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Biogeotechnics Won the 2025“New Comer Award”“Great Progress Award” 认领 引用
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《Biogeotechnics》 2026年第1期I0002-I0002,共1页
We would like to share that Biogeotechnics is the winner of the 2025"New Comer Award""Great Progress Award"as announced by KeAi Publishing on 20 Oct 2025.
关键词 great progress award biogeotechnics keai publishing new comer award
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ECSRE Analysis on Late Comer Strategy for Folk Custom Eco-tourism of Southeast Chongqing in the New Normal State 认领 引用
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作者 Guanghua LUO Qiang LI 《Asian Agricultural Research》 2016年第8期41-46,52,共6页
The development of late comers in the new normal state is a practical and urgent issue to be tackled by underdeveloped areas of China in current situation.The development strategy of late comers is economic developmen... The development of late comers in the new normal state is a practical and urgent issue to be tackled by underdeveloped areas of China in current situation.The development strategy of late comers is economic development strategy different from economically developed areas.Five element strategic analysis model(ECSRE) stresses intrinsic features of things,which is favorable for making clear weakness of late comers and suitable for southeast Chongqing.With the aid of the ECSRE,on the basis of analyzing resources and external conditions,this paper made an in-depth analysis on late comer strategy for southeast Chongqing from the perspective of industry pattern attribute,development stages,individual characters and thinking pattern of decision-makers.It stresses regional cooperation,unified restriction,dislocation characteristics,institutional simulation and innovation and improving policy system,to stimulate strengths of late comers,so as to promote long-term rapid and sustainable development of folk custom eco-tourism in southeast Chongqing. 展开更多
关键词 Southeast Chongqing Folk custom eco-tourism Late comer strategies
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一种新颖的彩色水印图像几何失真校正算法 认领 引用 被引量：2
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作者 杨晓元 季称利 +1 位作者 王育民 张崇 《计算机工程》 EI CAS 北大核心 2006年第6期186-188,共3页
几何攻击是制约水印技术实用性的重要因素,当图像经过旋转、缩放和DA转换等几何变换后,绝大多数水印算法的检测器将失效。该文提出一种新的基于计算机视觉理论的图像空域特征重同步算法,首次采用图像的corner中心角和corner中心距离对... 几何攻击是制约水印技术实用性的重要因素,当图像经过旋转、缩放和DA转换等几何变换后,绝大多数水印算法的检测器将失效。该文提出一种新的基于计算机视觉理论的图像空域特征重同步算法,首次采用图像的corner中心角和corner中心距离对水印图像几何失真进行失真校正。实验证明,算法性能良好、校正精度高、可以有效地校正大强度几何失真。 展开更多
关键词 数字图像水印 几何失真 comer中心角 comer中心距离
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李斯特发展经济学:后进国家视角与自主赶超体系 认领 引用
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作者 徐雅卿 梅俊杰 张嘉璈 《上海经济研究》 CSSCI 北大核心 2025年第10期118-128,共11页
发展经济学是战后兴起的经济学分支,但它提出的关于后进国家经济发展的命题和主张其实早有渊源。李斯特在19世纪上半叶站在后进国立场上提出自主赶超体系,已经构建了一种名副其实的发展经济学。就工业化的必要性和可取性、政府干预和国... 发展经济学是战后兴起的经济学分支,但它提出的关于后进国家经济发展的命题和主张其实早有渊源。李斯特在19世纪上半叶站在后进国立场上提出自主赶超体系,已经构建了一种名副其实的发展经济学。就工业化的必要性和可取性、政府干预和国家作用、依附风险与产业扶持、非经济因素的重要性、交通建设的优先性、工业化中农业的地位等战后发展热点议题,李斯特留下了一系列堪称经典的先驱性论断。由于自由主义经济学长期占据主导地位,学界惯于低估或批评李斯特学说,使得发展经济学未能站在先驱者的肩膀上获得理论滋养并取得更大成就。在全球化有所逆转的当前背景下,李斯特发展经济学对发展中国家的赶超实践仍有指导意义,其后进国家视角与自主赶超体系对当今发展经济学尤有补益作用。 展开更多
关键词 李斯特 发展经济学 先驱思想 后进国家视角 自主赶超体系
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Experimental Study of Corner Stall in a Linear Compressor Cascade 认领 引用 被引量：15
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作者 MA Wei OTTAVY Xavier +2 位作者 LU Lipeng LEBOEUF Francis GAO Feng 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2011年第3期235-242,共8页
In order to gain a better knowledge of the mechanisms and to calibrate computational fluid dynamics （CFD） tools including both Reynolds-averaged Navier-Stokes （RANS） and large eddy simulation （LES）, a detailed a... In order to gain a better knowledge of the mechanisms and to calibrate computational fluid dynamics （CFD） tools including both Reynolds-averaged Navier-Stokes （RANS） and large eddy simulation （LES）, a detailed and accurate experimental study of comer stall in a linear compressor cascade has been carried out. Data are taken at a Reynolds number of 382 000 based on blade chord and inlet velocity. At first, inlet flow boundary layer is surveyed using hot-wire anemometry. Then in order to investigate the effects of incidence, measurements are acquired at five incidences, including static pressures on both blade and endwall sur- faces measured by pressure taps and the total pressure losses of outlet flow measured by a five-hole pressure probe. The maxi- mum losses as well as the extent of losses of the comer stall are presented as a function of the investigated incidences. 展开更多
