Article
Geochemistry & Geophysics
Michael Commer
Summary: Algorithmic and computational advances have enabled geophysical survey and earth model design to be aided by systematic trial inverse modeling runs with synthetic data. Automated image appraisal may involve common statistical tests and require secondary categorizers for solution non-uniqueness.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Optics
Yunfei Chen, Shuhan Zhu, Kaimin Yu, Minfeng Wu, Lei Feng, Peibin Zhu, Wen Chen
Summary: In this paper, the quantitative relationship between the signal broadening of a phase-sensitive optical time-domain reflectometer (f-OTDR) and the non-local mean (NLM) parameters is analyzed. It is found that the signal broadening is mainly due to the similarity window size of NLM, and the signal amplitude reduction is caused by the Gaussian smoothing parameter. The denoising results for the mimic periodic and f-OTDR vibration signals show that NLM can effectively improve the signal-to-noise ratio while reducing the spatial resolution of DFOS.
Article
Environmental Sciences
Kinga Karwowska, Damian Wierzbicki
Summary: This article introduces a new method for improving the resolution of satellite images using window functions and deep neural networks. Experimental results show that a Triangular window achieves the best reconstruction effect with a coverage rate of 10%, while the Hann-Poisson window performs best when there is more image overlap.
Article
Geochemistry & Geophysics
Lu Cheng, Wenxiao Qiao, Xiaohua Che, Teng Zhao
Summary: In this study, a data processing method for borehole azimuthal acoustic reflection imaging is proposed to improve accuracy of azimuth measurement and imaging quality of near-borehole geological structures. By selecting adjacent receiving sensors to form phased array receiver subarrays, elevation and azimuth angles can be obtained to enhance event signals and improve migration image quality. The method was confirmed to significantly improve azimuth interpretation accuracy and imaging quality through comparison with field data processing results.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Quantum Science & Technology
Suzhen Yuan, Xianrong Qing, Bo Hang, Hong Qu
Summary: A quantum median filtering method for color images is proposed in this paper, with the corresponding quantum circuit simulated on the IBM Q platform. The technique improves the quantum color image storage module and uses nine quantum color images to represent the core image and its neighborhoods, reducing time complexity and auxiliary qubits.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Agriculture, Multidisciplinary
Ketsarin Chawgien, Supaporn Kiattisin
Summary: This paper presents a fusion non-destructive method for classifying watermelon sweetness based on acoustic signal and image processing techniques, using machine learning to develop sweetness classification models. The proposed method shows reliable classification performance, with Gradient boosted trees achieving the highest classification accuracy of 92%.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2021)
Article
Computer Science, Artificial Intelligence
Hao Zhang, Yan Piao, Nan Qi
Summary: The authors propose a novel Transformer-based tracker that fuses spatial and temporal features, achieving comprehensive feature extraction and improved information interaction. The tracker achieves state-of-the-art results on multiple benchmark datasets.
IET COMPUTER VISION
(2023)
Article
Astronomy & Astrophysics
F. Louvet, P. Hennebelle, A. Men'shchikov, P. Didelon, E. Ntormousi, F. Motte
Summary: This study systematically investigates the effects of angular resolution on the derived sizes and masses of sources extracted from observed images. It suggests a linear dependence between the measured sizes and masses of sources and the angular resolution, with implications for the understanding of star formation processes.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Optics
Chun Jiang, Tao Chen, Changzheng Lu, Zhiyong Wu, Changhua Liu, Meng Shao, Jingtai Cao
Summary: In this paper, an improved method for spatial image non-uniformity correction based on partition processing is proposed. An evaluation metric is introduced to evaluate the partition size and iteratively calculate the mean and variance in each partitioned region to extract the background. After applying bilinear interpolation to the background extracted from each region, the inhomogeneous background is obtained and removed from the original image. Experiments on simulated and real images show that the proposed method can effectively remove the inhomogeneous background of spatial images and meet the requirements of real-time processing of high-resolution images under long exposure conditions.
Article
Polymer Science
Armin Gholizadeh, Amir Babaei, Majid Ziaratban
Summary: Nanographene was synthesized and TPU/NG nanocomposites were prepared using a cost-effective method. The dispersion quality of NG significantly affected the rheological and mechanical properties of the nanocomposites, showing both reinforcement and lubricant effects.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Geochemistry & Geophysics
Lisa Winhausen, Alexandra Amann-Hildenbrand, Reinhard Fink, Mohammadreza Jalali, Kavan Khaledi, Pooya Hamdi, Janos L. Urai, Joyce Schmatz, Florian Amann
Summary: This paper presents a comparative laboratory study of different methods to determine the water permeability of saturated Opalinus Clay, and found the results obtained by different methods differ less than 15 percent. The pore pressure oscillation technique appears to be the most efficient in terms of experimental handling and data density, providing continuous data on permeability and storativity over a user-defined period of time.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Physics, Multidisciplinary
Sihan Jiao, Yuxin Lin, Xiangyu Shui, Jingwen Wu, Zhiyuan Ren, Di Li
Summary: A new algorithm called J-comb is introduced to address the issue of missing flux in ground-based, high-resolution bolometric (sub)millimeter continuum mapping observations. By combining high and low-resolution images linearly, J-comb ensures near-Gaussian shapes in the beam response functions, making it easier to convolve observations at multiple wavelengths. The algorithm outperforms two widely-used image combination algorithms, CASA-feather and MIRIAD-immerge, in producing dust temperature and column density maps with finer details.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2022)
Article
Chemistry, Analytical
Xiaoteng Zhou, Changli Yu, Xin Yuan, Citong Luo
Summary: Image matching between sonar and optical camera has always been challenging due to their independent imaging mechanisms causing significant differences in local features under different modalities. This study proposes a new solution using image attribute transfer and advanced local feature descriptor to address the acousto-optic image matching problem, with experimental results demonstrating the effectiveness of the method.
