and photograph rendering, while it suffers from information loss. This paper presents a novel parametric ratio-based method for efficient contrast-preserving decolorizati...
作者:Qiegen Liu , Minghui Zhang
来源:[J].Multimedia Tools and Applications(IF 1.014), 2019, Vol.78 (15), pp.21981-21998Springer
摘要:Abstract(#br)Recent researches have shown that deep convolutional neural networks can significantly boost the performance of single-image super-resolution (SISR). In particular, residual network and densely convolutional network can improve performance remarkably. The residual ne...
作者:Qiegen Liu , Biao Xiong ...
来源:[J].Multimedia Tools and Applications(IF 1.014), 2016, Vol.75 (13), pp.7909-7930Springer
摘要:Abstract(#br)Recently, two piecewise smooth models L0smoothing and relative total variation (RTV) have been proposed for feature/structure-preserving filtering. One is very efficient for tackling image with little texture patterns and the other has appearance performance on image...
作者:... Jinqiang Zhu , Qiegen Liu , Ye Zhang
来源:[J].Multimedia Tools and Applications(IF 1.014), 2015, Vol.74 (23), pp.10697-10711Springer
摘要:Abstract(#br)In order to detect the number of audio sources and improve the speech recognition capability of an intelligent robot auditory system, recognizing human mouth-states, open or closed, is studied in this paper. A discriminative dictionary and sparse representation combi...

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