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| 1 | Scene recognition combining structural and textural features显示文摘Automatic recognition of the contents of a scene is an important issue in the field of computer vision. Although considerable progress has been made, the complexity of scenes remains an important challenge to computer vision research. Most previous approaches for scene recognition are based on the so-called 'bag of visual words' model, which uses clustering methods to quantize numerous local region descriptors into a codebook. The size of the codebook and the selection of initial clustering centers greatly affect the performance. Furthermore, the large size of the codebook leads to high computational costs and large memory consumption. To overcome these weaknesses, we present an unsupervised natural scene recognition approach that is not based on the 'bag of visual words' model. This approach constructs multiple images of different resolutions and extracts structural and textural features from these images. The structural features are represented by weighted histograms of the gradient orientation descriptor, which is presented in this paper, and the textural features are represented by filter responses of Gabor filters and a Schmid set. We regard the structural and textural features as two independent feature channels, and combine them to realize automatic categorization of scenes using a support vector machine. We then evaluated our approach using three commonly used datasets with various scene categories. Our experiments demonstrate that the weighted histograms of the gradient orientation descriptor outperform the classical scale invariant feature transform descriptor in natural-scene recognition, and our approach achieves good performance with respect to current state-of-the-art methods. | ZHOU Li HU DeWen ZHOU ZongTan | 2013 | Science China(Information Sciences)2013，56，7： | 7 |
| 2 | New tetraphenylpyridinium-based luminogens with aggregation-induced emission characteristics显示文摘The research on aggregation-induced emission (AIE) has drawn increasing interests in the past decade. With the efforts scientists paid, a variety of AIE systems have been developed, among which the tetraphenylethelene and silole derivatives are the most studied. Development of new AIE systems could further enrich the AIE molecules and promote the development of AIE area. In this communication, we prepared a new AIE system based on 1,2,4,6-tetraphenylpyridinium ions according to the restriction of intramolecular rotation mechanism. These molecules could be facilely synthesized via one-step and one-pot reaction. The ionic AIE-active molecules could find wide application in sensing and optoelectronic areas. | WANG ZongTan FANG Yuan SUN JingZhi QIN AnJun TANG Ben Zhong | 2013 | Science China Chemistry2013，56，9： | 3 |
| 3 | Right anterior cingulate gyrus in encephalic region associated with integrating and processing Chinese words information in working memory: A functional magnetic resonance imaging study显示文摘BACKGROUND: Many experimental results have been found in previous studies on whether laterality of brain cingulate gyrus exists in processing Chinese words information. OBJECTIVE: To observe the function of right anterior cingulate gyrus and activation showed by MRI in processing Chinese words in a visual working memory judgment tasks, and evaluate the laterality of activated brain regions. DESIGN: Observation experiment. SETTING: The Medical Psychological Research Center, Second Xiangya Hospital of Central South University. PARTICIPANTS: Thirteen healthy volunteers (7 males and 6 females), aged (29±7)years ranging from 23 to 36 years old, participated in this fMRI study during August 2003 to Febuary 2004. They gave informed consent in accordance with guidelines set by Second Xiangya Hospital of Central South University. All subjects were native Chinese speakers and strongly right handed. METHODS: In this study, Chinese numeral words were used as test materials and test mode of Sternberg was used in cognitive task, it was aimed to investigate the encephalic region involved in the storage and processing of Chinese numerical information. ①The head of subject was fixed with dense foam pad. Visual working task was performed according to the requests. Verbal working task was that the subject saw target items for four numerals written in Chinese, presenting for 1.5 s and then, after a short time by blank for 3.0 s. The subject saw one numeral presenting for 1.5 s and had to press one button if it was one of the shown numbers and another button if it did not belong to the presented numbers. There were two visual working memory stimuli in each stimulation block. The experiment was conducted in a single run, which consisted of seven blocks of visual working memory tasks. Different Chinese numerals were displayed in each block to avoid any practice effect (The response rate of the whole working memory task was 50%). ②The activation of brain was scanned with a 1.5T MRI scanner (GE Signa Twinspeed) (slice thickness 5 mm, slice gap 1.5 mm, slice parallel to line between pars geniculate and splenium in corpus callosum from corona capitis to superior part of cerebellum, totally 16 to 18 layers). ③The obtained images were pre-processed and statistically analysed with SPM 99 software. The procedure included