Article
Engineering, Civil
Yi Yu, Lutz Weihermueller, Anja Klotzsche, Lena Laerm, Harry Vereecken, Johan Alexander Huisman
Summary: This study compared the performance of sequential and coupled inversion workflows in obtaining soil hydraulic properties from horizontal borehole GPR data. The results showed that sequential inversion did not provide accurate estimates, while the coupled inversion approach provided accurate estimates of hydraulic properties in both synthetic modelling studies and actual field data. The study concluded that coupled inversion should be preferred over sequential inversion for horizontal borehole GPR data when strong SWC gradients occur during infiltration events.
JOURNAL OF HYDROLOGY
(2021)
Article
Mathematics, Interdisciplinary Applications
Bogdan Popa, Dan Selisteanu, Alexandra Elisabeta Lorincz
Summary: This article introduces a specific model for fractal generation and analyzes its efficiency and the generated graphic results from a programming perspective. The paper presents the software structure and implementation of the model and provides comparisons and demonstrations related to calculation times. The use of parallel programming is highlighted to emphasize methods of speeding up computing times.
FRACTAL AND FRACTIONAL
(2022)
Article
Geochemistry & Geophysics
Yi Zhang, Hyuck Park, Osamu Nishizawa, Tamotsu Kiyama, Yu Liu, Kwangseok Chae, Ziqiu Xue
GEOPHYSICAL PROSPECTING
(2017)
Article
Geochemistry & Geophysics
Tetsuya Kogure, Yi Zhang, Osamu Nishizawa, Ziqiu Xue
GEOPHYSICAL JOURNAL INTERNATIONAL
(2017)
Article
Green & Sustainable Science & Technology
Yi Zhang, Tetsuya Kogure, Osamu Nishizawa, Ziqiu Xue
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2017)
Article
Environmental Sciences
Yi Zhang, Osamu Nishizawa, Hyuck Park, Tamotsu Kiyama, Xinglin Lei, Ziqiu Xue
WATER RESOURCES RESEARCH
(2017)
Article
Geochemistry & Geophysics
Tetsuya Kogure, Yi Zhang, Osamu Nishizawa, Ziqiu Xue
GEOPHYSICAL JOURNAL INTERNATIONAL
(2018)
Article
Environmental Sciences
Yi Zhang, Ziqiu Xue, Hyuck Park, Ji-Quan Shi, Tamotsu Kiyama, Xinglin Lei, Yankun Sun, Yunfeng Liang
WATER RESOURCES RESEARCH
(2019)
Article
Environmental Sciences
Yi Zhang, Ziqiu Xue
WATER RESOURCES RESEARCH
(2019)
Article
Green & Sustainable Science & Technology
Anindityo Patmonoaji, Yi Zhang, Ziqiu Xue, Hyuck Park, Tetsuya Suekane
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2019)
Article
Environmental Sciences
Yankun Sun, Ziqiu Xue, Tsutomu Hashimoto, Xinglin Lei, Yi Zhang
WATER RESOURCES RESEARCH
(2020)
Article
Engineering, Environmental
Jiangtao Pang, Yunfeng Liang, Yoshihiro Masuda, Toshifumi Matsuoka, Yi Zhang, Ziqiu Xue
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Energy & Fuels
Hongyu Zhai, Ziqiu Xue, Hyuck Park, Yoshihiro Aizawa, Yoshitaka Baba, Yi Zhang
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2020)
Article
Energy & Fuels
Yankun Sun, Ziqiu Xue, Tsutomu Hashimoto, Yi Zhang
Summary: The study successfully monitored underground motions induced by water injection tests between two adjacent wells using DFOS technology, revealing that injection volume and pressure significantly influenced the strain magnitude and coverage.
Article
Geochemistry & Geophysics
Yi Zhang, Xinglin Lei, Tsutomu Hashimoto, Ziqiu Xue
Summary: This study demonstrates that high-resolution fiber optic distributed strain sensing (DSS) tools can successfully measure subtle elastic rock deformations during aquifer pumping tests, providing hydraulic parameter information. The results show that the simultaneous estimation of permeability and compressibility is possible using DSS data at low noise levels, but estimation difficulties arise when the data contain large noise.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Yi Zhang, Xinglin Lei, Tsutomu Hashimoto, Ziqiu Xue
Proceedings Paper
Green & Sustainable Science & Technology
Yi Zhang, Osamu Nishizawa, Hyuck Park, Tamotsu Kiyama, Ziqiu Xue
13TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-13
(2017)