关键词 comer separation compressor cascades incidence hot-wire anemometry computational fluid dynamics
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Assessment of Two Turbulence Models and Some Compressibility Corrections for Hypersonic Compression Corners by High-order Difference Schemes 认领 引用 被引量：15
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作者 TU Guohua DENG Xiaogang MAO Meiliang 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2012年第1期25-32,共8页
The Spalart-Allmaras （S-A） turbulence model, the shear-stress transport （SST） turbulence model and their compressibility corrections are revaluated for hypersonic compression comer flows by using high-order differ... The Spalart-Allmaras （S-A） turbulence model, the shear-stress transport （SST） turbulence model and their compressibility corrections are revaluated for hypersonic compression comer flows by using high-order difference schemes. The compressibility effect of density gradient, pressure dilatation and turbulent Mach number is accounted. In order to reduce confusions between model uncertainties and discretization errors, the formally fifth-order explicit weighted compact nonlinear scheme （WCNS-E-5） is adopted for convection terms, and a fourth-order staggered central difference scheme is applied for viscous terms. The 15° and 34° compression comers at Mach number 9.22 are investigated. Numerical results show that the original SST model is superior to the original S-A model in the resolution of separated regions and predictions of wall pressures and wall heat-flux rates. The capability of the S-A model can be largely improved by blending Catris＇ and Shur＇s compressibility corrections. Among the three corrections of the SST model listed in the present paper, Catris＇ modification brings the best results. However, the dissipation and pressure dilatation corrections result in much larger separated regions than that of the experiment, and are much worse than the original SST model as well as the other two corrections. The correction of turbulent Mach number makes the separated region slightly smaller than that of the original SST model. Some results of low-order schemes are also presented. When compared to the results of the high-order schemes, the separated regions are smaller, and the peak wall pressures and peak heat-flux rates are lower in the region of the reattachment points. 展开更多
关键词 aerodynamics high-order weighted compact nonlinear scheme hypersonic compression comers turbulence models compressibility corrections shock/boundary layer interactions shock waves
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结合空域不变量的变换域零水印二次检测方案 认领 引用 被引量：13
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作者 季称利 杨晓元 +2 位作者 张崇 韩益亮 魏立线 《计算机工程》 EI CAS 北大核心 2004年第14期105-107,115,共3页
利用变换域水印技术对诸如压缩、滤波等信号处理具有较好鲁棒性的优点,结合空域中对几何变换具有抵抗力的常量来构造与检测零水印。实验证明,方案对剪切、数模转换处理、滤波、噪声、JPEG压缩、旋转等图像处理具有较强的鲁棒性。
关键词 数字图像 零水印 二次检测 重同步 comer中心角
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Time series ground subsidence inversion in mining area based on CRInSAR and PSInSAR integration 认领 引用 被引量：7
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作者 邢学敏 朱建军 +1 位作者 王永哲 杨亚夫 《Journal of Central South University》 SCIE EI CAS 2013年第9期2498-2509,共12页
The subsidence of the mining area was monitored by analyzing the phase of permanent scatters （PS） which maintained high coherence in magnitude of SAR images.A hew method of spatial unwrapping was presented which use... The subsidence of the mining area was monitored by analyzing the phase of permanent scatters （PS） which maintained high coherence in magnitude of SAR images.A hew method of spatial unwrapping was presented which used the subsidence rates calculated on comer reflector （CR） points as constraints for PS network to perform the spatial unwrapping using the parametric adjustment method.The algorithm achieved the integration of CR data and PSInSAR algorithm.The colliery dense distributed area around Baisha reservoir was chosen as the study area in the experiment.The time series of subsidence from February in 2007 to February in 2010 is successfully inversed by using the periodic function to simulate the linear and nonlinear components of the deformation.The simulation results show that the accuracy can be ± 2.1 mm with the leveling data being used as the external validation data. 展开更多
关键词 permanent scatters comer reflector （CR） constraint adjustment mining subsidence nonlinear deformation
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Die structure optimization of equal channel angular extrusion for AZ31 magnesium alloy based on finite element method 认领 引用 被引量：14