timeslice adjusted, realigned, nomalized and smoothed. According to experimental task, data from each subject were analysed to obtain t value of each voxel. Brain activation image was got by Student’s t test and statistic was presented by pseudo-color. Statistical parameter image was formed by overlapping brain activation image on three-dimensional structure image, and the threshold value was set at P < 0.05 with ten or more continous voxels (T ≥ 4.64, K ≥ 10 voxels). The brain activation images of all the subjects were calculated and overlapped into mean brain activation images. The regions with different activation density were found out. The activation voxels in regions-of-interest were checked to calculate a laterality index for each condition. The negative value indicated right hemisphere dominance. MAIN OUTCOME MEASURES: fMRI activation and laterality coefficient of Chinese numerial working task. RESULTS: Thirteen healthy subjects participated in the result analysis. ①fMRI activation of Chinese numerial working task: The results showed that the working memory task with Chinese words not only activated left cerebral cortex including left superior frontal gyrus (BA6/10), left middle frontal gyrus (BA9), left inferior frontal gyrus (BA45/9/47), but also activated right cerebral cortex including right middle frontal gyrus (BA10/46/8), right inferior frontal lobe (BA47). Specially, peak activation was located in right anterior cingulate gyrus (BA32) with an activation volume of 879 (voxels). It indicated that superior, middle and inferior frontal gyrus, bilateral Broca regions and anterior cingutate involved in the working memory of Chinese words. ②Asymmertry index : The asymmetry index was -0.47 for frontal lobe, +0.42 for temporal lobe, +0.14 for parietal lobe and -1.00 for occipital lobe. It indicated that the right frontal lobe, left temporal lobe, left parietal lobe and right occipital lobe were more involved in the Chinese numerial working task. CONCLUSION: Brain activation in processing Chinese words in the visual working memory task broadly involves both the left and right hemisphere cortex. And right anterior cingulate gyrus (BA 32) plays an important role in integrating and processing intensive visuospatial ability. | Daxing Wu Lirong Yan Changlian Tan Dewen Hu Wai Cheong Carl Tam Yadong Liu Zongtan Zhou Xiang Wang Ding Liu Shuqiao Yao | 2006 | Neural Regeneration Research2006，1，5： | 2 |
| 4 | Two-Dimensional Locality Preserving Projections(2DLPP)with Its Application to Palmprint Recogition显示文摘 | Hu Denwen Feng Guiyu Zhou Zongtan | 2007 | Pattern Recognition2007，40，1： | 1 |
| 5 | An alternative formulation of kernel LPP with application to image recognition 显示文摘 | Guiyu Feng Dewen Hu Davisd Zhang Zongtan Zhou | 2006 | Neurocomputing2006，69，： | 1 |
| 6 | Two-Dimensional Locality Preserving Projections (2DLPP) with Its Application to Palmprint Recognition显示文摘 | Hu Dewen Feng Guiyu Zhou Zongtan | | 0，，01： | 1 |
| 7 | Two-dimensional lo- cality preserving projections(2DLPP) with its application to palmprint recognition 显示文摘 | Hu Dewen Feng Guiyu Zhou Zongtan | 2007 | Pattern Recognition2007，40，1： | 1 |
| 8 | A novel task-oriented optimal design for P300 - based brain-computer interfaees显示文摘 | Zhou Zongtan Yin Erwei Liu Yang | 2014 | J NeuralEng2014，11，05： | 1 |
| 9 | A dynamically optimized SSVEP brain-computer interface speller显示文摘 | Erwei Y Zongtan Z Jun J | 2015 | Biomedical Engi- neering IEEE Transactions on2015，62，6： | 1 |
| 10 | Globally Consistent Reconstruction of Ripped-Up Documents显示文摘 | ZHU Liangjia ZHOU Zongtan HU Dewen | 2008 | IEEE Transactions on Pattern Analysis and Machine Intelligence2008，30，1： | 1 |
| 11 | Genetic effects analysis for grain traits of indica rice显示文摘Genetic effects analysis of grain traits was conductedbased on the additive-dominance genetic model(Zhu, 1992, 1993)for the quantitative traits. In-complete diallel crosses from early season indica rice(Oryza sativa L.)were made using eight parentswith short grain shape(Guanglu'ai 4 et al.)as fe-males andfive parents with long grain shape(Xi-angzaoxian 3 et al.)as males. F_1 seedlings and | SHI Chunhai and SHEN Zongtan,Zhejiang Agri Univ,Hangzhou,310029,China | 1995 | Chinese Rice Research Newsletter1995，3，2： | 1 |
| 12 | A Direct Locality Preserving Projections Algorithm for Image Recognition显示文摘 | Feng Guiyu Hu Dewen Zhou Zongtan | 2008 | Neural Processing Letters2008，27，3： | 1 |
| 13 | A novel hybrid BCI speller based on the incorporation of SSVEP into the P300 paradigm 显示文摘 | Yin Eewei Zhou Zongtan Jiang Jun | 2013 | J Neural Eng2013，10，02： | 1 |
