Article
Environmental Sciences
Pietro Fiorentin, Andrea Bertolo, Stefano Cavazzani, Sergio Ortolani
Summary: The use of RGB cameras in photometric applications has grown in various fields such as industrial applications, light engineering, and night sky quality analysis. This study compares the performance of a Sky Quality Meter (SQM) and an RGB camera. The results show that these two instruments have significantly different levels of spectral responsivity, and their outputs need to be corrected based on the spectral distribution of the sky light.
Article
Optics
Yuhyun Ji, Yunsang Kwak, Sang Mok Park, Young L. Kim
Summary: This study discusses the mapping of spectral stimuli to RGB color values using spectral response functions of a three-color image sensor, highlighting the device-dependent differences between models. It introduces a compressive sensing framework in the frequency domain for accurately predicting RGB spectral response functions with several primary colors.
Article
Mathematics
Luis-Rogelio Roman-Rivera, Israel Sotelo-Rodriguez, Jesus Carlos Pedraza-Ortega, Marco Antonio Aceves-Fernandez, Juan Manuel Ramos-Arreguin, Efren Gorrostieta-Hurtado
Summary: RGB-D cameras are commonly used in 3D reconstruction and computer vision, but calibration errors can affect alignment. In this work, we propose a novel strategy that simplifies calibration by using a known-sized ordinary object as a calibration reference, requiring fewer images and achieving comparable results even in non-ideal conditions.
Article
Chemistry, Analytical
Hyeon-Woo Park, Ji-Won Choi, Ji-Young Choi, Kyung-Kwang Joo, Na-Ri Kim
Summary: In this study, a non-linear hue-wavelength (H-W) curve in the range of 400 to 650 nm was investigated using a digital camera with CMOS image sensors. The H-W curve was reconstructed based on RGB-based imaging analysis. Factors such as exposure time and ISO were examined for their effects on the digital image. Laser cross-check of the H-W response was also performed. This method is expected to be a useful auxiliary method for obtaining fluorescence emission wavelength information in the future.
Article
Environmental Sciences
Tom De Swaef, Wouter H. Maes, Jonas Aper, Joost Baert, Mathias Cougnon, Dirk Reheul, Kathy Steppe, Isabel Roldan-Ruiz, Peter Lootens
Summary: This study demonstrates the potential of UAV-based remote sensing to complement or replace traditional visual breeder scoring, allowing for high-throughput field phenotyping applications. The use of thermal sensors provides complementary information to visual-based indices, enabling the analysis of ecophysiological mechanisms under drought stress. Variability in drought tolerance among different species/types of forage grasses confirms the potential for selection within these groups.
Article
Environmental Sciences
Yu Liu, Kenji Hatou, Takanori Aihara, Sakuya Kurose, Tsutomu Akiyama, Yasushi Kohno, Shan Lu, Kenji Omasa
Summary: This study investigates the potential of using UAV mounted with a commercial camera to estimate the SPAD values of naked barley leaves. The results show significant correlations between vegetation indices and SPAD values, with 'G-B' index considered as the most robust for predicting SPAD values. The study highlights the importance of utilizing cheap measurement systems for crop monitoring.
Article
Construction & Building Technology
Ariel Miranda de Souza, Jose Maria Franco de Carvalho, Igor Lopes Salgado, Carol Ferreira Rezende Santos, Flavio Antonio Ferreira, Leonardo Goncalves Pedroti, Rances Castillo Lara, Ricardo Andre Fiorotti Peixoto
Summary: This study evaluates the effects of using waste from ornamental stone processing as fillers in self-compacting micro-concretes. The results show that the waste has good filling function and workability, and it can also reduce CO2 emissions, making the concrete more environmentally friendly.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Analytical
Adam Dlesk, Karel Vach, Karel Pavelka
Summary: The photogrammetric processing of thermal infrared images poses challenges due to low resolution and contrast. This can be overcome through co-processing of TIR and RGB images. Two solutions are presented in the article, each requiring different types of transformations which are discussed in terms of requirements, advantages, disadvantages, and accuracy in experiments.
Article
Engineering, Electrical & Electronic
Hang Gao, Tong Wei, Siran Li
Summary: Accurate localization is crucial for autonomous mobile robots. By combining depth data from a TOF camera with visual-inertial SLAM, depth estimation and mapping can be significantly improved. Precise calibration between sensors is essential for a robust sensor fusion system.