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作者 胡红军 张丁非 潘复生 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS 2010年第2期259-266,共8页
Three-dimensional（3D） geometric models with different comer angles （90° and 120°） and with or without inner round fillets in the bottom die were designed. Some important process parameters were regarded ... Three-dimensional（3D） geometric models with different comer angles （90° and 120°） and with or without inner round fillets in the bottom die were designed. Some important process parameters were regarded as the calculation conditions used in DEFORMTM-3D software, such as stress--strain data of compression test for AZ31 magnesium, temperatures of die and billet, and friction coefficient. Influence of friction coefficient on deformation process was discussed. The results show that reasonable lubrication condition is important to plastic deformation. The change characteristics for distributions of effective stress and strain during an equal channel angular extrusion （ECAE） process with inner angle of 90° and without fillets at outer comer were described. Inhomogeneity index （C） was defined and deformation heterogeneity of ECAE was analyzed from the simulation and experiment results. The deformation homogeneity caused by fillets at outer comer increased compared with the die without fillets. The cumulated maximum strains decrease with increasing the fillets of outer comer in ECAE die and the inner comer angle. The analysis results show that better structures of ECAE die including appropriate outer comer fillet and the inner comer angle of 90° for the die can improve the strain and ensure plastic deformation homogenization to a certain extent. The required extrusion force drops with increasing the fillet made at outer comer in ECAE die. It is demonstrated that the prediction results are in good agreement with experiments and the theoretical calculation and the research conclusions in literatures. 展开更多
关键词 AZ31 magnesium alloy equal channel angular extrusion finite element method outer comer angle deformation inhomogeneity
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Numerical Computation of Stress Intensity Factors for Bolt-hole Corner Crack in Mechanical Joints 认领 引用 被引量：6
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作者 王立清 盖秉政 《Chinese Journal of Aeronautics》 SCIE EI CAS 2008年第5期411-416,共6页
The three-dimensional finite element method is used to solve the problem of the quarter-elliptical comer crack of the bolt-hole in mechanical joints being subjected to remote tension. The square-root stress singularit... The three-dimensional finite element method is used to solve the problem of the quarter-elliptical comer crack of the bolt-hole in mechanical joints being subjected to remote tension. The square-root stress singularity around the corner crack front is simulated using the collapsed 20-node quarter point singular elements. The contact interaction between the bolt and the hole boundary is considered in the finite element analysis. The stress intensity factors （SIFs） along the crack front are evaluated by using the displacement correlation technique. The effects of the amount of clearance between the hole and the bolt on the SIFs are investigated. The numerical results indicate that the SIF for mode I decrease with the decreases in clearance, and in the cases of clearance being present, the corner crack is in a mix-mode, even if mode I loading is dominant. 展开更多
关键词 bolt-hole comer crack contact stress intensity factor mechanical joint clearance finite element method
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Study on Internal Supersonic Flows with Pseudo-shock Wave Using Liquid Crystal Flow Visualization Method 认领 引用 被引量：2
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作者 王东屏 兆文忠 +1 位作者 杉山弘 东条启 《Chinese Journal of Aeronautics》 EI CAS 2005年第2期102-107,共6页
The flow visualization technique using shear-sensitive liquid crystal is applied to the investigation of a Mach 2 internal supersonic flow with pseudo-shock wave （PSW） in a pressure-vacuum supersonic wind tunnel. It... The flow visualization technique using shear-sensitive liquid crystal is applied to the investigation of a Mach 2 internal supersonic flow with pseudo-shock wave （PSW） in a pressure-vacuum supersonic wind tunnel. It provides qualitative information mainly concerning the overall flow structure, such as the turbulent boundary layer separation, reattachment locations and the dimensionalities of the flow. Besides, it can also give understanding of the surface streamlines, vortices in separation region and the corner effect of duct flow. Two kinds of crystals with different viscosities are used in experiments to analyze the viscosity effect. Results are compared with schlieren picture, confirming the effectiveness of liquid crystal in flow-visualization. 展开更多