| 14 | Processing real-world imagery with FACADE-based approaches显示文摘This paper considers the processing of realworld imagery in the so-called Form-And-Color-And-DEpth(FACADE)framework,which features some superior mechanisms of the human vision system(HVS).FACADE framework was originally proposed by Grossberg et al.as an integrative model of the HVS to illustrate the possible procedures for visual perception of shape(the boundary contour),surface(luminance and color),and binocular depth.As a simplified,reasonable and mathematically full-fledged approach to the HVS,we saw FACADE as a promising infrastructure through which to construct a powerful image processing engine.However,in our attempts to use the approach in its original modality,to deal with real-world imagery,we found it to be inefficient and non-robust.After re-introducing the model hierarchy and illustrating the involved cell dynamics of the FACADE framework,this paper reveals the crucial issues that lead to the deficiency and accordingly present our substitutive solutions by incorporating the mechanisms of anisotropic spatial-and diffusive orientational-competition to make the HVS-featured model efficient and robust.A computer system based on the improved FACADE engine has been implemented and tested not only with illustrative images to highlight the model characteristics,but also with some real-world imagery in both monocular and binocular situations,thereby demonstrating the ability of the FACADE-based image processing approach featuring the HVS. | Dewen HU Zongtan ZHOU Zhengzhi WANG | 2011 | Frontiers of Electrical and Electronic Engineering in China2011，6，1： | 0 |
| 15 | An air-stable supported Cu(?) catalyst for azide-alkyne click polymerization显示文摘An air-stable supported Cu(I) catalyst, Cu I@PS-Phen, was designed and synthesized. Cu I@PS-Phen can efficiently catalyze the click polymerization of diynes a and diazides b to produce soluble and thermally stable polytriazoles with high molecular weights(Mw up to 30800), and low copper residue content(down to 190 ppm) in high yields(up to 94.2%) under mild reaction conditions without the exclusion of oxygen. | Haiqiang Wu Wenhui Dong Zongtan Wang Bicheng Yao Ming Chen Jingzhi Sun Anjun Qin Ben Zhong Tang | 2015 | Science China Chemistry2015，58，11： | 0 |
| 16 | Promotion and Application Prospects of Disruptive Technology in Future Development of Space Industry显示文摘Space is a high-tech field integrating materials,electronic information,manufacture,energy,medicine and other disciplines.A number of disruptive technologies in various fields will have an important influence in areas such as space industry,scientific research on space and even military space.This article focuses on disruptive technologies exerting enormous influence in the space field based on the qualitative and quantitative research of disruptive technologies.The research and application for disruptive space technology is expected to greatly improve the efficiency of space system,significantly reducing research cost,and to promote a great improvement of space technology level. | SUN Zongtan LI Hui JIA Ping YAO Baoyin | 2016 | Aerospace China2016，17，1： | 0 |
| 17 | Giant magneto-impedance sensor with working point selfadaptation for unshielded human bio-magnetic detection显示文摘Background Compared with traditional biomagnetic field detection devices,such as superconducting quantum interference devices(SQUIDs)and atomic magnetometers,only giant magneto impedance(GMI)sensors can be applied for unshielded human brain biomagnetic detection,and they have the potential for application in next-generation wearable equipment for brain-computer interfaces(BCIs).Achieving a better GMI sensor without magnetic shielding requires the stimulation of the GMI effect to be maximized and environmental noise interference to be minimized.Moreover,the GMI effect stimulated in an amorphous filament is closely related to its working point,which is sensitive to both the external magnetic field and the drive current of the filament.Methods In this paper,we propose a new noise reducing GMI gradiometer with a dual-loop self-adapting structure.Noise reduction is realized by a direction-flexible differential probe,and the dual-loop structure optimizes and stabilizes the working point by automatically controlling the external magnetic field and drive current.This dual-loop structure is fully program controlled by a micro control unit(MCU),which not only simplifies the traditional constant parameter sensor circuit,saving the time required to adjust the circuit component parameters,but also improves the sensor performance and environmental adaptation.Results In the performance test,within 2 min of self-adaptation,our sensor showed a better sensitivity and signal-to-noise ratio(SNR)than those of the traditional designs and achieved a background noise of 12 pT/√Hz at 10 Hz and 7pT/√Hz at 200 Hz.Conclusion To the best of our knowledge,our sensor is the first to realize self-adaptation of both the external magnetic field and the drive current. | Changlin HAN Ming XU Jingsheng TANG Yadong LIU Zongtan ZHOU | 2022 | Virtual Reality & Intelligent Hardware2022，4，1： | 0 |
| 18 | New tetraphenylpyridinium-based luminogens with aggregation-induced emission characteristics显示文摘The research on aggregation-induced emission(AIE)has drawn increasing interests in the past decade.With the efforts scientists paid,a variety of AIE systems have been developed,among which the tetraphenylethelene and silole derivatives are the most studied.Development of new AIE systems could further enrich the AIE molecules and promote the development of AIE area.In this communication,we prepared a new AIE system based on1,2,4,6-tetraphenylpyridinium ions according to the restriction of intramolecular rotation mechanism.These molecules could be facilely synthesized via one-step and one-pot reaction.The ionic AIE-active molecules could find wide application in sensing and optoelectronic areas. | WANG ZongTan FANG Yuan SUN JingZhi QIN AnJun TANG Ben Zhong | 2013 | 中国科学:化学2013，43，9： | 0 |
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