340 research outputs found
Iteratively Optimized Patch Label Inference Network for Automatic Pavement Disease Detection
We present a novel deep learning framework named the Iteratively Optimized
Patch Label Inference Network (IOPLIN) for automatically detecting various
pavement diseases that are not solely limited to specific ones, such as cracks
and potholes. IOPLIN can be iteratively trained with only the image label via
the Expectation-Maximization Inspired Patch Label Distillation (EMIPLD)
strategy, and accomplish this task well by inferring the labels of patches from
the pavement images. IOPLIN enjoys many desirable properties over the
state-of-the-art single branch CNN models such as GoogLeNet and EfficientNet.
It is able to handle images in different resolutions, and sufficiently utilize
image information particularly for the high-resolution ones, since IOPLIN
extracts the visual features from unrevised image patches instead of the
resized entire image. Moreover, it can roughly localize the pavement distress
without using any prior localization information in the training phase. In
order to better evaluate the effectiveness of our method in practice, we
construct a large-scale Bituminous Pavement Disease Detection dataset named
CQU-BPDD consisting of 60,059 high-resolution pavement images, which are
acquired from different areas at different times. Extensive results on this
dataset demonstrate the superiority of IOPLIN over the state-of-the-art image
classification approaches in automatic pavement disease detection. The source
codes of IOPLIN are released on \url{https://github.com/DearCaat/ioplin}.Comment: Revision on IEEE Trans on IT
Automatic Classification and Quantification of Basic Distresses on Urban Flexible Pavement through Convolutional Neural Networks
[EN] Pavement condition assessment is a critical step in road pavement management. In contrast to the automatic and objective methods used for rural roads, the most commonly used method in urban areas is the development of visual surveys usually filled out by technicians that leads to a subjective pavement assessment. While most previous studies on automatic identification of distresses focused on crack detection, this research aims not only to cover the identification and classification of multiple urban flexible pavement distresses (longitudinal and transverse cracking, alligator cracking, raveling, potholes, and patching), but also to quantify them through the application of Convolutional Neural Networks. Additionally, this study also proposes a methodology for an automatic pavement assessment considering the different stages developed in this research. This methodology allows for a more efficient and reliable pavement assessment, minimizing the cost and time required by the current visual surveys.The study presented in this paper is part of the research project
titled SIMEPU Sistema Integral de Mantenimiento Eficiente de
Pavimentos Urbanos, funded by the Spanish Ministries of Science
and Innovation and Universities, as well as the European Regional
Development Fund under Grant No. RTC-2017-6148-7. The
authors also acknowledge the support of partner companies Pavasal
Empresa Constructora, S.A. and CPS Infraestructuras, Movilidad y
Medio Ambiente, S.L. and the Valencia City Council.Llopis-Castelló, D.; Paredes Palacios, R.; Parreño-Lara, M.; García-Segura, T.; Pellicer, E. (2021). Automatic Classification and Quantification of Basic Distresses on Urban Flexible Pavement through Convolutional Neural Networks. Journal of Transportation Engineering, Part B: Pavements. 147(4):1-8. https://doi.org/10.1061/JPEODX.000032118147
An Exploration of Recent Intelligent Image Analysis Techniques for Visual Pavement Surface Condition Assessment.