关键词 surface flow visualization turbulent boundary layer separation pseudo-shock-wave shock waveurbulent boundary layer interaction shear-sensitive liquid crystal comer effect
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High-speed corner detection based on fuzzy ID3 decision tree 认领 引用 被引量：1
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作者 段汝娇 赵伟 +1 位作者 黄松岭 郝宽胜 《Journal of Central South University》 SCIE EI CAS 2012年第9期2528-2533,共6页
A high-speed comer detection algorithm based on fuzzy ID3 decision tree was proposed. In the algorithm, the Bresenham circle with 3-pixel radius was used as the test mask, overlapping the candidate comers with the nuc... A high-speed comer detection algorithm based on fuzzy ID3 decision tree was proposed. In the algorithm, the Bresenham circle with 3-pixel radius was used as the test mask, overlapping the candidate comers with the nucleus. Connected pixels on the circle were applied to compare the intensity value with the nucleus, with the membership function used to give the fuzzy result. The pixel with maximum information gain was chosen as the parent node to build a binary decision tree. Thus, the comer detector was derived. The pictures taken in Fengtai Railway Station in Beijing were used to test the method. The experimental results show that when the number of pixels on the test mask is chosen to be 9, best result can be obtained. The comer detector significantly outperforms existing detector in computational efficiency without sacrificing the quality and the method also provides high performance against Poisson noise and Gaussian blur. 展开更多
关键词 comer detector fuzzy ID3 algorithm decision tree computation efficiency real-time
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New templates of CNN for extracting corners of objects in gray-scale images 认领 引用 被引量：4
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作者 Lequan Min, Ming Lei, and Xisong DongApplied Science School, University of Science and Technology Beijing, Beijing 100083, China 《Journal of University of Science and Technology Beijing》 2003年第3期73-75,共3页
A new cellular neural network (CNN) with nonlinear templates is presented forextracting convex corners of objects in gray-scale images. Application examples showed that the newCNN can even detect convex corner charact... A new cellular neural network (CNN) with nonlinear templates is presented forextracting convex corners of objects in gray-scale images. Application examples showed that the newCNN can even detect convex corner characteristics of objects in images with Gaussian noise. 展开更多
关键词 cellular neural network extract convex comers gray-scale images
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A light-through-side cell and co-used furnace designed for micro-Raman spectra study on volatile melts 认领 引用
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作者 Xian Wei Hu Huan Li +4 位作者 Bing Liang Gao Jing Jing Liu Zhong Ning Shi Jiang Yu Yu Zhao Wen Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2012年第11期1291-1294,共4页
A new type of sample cell specially designed for micro-Raman spectra study on volatile melts is described. The cell is made of quartz. The lower section of the cell is circular ring-shaped and the one-end-closed hole ... A new type of sample cell specially designed for micro-Raman spectra study on volatile melts is described. The cell is made of quartz. The lower section of the cell is circular ring-shaped and the one-end-closed hole in the cell is used for locating the heating body. The tube attached to the cell lid for placing the thermal couple is inserted into the sample, which ensures that the temperature measurement accuracy is good. The cell can be sealed for reducing the effect of the composition change caused by the in_homogeneous volatilization. During the Raman spectra scanning, the laser beam is transmitted into the cell through the side but not the top. Meanwhile, a furnace has been designed to match the cell. The heating body is closely coupled with the sample cell, and there is a hole on the side wall of the furnace for the entrance of the microlens. The assembly has performed well in the tested Raman spectrum measurement of molten NaNO3 at 602 ℃. 展开更多
关键词 Light-through-side cell Raman spectroscopy Volatile melts Comer microlens Cell-around-heating body furnace
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Corner strength enhancement of high strength cold-formed steel at normal room and elevated temperatures 认领 引用
