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Adaptive intra mode decision for HEVC based on texture characteristics and multiple reference lines 期刊论文  OAI收割
MULTIMEDIA TOOLS AND APPLICATIONS, 2019, 卷号: 78, 期号: 1, 页码: 289-310
作者:  
Zhang, Yongfei;  Tian, Rui;  Li, Xi;  Duan, Miyi
  |  收藏  |  浏览/下载:56/0  |  提交时间:2019/04/03
Stimulation of N2O emission by manure application to agricultural soils may largely offset carbon benefits: a global meta-analysis 期刊论文  OAI收割
GLOBAL CHANGE BIOLOGY, 2017, 卷号: 23, 期号: 10, 页码: 4068-4083
作者:  
Zhou, Minghua;  Zhu, Bo;  Wang, Shijie;  Zhu, Xinyu;  Vereecken, Harry
  |  收藏  |  浏览/下载:50/0  |  提交时间:2017/10/10
A time-dependent quantum dynamical study of the O(P-3) + D-2(+) -> OD+ + D reaction 期刊论文  OAI收割
CHEMICAL PHYSICS LETTERS, 2017, 卷号: 676, 页码: 77-81
作者:  
Yi-Wang;  Zhang, Ai-jie;  Zang, Kai-lu;  Jia, Jian-feng;  Wu, Hai-shun
收藏  |  浏览/下载:114/0  |  提交时间:2017/10/29
Stimulation of N2O emission by manure application to agricultural soils may largely offset carbon benefits: a global meta-analysis 期刊论文  OAI收割
Global Change Biology, 2017, 卷号: 23, 期号: 10, 页码: 4068-4083
作者:  
Minghua Zhou;  Bo Zhu;  Shijie Wang;  Xinyu Zhu;  Harry Vereecken;  Nicolas Brüggemann
  |  收藏  |  浏览/下载:25/0  |  提交时间:2018/07/05
Research on infrared dim-point target detection and tracking under sea-sky-line complex background (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:  
Dong Y.-X.;  Zhang H.-B.;  Li Y.;  Li Y.;  Li Y.
收藏  |  浏览/下载:111/0  |  提交时间:2013/03/25
Target detection and tracking technology in infrared image is an important part of modern military defense system. Infrared dim-point targets detection and recognition under complex background is a difficulty and important strategic value and challenging research topic. The main objects that carrier-borne infrared vigilance system detected are sea-skimming aircrafts and missiles. Due to the characteristics of wide field of view of vigilance system  the target is usually under the sea clutter. Detection and recognition of the target will be taken great difficulties.There are some traditional point target detection algorithms  such as adaptive background prediction detecting method. When background has dispersion-decreasing structure  the traditional target detection algorithms would be more useful. But when the background has large gray gradient  such as sea-sky-line  sea waves etc.The bigger false-alarm rate will be taken in these local area.It could not obtain satisfactory results. Because dim-point target itself does not have obvious geometry or texture feature  in our opinion  from the perspective of mathematics  the detection of dim-point targets in image is about singular function analysis.And from the perspective image processing analysis  the judgment of isolated singularity in the image is key problem. The foregoing points for dim-point targets detection  its essence is a separation of target and background of different singularity characteristics.The image from infrared sensor usually accompanied by different kinds of noise. These external noises could be caused by the complicated background or from the sensor itself. The noise might affect target detection and tracking. Therefore  the purpose of the image preprocessing is to reduce the effects from noise  also to raise the SNR of image  and to increase the contrast of target and background. According to the low sea-skimming infrared flying small target characteristics  the median filter is used to eliminate noise  improve signal-to-noise ratio  then the multi-point multi-storey vertical Sobel algorithm will be used to detect the sea-sky-line  so that we can segment sea and sky in the image. Finally using centroid tracking method to capture and trace target. This method has been successfully used to trace target under the sea-sky complex background. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Adaptive Image Segmentation based on Fast Thresholding and Image Merging (EI CONFERENCE) 会议论文  OAI收割
16th International Conference on Artificial Reality and Telexistence - Workshops, ICAT 2006, November 29, 2006 - December 1, 2006, Hangzhou, China
作者:  
Zhang Y.;  Wang Y.;  Wang Y.;  Wang Y.;  Wang Y.
收藏  |  浏览/下载:14/0  |  提交时间:2013/03/25
Image segmentation is the first essential and important step of low level vision. This paper proposes a novel algorithm for adaptive image segmentation  it can be applied in many conditions  based on thresholding technique and segments merging according to their characteristics combine with spatial position. Our earlier work of getting the entire information of the histogram could help choose the multiple thresholds. However  including complex target segmented. We describe the algorithm in detail and perform simulation experiments. The computation based on pixels can fully parallel processing to save time. 2006 IEEE.  not all the peaks of the histogram correspond to obvious structural unit in the image. Spatial information must be involved. This paper also suggests subjoining segments matching for video image tracking. They will give great help to image segmentation. The proposed algorithm can meet the real-time requirement and lead to higher segmentation accuracy  some types of texture can also be segmented well  
V-shaped electro-optic characteristics in FLC gels (EI CONFERENCE) 会议论文  OAI收割
作者:  
Li J.;  Li J.;  Li J.;  Xuan L.
收藏  |  浏览/下载:32/0  |  提交时间:2013/03/25
The effects of polymer network formed under UV irradiation with electric field application ( 50V  5Hz) to ferroelectric liquid crystal (FLC) molecules orientation and electrooptic characteristics have been studied. The polymer network formed in SmC*phase is anisotropic and fibrils-like  and a typical striped texture was observed in the cell. The FLC gels exhibit a symmetric V-shaped electrooptic characteristics with thresholdless voltage and high contrast ratio (40:1). A theory explanation of the unique properties is given by establishing a molecular orientation model and conducting a computer simulation. A good fitting of the electrooptic dynamic response of FLC gels has been obtained by introducing a potential (bulk anchoring energy) originated from the photo-cured polymer network. 2002 Taylor Francis.