IEEE SENSORS JOURNAL
(2021)
Article
Remote Sensing
Evagoras Evagorou, Christodoulos Mettas, Athos Agapiou, Kyriacos Themistocleous, Spyridon Papavasileiou, Diofantos Hadjimitsis
Summary: This study emphasizes the importance of photographic equipment calibration for evaluating the accuracy of digitization methods of ecclesiastical monuments, comparing internal calibration parameters calculated by different software applications and showcasing the accuracy between models through geo-referenced ground-control-points. The results highlight that the internal calibration parameters of the digital camera used for documentation purposes are essential and should be systematically implemented.
EUROPEAN JOURNAL OF REMOTE SENSING
(2021)
Article
Engineering, Multidisciplinary
Sondos S. Al-Jrajreh, Husam Al-Hamaiedeh, Mazen J. Al-Kheetan, Yazeed S. Jweihan, Tariq Aljaafreh
Summary: This study investigates the replacement of fine aggregates in concrete with untreated and silane-treated marble and granite waste (MGW), and evaluates their impact on various properties of concrete. The results show that using untreated or treated MGW aggregates can improve the water absorption and compressive strength of concrete.
RESULTS IN ENGINEERING
(2023)
Article
Engineering, Biomedical
Danish Masood, Jiang Qi
Summary: This research introduces a new approach for 3D acupoint localization using a fusion of RGB and depth convolutional neural networks (CNN). The aim is to provide real-time guidance for robot-controlled moxibustion therapy. The effectiveness of the approach is proven through the construction of a 3D acupoint dataset and further experiments.
ANNALS OF BIOMEDICAL ENGINEERING
(2022)
Article
Remote Sensing
Xiaoteng Zhou, Chun Liu, Yun Xue, Akram Akbar, Shoujun Jia, Yuan Zhou, Doudou Zeng
Summary: This paper proposes an integrated indoor and outdoor radiometric calibration method, which corrects the vignetting effect and quantum efficiency using the lookup table (LUT) method and exponential nonlinear model respectively. Additionally, an empirical line method is presented to correct the atmospheric path radiance, improving the accuracy of reflectance calculation.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2022)
Article
Engineering, Electrical & Electronic
Shiva Agrawal, Savankumar Bhanderi, Kristina Doycheva, Gordon Elger
Summary: This article introduces a method for environmental perception using multiple sensors, including radar, lidar, and camera sensors. By fusing data from multiple sensors, the perception quality of the sensor system can be improved. Multisensor calibration is necessary for data fusion, which involves transforming data from different sensor coordinates to a common coordinate frame. A new autocalibration method is proposed in this article, which can be used with sensors operating at different frame rates without time synchronization. The experimental results show good performance of the proposed method in multiple sets of measurements.
IEEE SENSORS JOURNAL
(2023)
Article
Automation & Control Systems
Sahyeon Lee, Junhwa Lee, Jong-Woong Park, Sung-Han Sim
Summary: The article proposes a nontarget-based 6-DOF displacement measurement method using combined RGB and depth information. This method utilizes three-dimensional information of measurement points on the target structure obtained with the RGB-D camera and suggests a coordinate transform scheme to determine the 6-DOF displacement in the physical domain.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2021)
Article
Biotechnology & Applied Microbiology
P. Sanmartin, R. Carballeira
Summary: The study found that benzalkonium chloride and water treatments were most effective in preventing bacterial recolonization, while Biotin T was most effective in preventing fungal recolonization after the application of biocidal treatments to remove Apatococcus lobatus from granite walls. Despite no increase in bacterial numbers after treatment, the diversity of bacterial populations was altered.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2021)
Article
Environmental Sciences
P. Sanmartin, A. Z. Miller, B. Prieto, H. A. Viles
Summary: The concept of bioreceptivity, defined by Olivier Guillitte in 1995, has not been restated, reviewed or updated since then. This paper provides a reanalysis of the concept and proposes modifications, emphasizing the need for field-based studies and the addition of a new category of bioreceptivity. Bioreceptivity remains crucial for understanding biological colonization of building materials in both new build and built heritage.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Cristina Catto, Patricia Sanmartin, Davide Gulotta, Federica Troiano, Francesca Cappitelli
Summary: This study investigated the capability of eight bacteria in the removal of silver and black graffiti spray paints, and found that Enterobacter aerogenes, Comamonas sp., and a mixture of Bacillus sp., Delliia lacustris, Sphingobaclerium caeni, and Ochrobactrum anthropi were the most promising for bioremoval of graffiti. The results showed significant changes in FTIR spectra, indicating alterations in the paint structure, along with the presence of live bacteria and an increase in DIC, demonstrating metabolic activity and changes in paint color.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biotechnology & Applied Microbiology
P. Bosch-Roig, J. S. Pozo-Antonio, P. Sanmartin
Summary: Microorganisms isolated from different colored graffiti coatings were tested for their biocleaning potential alone and in combination with Tween? 20, with Candida parapsilosis from red graffiti and Rhodococcus erythropolis from black graffiti showing the best performance.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2021)
Article
Materials Science, Biomaterials
P. Sanmartin, D. Noya-Pintos, E. Fuentes, J. S. Pozo-Antonio
Summary: The study found that the formation of cracks on granite specimens treated with TiO2 plays a crucial role in the level of colonization and bioreceptivity. Cracks act as anchor points for water retention, influencing the early stages of colonization kinetics more than the biocidal power of TiO2.