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作者 Ju CHEN Wei-liang JIN 《Journal of Zhejiang University-SCIENCE A》 SCIE EI CAS 2008年第9期1251-1257,共7页
In this study, the suitability of current design methods for the 0.2% proof yield strength of the comer regions for high strength cold-formed steel at normal room temperature was investigated. The current standard pre... In this study, the suitability of current design methods for the 0.2% proof yield strength of the comer regions for high strength cold-formed steel at normal room temperature was investigated. The current standard predictions are generally accurate for outer comer specimen but conservative for inner comer specimen. Based on the experimental results, an analytical model to predict the comer strength of high strength cold-formed steel at normal room temperature was also proposed. The comparison indicated that the proposed model predicted well the comer strength of high strength cold-formed steel not only at normal room temperature but also at elevated temperatures. It is shown that the predictions obtained from the proposed model agree well with the test results. Generally the comer strength enhancement of high strength cold-formed steel decreases when the temperature increases. 展开更多
关键词 Cold-formed steel Comer Elevated temperatures High strength steel Yield strength
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The Stress Combination Method for the Fatigue Assessment of the Hatch Corner of a Bulk Carrier Based on Equivalent Waves 认领 引用
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作者 Guoqing Feng Hao Sun +1 位作者 Dongping Liu Hui Li 《Journal of Marine Science and Application》 2012年第1期68-73,共6页
The stress combination method for the fatigue assessment of the hatch comer of a bulk carrier was investigated based on equivalent waves.The principles of the equivalent waves of ship structures were given,including t... The stress combination method for the fatigue assessment of the hatch comer of a bulk carrier was investigated based on equivalent waves.The principles of the equivalent waves of ship structures were given,including the determination of the dominant load parameter,heading,frequency,and amplitude of the equivalent regular waves.The dominant load parameters of the hatch comer of a bulk carrier were identified by the structural stress response analysis,and then a series of equivalent regular waves were defined based on these parameters.A combination method of the structural stress ranges under the different equivalent waves was developed for the fatigue analysis.The combination factors were obtained by least square regression analysis with the stress ranges derived from spectral fatigue analysis as the target value.The proposed method was applied to the hatch comer of another bulk carrier as an example.This shows that the results from the equivalent wave approach agree well with those from the spectral fatigue analysis.The workload is reduced substantially.This method can be referenced in the fatigue assessment of the hatch comer of a bulk carrier. 展开更多
关键词 stress combination method equivalent wave bulk carrier hatch comer fatigue strengthassessment ship structures
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Phase equilibria in Mg-rich corner of Mg-Ca-RE(RE=Gd,Nd) systems at 400℃ 认领 引用 被引量：6
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作者 费厚军 徐广龙 +3 位作者 刘立斌 薄宏 曾丽君 陈翠萍 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第4期881-888,共8页
The phase equilibria in Mg-rich corner of Mg-Ca-Gd and Mg-Ca-Nd ternary systems at 400℃ were determined through the equilibrated alloy method by using XRD, SEM, EPMA and DSC. Partial isothermal sections in Mg-rich co... The phase equilibria in Mg-rich corner of Mg-Ca-Gd and Mg-Ca-Nd ternary systems at 400℃ were determined through the equilibrated alloy method by using XRD, SEM, EPMA and DSC. Partial isothermal sections in Mg-rich corner of Mg-Ca-Gd and Mg-Ca-Nd ternary systems at 400 ℃ were constructed from 13 alloys. A three-phase region of a-Mg, Mg41RE5 and Mg2Ca was determined in both ternary systems. It is formed by a similar ternary eutectic reaction L→a-Mg＋Mg2Ca＋Mg41RE5 at 499.6 ℃ and 505.6 ℃, respectively. It is found that the maximum solubility of Ca in Mg5Gd is 3.68% （molar fraction） and 3% of Gd can be dissolved in Mg2Ca in the Mg-Ca-Gd system at 400 ℃. While in the Mg-Ca-Nd system, the maximum solubility of Ca in Mg41Nd5 is 3.57% and 1.24% of Nd can be dissolved in Mg2Ca at 400 ℃. Other three-phase equilibria existing in Mg-rich corner of Mg-Ca-Gd system are a-Mg＋MgsGd＋T and MgsGd＋Mg2Ca＋T and the three-phase equilibrium in Mg-rich corner of Mg-Ca-Nd system is Mg3Nd＋Mg2Ca＋ Mg41Nd5. 展开更多