Road pavement condition assessment is essential for maintenance, asset management, and budgeting for pavement infrastructure. Countries allocate a substantial annual budget to maintain and improve local, regional, and national highways. Pavement condition is assessed by measuring several pavement characteristics such as roughness, surface skid resistance, pavement strength, deflection, and visual surface distresses. Visual inspection identifies and quantifies surface distresses, and the condition is assessed using standard rating scales. This paper critically analyzes the research trends in the academic literature, professional practices and current commercial solutions for surface condition ratings by civil authorities. We observe that various surface condition rating systems exist, and each uses its own defined subset of pavement characteristics to evaluate pavement conditions. It is noted that automated visual sensing systems using intelligent algorithms can help reduce the cost and time required for assessing the condition of pavement infrastructure, especially for local and regional road networks. However, environmental factors, pavement types, and image collection devices are significant in this domain and lead to challenging variations. Commercial solutions for automatic pavement assessment with certain limitations exist. The topic is also a focus of academic research. More recently, academic research has pivoted toward deep learning, given that image data is now available in some form. However, research to automate pavement distress assessment often focuses on the regional pavement condition assessment standard that a country or state follows. We observe that the criteria a region adopts to make the evaluation depends on factors such as pavement construction type, type of road network in the area, flow and traffic, environmental conditions, and region\u27s economic situation. We summarized a list of publicly available datasets for distress detection and pavement condition assessment. We listed approaches focusing on crack segmentation and methods concentrating on distress detection and identification using object detection and classification. We segregated the recent academic literature in terms of the camera\u27s view and the dataset used, the year and country in which the work was published, the F1 score, and the architecture type. It is observed that the literature tends to focus more on distress identification ( presence/absence detection) but less on distress quantification, which is essential for developing approaches for automated pavement rating
Utilising Convolutional Neural Networks for Pavement Distress Classification and Detection
This paper examines deep learning models for accurate
and efficient identification and classification of pavement
distresses. In it, a variety of related studies conducted on the topic as well as the various identification and classification methods proposed, such as edge detection, machine learning classification informed by statistical feature extraction, artificial neural networks, and real-time object detection systems, are discussed. The study investigates the effect of image processing techniques such as grayscaling, background subtraction, and image resizing on the performance and generalizability of the models. Using convolutional neural networks (CNN) architectures, this paper proposes a model that correctly classifies images into five pavement distress categories, namely fatigue (or alligator), longitudinal, transverse, patches, and craters, with an accuracy rate of 90.4% and a recall rate of 90.1%. The model is contrasted to a current state-of-the-art model based on the You Only Look Once framework as well as a baseline CNN model to demonstrate the impact of the image processing and architecture building techniques discussed on performance. The findings of this paper contribute to the fields of computer vision and infrastructure monitoring by demonstrating the efficacy of convolutional neural networks (CNNs) in image classification and the viability of using CNNbased models to automate pavement condition monitoring
Deep Thermal Imaging: Proximate Material Type Recognition in the Wild through Deep Learning of Spatial Surface Temperature Patterns
We introduce Deep Thermal Imaging, a new approach for close-range automatic
recognition of materials to enhance the understanding of people and ubiquitous
technologies of their proximal environment. Our approach uses a low-cost mobile
thermal camera integrated into a smartphone to capture thermal textures. A deep
neural network classifies these textures into material types. This approach
works effectively without the need for ambient light sources or direct contact
with materials. Furthermore, the use of a deep learning network removes the
need to handcraft the set of features for different materials. We evaluated the
performance of the system by training it to recognise 32 material types in both
indoor and outdoor environments. Our approach produced recognition accuracies
above 98% in 14,860 images of 15 indoor materials and above 89% in 26,584
images of 17 outdoor materials. We conclude by discussing its potentials for
real-time use in HCI applications and future directions.Comment: Proceedings of the 2018 CHI Conference on Human Factors in Computing
System
RoadScan: A Novel and Robust Transfer Learning Framework for Autonomous Pothole Detection in Roads
This research paper presents a novel approach to pothole detection using Deep
Learning and Image Processing techniques. The proposed system leverages the
VGG16 model for feature extraction and utilizes a custom Siamese network with
triplet loss, referred to as RoadScan. The system aims to address the critical
issue of potholes on roads, which pose significant risks to road users.
Accidents due to potholes on the roads have led to numerous accidents. Although
it is necessary to completely remove potholes, it is a time-consuming process.
Hence, a general road user should be able to detect potholes from a safe
distance in order to avoid damage. Existing methods for pothole detection
heavily rely on object detection algorithms which tend to have a high chance of
failure owing to the similarity in structures and textures of a road and a
pothole. Additionally, these systems utilize millions of parameters thereby
making the model difficult to use in small-scale applications for the general
citizen. By analyzing diverse image processing methods and various
high-performing networks, the proposed model achieves remarkable performance in
accurately detecting potholes. Evaluation metrics such as accuracy, EER,
precision, recall, and AUROC validate the effectiveness of the system.
Additionally, the proposed model demonstrates computational efficiency and
cost-effectiveness by utilizing fewer parameters and data for training. The
research highlights the importance of technology in the transportation sector
and its potential to enhance road safety and convenience. The network proposed
in this model performs with a 96.12 % accuracy, 3.89 % EER, and a 0.988 AUROC
value, which is highly competitive with other state-of-the-art works.Comment: 6 pages, 5 figures, Accepted at the IEEE 7th Conference on
Communication and Information Technology 202
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