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Elsa Fuentes, Rafael Carballeira, Beatriz Prieto
Summary: The study characterized the microbial consortium forming biofilms on historical rural granite buildings for the first time, revealing differences compared to urban granite buildings, especially in terms of cyanobacteria and lichenized fungi abundance. Exposure and orientation were identified as important factors influencing the diversity and abundance of microorganisms on walls, with northern orientation favoring a higher diversity of fungi and green algae, and west orientation determining the abundance of lichenized fungi.
APPLIED SCIENCES-BASEL
(2021)
Article
Biotechnology & Applied Microbiology
P. Sanmartin, P. Bosch-Roig, D. Gulotta, R. Fort, I Bosch, F. Cappitelli
Summary: Klebsiella aerogenes and Comamonas testosteroni have been identified as suitable bacteria for graffiti bioremoval, demonstrating high levels of tolerance to graffiti paint and the ability to degrade graffiti material. The experiment showed that K. aerogenes created more holes, while C. testosteroni produced larger holes. Surface microtopography offered detailed information for better understanding bacteria performance.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2021)
Article
Biotechnology & Applied Microbiology
Francesca Cappitelli, Federica Villa, Patricia Sanmartin
Summary: Synthetic polymers have been used in cultural heritage conservation since the 1960s, but their susceptibility to biological deterioration has raised concerns. Future use of synthetic polymers will require a more comprehensive conservation assessment.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2021)
Article
Biotechnology & Applied Microbiology
Patricia Sanmartin, Anxo Mendez, Rafael Carballeira, Elena Lopez
Summary: The combination of UV-A and red LED light significantly enhanced the growth of algae-dominated biofilms, while UV-B plus red LED hindered the proliferation of Bracteacoccus minor, resulting in poor biofilm growth.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2021)
Article
Chemistry, Multidisciplinary
Beatriz Prieto, Patricia Sanmartin, Javier Cancelo-Gonzalez, Lucia Torres, Benita Silva
Summary: A series of studies over the past 20 years investigated the potential alterations caused by herbicide treatments on the construction materials of the Roman wall of Lugo, a UNESCO World Heritage site in NW Spain. Results showed that glyphosate and physical treatments triggered changes in clay minerals in the schists, while oxyfluorfen herbicide led to an increase in chloride, nitrate, and sulfate contents of granite. The most recent study revealed a perceptible increase in lightness and a reduction in the yellow component after the application of Thymus zygis Loefl. ex L. essential oil to granite.
APPLIED SCIENCES-BASEL
(2021)
Article
Biotechnology & Applied Microbiology
Jelena Pavlovic, Pilar Bosch-Roig, Magdalena Ruskova, Matej Plany, Domenico Pangallo, Patricia Sanmartin
Summary: This study analyzed the salt content and microbial ecosystem on salt-contaminated church stone components to explore the causes of damp dark staining. A relationship between microbial data and soluble salts was identified, but no direct association between damp staining and salt content or related microbiota was established.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Environmental Sciences
Elsa Fuentes, Diana Perez-Velon, Beatriz Prieto
Summary: This study investigates the effects of UV-B radiation on biofilms colonising heritage monuments. The research found that high levels of UV-B radiation can alter the growth, physiological state, and composition of surface biofilms, with cyanobacteria showing more resistance to UV-B radiation.
ENVIRONMENTAL RESEARCH
(2022)
Article
Entomology
Anxo Mendez, Luis Martin, Justo Arines, Rafael Carballeira, Patricia Sanmartin
Summary: The increasing use of ornamental illumination affects nocturnal insect communities in urban areas. Selecting specific wavelengths for lighting can reduce the attraction of insects and minimize the environmental impact on nocturnal insects.