关键词 Mg-Ca-Gd system Mg-Ca-Nd system Mg-rich comer three-phase equilibrium solubility
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Development of a 170-mm hollow corner cube retroreflector for the future lunar laser ranging 认领 引用 被引量：4
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作者 Yun He Qi Liu +4 位作者 Jing-Jing He Ming Li Hui-Zong Duan Hsien-Chi Yeh Jun Luo 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第10期266-270,共5页
Over the past 50 years,lunar laser ranging has made great contributions to the understanding of the Earth–Moon system and the tests of general relativity.However,because of the lunar libration,the Apollo and Lunokhod... Over the past 50 years,lunar laser ranging has made great contributions to the understanding of the Earth–Moon system and the tests of general relativity.However,because of the lunar libration,the Apollo and Lunokhod corner-cube retroreflector(CCR)arrays placed on the Moon currently limit the ranging precision to a few centimeters for a single photon received.Therefore,it is necessary to deploy a new retroreflector with a single and large aperture to improve the ranging precision by at least one order of magnitude.Here we present a hollow retroreflector with a 170-mm aperture fabricated using hydroxide-catalysis bonding technology.The precisions of the two dihedral angles are achieved by the mirror processing with a sub-arc-second precision perpendicularity,and the remaining one is adjusted utilizing an auxiliary optical configuration including two autocollimators.The achieved precisions of the three dihedral angles are 0.10 arcsecond,0.30 arc-second,and 0.24 arc-second,indicating the 68.5%return signal intensity of ideal Apollo 11/14 based on the far field diffraction pattern simulation.We anticipate that this hollow CCR can be applied in the new generation of lunar laser ranging. 展开更多
关键词 lunar laser ranging comer cube retroreflector diffraction alignment
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Stress drop assessment of the August 8,2017,Jiuzhaigou earthquake sequence and its tectonic implications 认领 引用 被引量：3
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作者 Xi He Lian-Feng Zhao +3 位作者 Xiao-Bi Xie Lin Shen Wei-Min Wang Zhen-Xing Yao 《Earthquake Science》 2020年第4期161-176,共16页
By using a broadband Lg attenuation model developed for the Tibetan Plateau,we isolate source terms by removing attenuation and site effects from the observed Lg-wave displacement spectra of the M 7.0 earthquake that ... By using a broadband Lg attenuation model developed for the Tibetan Plateau,we isolate source terms by removing attenuation and site effects from the observed Lg-wave displacement spectra of the M 7.0 earthquake that occurred on August 8,2017,in Jiuzhaigou,China,and its aftershock sequence.Thus,the source parameters,including the scalar seismic moment,comer frequency and stress drop,of these events can be further estimated.The estimated stress drops vary from 47.1 kPa to 7149.6 kPa,with a median value of 59.4 kPa and most values falling between 50 kPa and 75 kPa.The estimated stress drops show significant spatial variations.Lower stress drops were mainly found close to the mainshock and on the seismogenic fault plane with large coseismic slip.In contrast,the highest stress drop was 7.1 MPa for the mainshock,and relatively large stress drops were also found for aftershocks away from the major seismogenic fault and at depths deeper than the zone with large coseismic slip.By using a statistical method,we found self-similarity among some of the aftershocks with a nearly constant stress drop.In contrast,the stress drop increased with the seismic moment for other aftershocks.The amount of stress released during earthquakes is a fundamental characteristic of the earthquake rupture process.As such,the stress drop represents a key parameter for improving our understanding of earthquake source physics. 展开更多
关键词 scalar seismic moment comer frequency stress drop Lg attenuation Jiuzhaigou earthquake
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一种基于角点特征的数字稳像算法研究 认领 引用 被引量：1
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作者 邢慧 颜景龙 张树江 《应用基础与工程科学学报》 EI 2006年第4期566-571,共6页
针对复杂背景情况,提出一种基于角点特征的车载视频图像序列数字稳像算法.采用改进的Harris算子提取特征点,根据三级匹配策略实现对应点的匹配;建立参考图像与当前图像的映射关系,采用最小二乘解得到图像帧间的全局运动参数;最后利用Kal... 针对复杂背景情况,提出一种基于角点特征的车载视频图像序列数字稳像算法.采用改进的Harris算子提取特征点,根据三级匹配策略实现对应点的匹配;建立参考图像与当前图像的映射关系,采用最小二乘解得到图像帧间的全局运动参数;最后利用Kalman滤波平滑运动参数,实现帧间的实时运动补偿,达到稳像目的.实验结果表明该方法去除了高频抖动,较好的保留了摄像机的主动运动,稳像后的视频具有良好的视觉效果. 展开更多
关键词 Harris comer 全局运动估计 Kalman滤波 数字稳像
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