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Development of a fan-stirred constant volume combustion chamber and turbulence measurement with PIV

Frontiers in Energy 2022, Volume 16, Issue 6, Pages 973-987 doi: 10.1007/s11708-021-0762-z

Abstract: Turbulence characteristics are estimated using particle image velocimetry (PIV) at different initial

Keywords： fan-stirred combustion chamber turbulence characteristics particle image velocimetry (PIV) methanol

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Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6, Pages 909-920 doi: 10.1007/s11705-021-2100-8

Abstract: was adjusted to simulate the mesoscale structure of the flue gas desulfurization process in a powder-particle

Keywords： adjusted mesoscale drag model particle image velocimetry water vaporization desulfurization reaction

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Image analyses for video-based remote structure vibration monitoring system

Yang YANG,Xiong (Bill) YU

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1, Pages 12-21 doi: 10.1007/s11709-016-0313-6

Abstract: The technical basis of video-based remote vibration measurement system is digital image analysis.Three different methods (i.e., frame difference method, particle image velocimetry, and optical FlowMethod) are utilized to analyze the image sequences to extract the feature of motion.With further refinement of system hardware and image processing software, it will be developed into a

Keywords： structure health monitoring velocity estimation frame difference PIV optical-flow method

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Ultrasound-guided prostate percutaneous intervention robot system and calibration by informative particle

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1, Pages 3-3 doi: 10.1007/s11465-021-0659-x

Abstract: The particle swarm optimization method based on informative value is proposed for kinematic parameter

Keywords： ultrasound image guidance prostate percutaneous intervention parallel robot kinematics identification particle swarm optimization informative value

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Image-Aided Analysis of Ballast Particle Movement Along a High-Speed Railway Article

Xuecheng Bian, Wenqing Cai, Zheng Luo, Chuang Zhao, Yunmin Chen

Engineering 2023, Volume 27, Issue 8, Pages 161-177 doi: 10.1016/j.eng.2022.08.006

Abstract: infrastructure of high-speed railways, ballast layers constituted by graded crushed stones feature noteworthy particleIn this study, an image-aided technique was developed in a full-scale model test using digital camerasThe obtained results indicated that the surface ballast particle movements were slight, mainly concentratedAdditionally, the development of ballast particle displacement statistically resembled its rotation.Furthermore, the development trends of ballast particle movements and track settlement under long-term

Keywords： High-speed railway Full-scale model test Image-aided technique Ballast particle movement Track vibration

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Experimental study on flow-field effect of circular gravity cage

Liu Chao,Guan Changtao,Cui Yong,Zhao Xia,Li Mengjie,Li Zhenzhen,Wang Tengteng

Strategic Study of CAE 2014, Volume 16, Issue 9, Pages 69-77

Abstract: be measured at specific measurement points at a velocity of 0.068m/s,0.105m/s,0.143m/s,0.182m/s by particleimage velocimetry (PIV) technique and acoustic Doppler velocimeter(ADV).The experimental data showedthat the measurement result of ADV was basically same with that of PIV.

Keywords： net cage ADV PIV velocity flow-field distribution

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Turbidity-adaptive underwater image enhancement method using image fusion

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-021-0669-8

Abstract: In this paper, we propose a turbidity-adaptive underwater image enhancement method.Based on the detection result, different image enhancement strategies are designed to deal with the problemThe proposed method is verified by an underwater image dataset captured in real underwater environmentThe result is evaluated by image metrics including structure similarity index measure, underwater colorimage quality evaluation metric, and speeded-up robust features.

Keywords： turbidity underwater image enhancement image fusion underwater robots visibility

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Gradient-based compressive image fusion

Yang CHEN,Zheng QIN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3, Pages 227-237 doi: 10.1631/FITEE.1400217

Abstract: We present a novel image fusion scheme based on gradient and scrambled block Hadamard ensemble (SBHE)In the fusion phase, the image gradient is calculated to reflect the abundance of its contour informationBy compositing the gradient of each image, gradient-based weights are obtained, with which compressiveFinally, inverse transformation is applied to the coefficients derived from fusion, and the fused imageIn addition, different image fusion application scenarios are applied to explore the scenario adaptability

Keywords： Compressive sensing (CS) Image fusion Gradient-based image fusion CS-based image fusion

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Edge detection of steel plates at high temperature using image measurement

Qiong Zhou, Qi An

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1, Pages 77-82 doi: 10.1007/s11465-009-0013-1

Abstract: An edge detection method for the measurement of steel plate’s thermal expansion is proposed in this paper, where the shrinkage of a steel plate is measured when temperature drops. First, images are picked up by an imaging system; a method of regional edge detection based on grayscales’ sudden change is then applied to detect the edges of the steel plate; finally, pixel coordinates of the edge position are transformed to physical coordinates through calibration parameters. The experiment shows that the real-time, high precision, and non-contact measurement of the steel plate’s edge position under high temperature can be realized using the imaging measurement method established in this paper.

Keywords： thermal expansion image measurement edge detection image calibration

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Catalyst particle shapes and pore structure engineering for hydrodesulfurization and hydrodenitrogenation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6, Pages 897-908 doi: 10.1007/s11705-021-2127-x

Abstract: Catalyst particle shapes and pore structure engineering are crucial for alleviating internal diffusionThe effects of catalyst particle shapes (sphere, cylinder, trilobe, and tetralobe) and pore structuresThe relationship between particle shape and effectiveness factor is first established, and the specificThe catalyst particle shapes primarily alter the average HDS/HDN reaction rate to adjust the HDS/HDNimproving HDS/HDN catalyst particle efficiency.

Keywords： hydrodesulfurization hydrodenitrogenation particle shape pore structure

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A novel light fluctuation spectrum method for in-line particle sizing

Shouxuan QIN, Xiaoshu CAI, Li MA

Frontiers in Energy 2012, Volume 6, Issue 1, Pages 89-97 doi: 10.1007/s11708-012-0176-z

Abstract: This paper discusses two problems in in-line particle sizing when using light fluctuation method.First, by retrieving the ratio of particle concentrations at different time, the intensity of incidentmulti-sub-size zone model is proposed, with which the relationship between the distribution of turbidity and the particle

Keywords： in-line measurement particle size distribution (PSD) incident light intensity particle concentration

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Independent cover meshless particle method for complex geotechnical engineering

Jianqiu WU, Yongchang CAI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4, Pages 515-526 doi: 10.1007/s11709-017-0428-4

Abstract: A new Independent Cover Meshless Particle (ICMP) method is proposed for the analysis of complex geotechnical

Keywords： meshless method particle method independent cover CTM geotechnical engineering

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Microdamage study of granite under thermomechanical coupling based on the particle flow code

Frontiers of Structural and Civil Engineering Pages 1413-1427 doi: 10.1007/s11709-023-0953-2

Abstract: an improved temperature-dependent linear parallel bond model is introduced under the framework of a particle

Keywords： thermomechanical coupling effect granite improved linear parallel bond model thermal property particle

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Deformable image registration with geometric changes

Yu LIU,Bo ZHU

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 10, Pages 829-837 doi: 10.1631/FITEE.1500045

Abstract: Geometric changes present a number of difficulties in deformable image registration.developed an innovative model which significantly reduces the side effects of geometric changes in imageWe show that the transformation estimated from our model is able to reconstruct the target image with

Keywords： Geometric changes Image registration Sparsity Traumatic brain injury (TBI)