Review
Biotechnology & Applied Microbiology
Patricia Sanmartin, Pilar Bosch-Roig, Domenico Pangallo, Lucia Krakova, Miguel Serrano
Summary: The organisms inhabiting built cultural heritage can passively or actively participate in conservation processes. Active participants are focused on for their positive roles in various processes, as well as providing ecosystem services. These organisms can also evolve or mutate in response to changes and acquire new capacities. Recent studies have opened up new avenues of research involving a wide variety of organisms and viruses, which are expected to gain more attention in the future.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Chiara Genova, Elsa Fuentes, Gabriele Favero, Beatriz Prieto
Summary: This study evaluated the cleaning and biocidal potential of natural derivatives, such as essential oils and their active principles, on the growth of different natural biofilms on a granite wall. The results showed that these natural derivatives can be used as alternatives to classical biocides. The combination of Origanum vulgare essential oil with other compounds, due to the majority presence of carvacrol, proved to be one of the most effective treatments. The effectiveness of the treatments varied depending on the biofilm and its ability to adhere to the substrate.
Article
Engineering, Multidisciplinary
Sicheng Jiao, Shixiang Wang, Minge Gao, Min Xu
Summary: This paper presents a non-contact method of thickness measurement for thin-walled rotary shell parts based on a chromatic confocal sensor. The method involves using a flip method to obtain surface profiles from both sides of the workpiece, measuring the decentration and tilt errors of the workpiece using a centering system, establishing a unified reference coordinate system, reconstructing the external and internal surface profiles, and calculating the thickness. Experimental results show that the method can accurately measure the thickness of a sapphire spherical shell workpiece and is consistent with measurements of other materials.
Article
Engineering, Multidisciplinary
Rajeev Kumar, Sajal Agarwal, Sarika Pal, Alka Verma, Yogendra Kumar Prajapati
Summary: This study evaluated the performance of a CaF2-Ag-MXene-based surface plasmon resonance (SPR) sensor at different wavelengths. The results showed that the sensor achieved the maximum sensitivity at a wavelength of 532 nm, and higher sensitivities were obtained at shorter wavelengths at the expense of detection accuracy.
Article
Engineering, Multidisciplinary
Attilio Di Nisio, Gregorio Andria, Francesco Adamo, Daniel Lotano, Filippo Attivissimo
Summary: Capacitive sensing is a widely used technique for a variety of applications, including avionics. However, current industry standard Capacitive Level Sensors (CLSs) used in helicopters perform poorly in terms of sensitivity and dynamic characteristics. In this study, novel geometries were explored and three prototypes were built and tested. Experimental validation showed that the new design featuring a helicoidal slit along the external electrode of the cylindrical probe improved sensitivity, response time, and linearity.
Article
Engineering, Multidisciplinary
Kai Yang, Huiqin Wang, Ke Wang, Fengchen Chen
Summary: This paper proposes an effective measurement method for dynamic compaction construction based on time series model, which enables real-time monitoring and measurement of anomalies and important construction parameters through simulating motion state transformation and running time estimation.
Article
Engineering, Multidisciplinary
Hui Fu, Qinghua Song, Jixiang Gong, Liping Jiang, Zhanqiang Liu, Qiang Luan, Hongsheng Wang
Summary: An automatic detection and pixel-level quantification model based on joint Mask R-CNN and TransUNet is developed to accurately evaluate microcrack damage on the grinding surfaces of engineering ceramics. The model is effectively trained on actual micrograph image dataset using a joint training strategy. The proposed model achieves reliable automatic detection and fine segmentation of microcracks, and a skeleton-based quantification model is also proposed to provide comprehensive and precise measurements of microcrack size.
Review
Engineering, Multidisciplinary
Sang Yeob Kim, Da Yun Kwon, Arum Jang, Young K. Ju, Jong-Sub Lee, Seungkwan Hong
Summary: This paper reviews the categorization and applications of UAV sensors in forensic engineering, with a focus on geotechnical, structural, and water infrastructure fields. It discusses the advantages and disadvantages of sensors with different wavelengths and addresses the challenges of current UAV technology and recommendations for further research in forensic engineering.
Article
Engineering, Multidisciplinary
Anton Nunez-Seoane, Joaquin Martinez-Sanchez, Erik Rua, Pedro Arias
Summary: This article compares the use of Mobile Laser Scanners (MLS) and Aerial Laser Scanners (ALS) for digitizing the road environment and detecting road slopes. The study found that ALS data and its corresponding algorithm achieved better detection and delimitation results compared to MLS. Measuring the road from a terrestrial perspective negatively impacted the detection process, while an aerial perspective allowed for scanning of the entire slope structure.
Article
Engineering, Multidisciplinary
Nur Luqman Saleh, Aduwati Sali, Raja Syamsul Azmir Raja Abdullah, Sharifah M. Syed Ahmad, Jiun Terng Liew, Fazirulhisyam Hashim, Fairuz Abdullah, Nur Emileen Abdul Rashid
Summary: This study introduces an enhanced signal processing scheme for detecting mouth-click signals used by blind individuals. By utilizing additional band-pass filtering and other steps, the detection accuracy is improved. Experimental results using artificial signal data showed a 100% success rate in detecting obstacles. The emerging concepts in this research are expected to benefit radar and sonar system applications.
Article
Engineering, Multidisciplinary
Jiqiang Tang, Shengjie Qiu, Lu Zhang, Jinji Sun, Xinxiu Zhou
Summary: This paper studies the magnetic noise level of a compact high-performance magnetically shielded room (MSR) under different operational conditions and establishes a quantitative model for magnetic noise calculation. Verification experiments show the effectiveness of the proposed method.
Review
Engineering, Multidisciplinary
Krzysztof Bartnik, Marcin Koba, Mateusz Smietana
Summary: The demand for miniaturized sensors in the biomedical industry is increasing, and optical fiber sensors (OFSs) are gaining popularity due to their small size, flexibility, and biocompatibility. This study reviews various OFS designs tested in vivo and identifies future perspectives and challenges for OFS technology development from a user perspective.
Article
Engineering, Multidisciplinary
Yue Wang, Lei Zhou, Zihao Li, Jun Wang, Xuangou Wu, Xiangjun Wang, Lei Hu
Summary: This paper presents a 3-D reconstruction method for dynamic stereo vision of metal surface based on line structured light, overcoming the limitation of the measurement range of static stereo vision. The proposed method uses joint calibration and global optimization to accurately reconstruct the 3-D coordinates of the line structured light fringe, improving the reconstruction accuracy.
Article
Engineering, Multidisciplinary
Jaafar Alsalaet
Summary: Order tracking analysis is an effective tool for machinery fault diagnosis and operational modal analysis. This study presents a new formulation for the data equation of the second-generation Vold-Kalman filter, using separated cosine and sine kernels to minimize error and provide smoother envelopes. The proposed method achieves high accuracy even with small weighting factors.
Article
Engineering, Multidisciplinary
Tonglei Cao, Kechen Song, Likun Xu, Hu Feng, Yunhui Yan, Jingbo Guo
Summary: This study constructs a high-resolution dataset for surface defects in ceramic tiles and addresses the scale and quantity differences in defect distribution. An improved approach is proposed by introducing a content-aware feature recombination method and a dynamic attention mechanism. Experimental results demonstrate the superior accuracy and efficiency of the proposed method.
Article
Engineering, Multidisciplinary
Qinghong Fu, Yunxi Lou, Jianghui Deng, Xin Qiu, Xianhua Chen
Summary: Measurement and quantitative characterization of aging-induced gradient properties is crucial for accurate analysis and design of asphalt pavement. This research proposes the composite specimen method to obtain asphalt binders at different depths within the mixture and uses dynamic shear rheometer tests to measure aging-induced gradient properties and reveal internal mechanisms. G* master curves are constructed to investigate gradient aging effects in a wide range. The study finds that the composite specimen method can effectively restore the boundary conditions and that it is feasible to study gradient aging characteristics within the asphalt mixture. The study also observes variations in G* and delta values and the depth range of gradient aging effects for different aging levels.
Article
Engineering, Multidisciplinary
Min Li, Kai Wei, Tianhe Xu, Yali Shi, Dixing Wang
Summary: Due to the limitations of ground monitoring stations in China for the BDS, the accuracy of BDS Medium Earth Orbit (MEO) satellite orbits can be influenced. To overcome this, low Earth orbit (LEO) satellites can be used as additional monitoring stations. In this study, data from two LEO satellites were collected to improve the precise orbit determination of the BDS. By comparing the results with GPS and BDS-2/3 solutions, it was found that including the LEO satellites significantly improved the accuracy of GPS and BDS-2/3 orbits.
