Digital image processing based approach for tunnel excavation faces

Leu, Sou-Sen; Chang, Shiu-Lin

doi:10.1016/j.autcon.2005.02.004

Cited by 33 publications

(10 citation statements)

References 23 publications

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“…Image acquisition of tunnel facing, its processing is used for rock mass rating, geological features (faults, joints, etc. ), and interpolation technique on two consecutive images established in 3D visualization [31].…”

Section: Remote Sensing and Gis In Geological Applicationsmentioning

confidence: 99%

Progress and Trends in Image Processing Applications in Civil Engineering: Opportunities and Challenges

Salunkhe

Gobinath²,

Vinay³

et al. 2022

Advances in Civil Engineering

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Technological advancements in electronic storage have been trending for cloud computing. The revolution of this computer technology with machine learning and artificial intelligence has created prodigious platforms to the various disciplines of science and technology. Civil engineering is the oldest discipline, and due to the never-ending demand of this domain, it is rapidly adapting to newer computer techniques like image processing, deep learning, big data analysis, neural networks, building information modeling (BIM), unmanned aerial vehicle (UAV) system, digital image correlation (DIC), and many more. In the current paper, we portrayed the primary research and achievements of AI and image processing applications in the civil domain. The paper is divided in two parts. The first part provides analysis of existing methods along with examples relevant to the civil domain where it is incorporated. The second part elaborates scientometric study constituting 605 documents (Science Direct database) published in the last two decades. The bibliometrics are further used for producing analytical frameworks based on publications, citations, top journals, top institutions, and funding sources. This study serves as a guide for readers to identify research gaps and use the review for potential future study.

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Section: Remote Sensing and Gis In Geological Applicationsmentioning

confidence: 99%

Progress and Trends in Image Processing Applications in Civil Engineering: Opportunities and Challenges

Salunkhe

Gobinath²,

Vinay³

et al. 2022

Advances in Civil Engineering

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“…Digital image processing allows one to enhance image features of interest while attenuating detail irrelevant to a given application and then extract useful information from the enhanced image (Leu and Chang 2005). A series of image preprocessing task including image enhancement, image segmentation and image thinning were applied to get the accurate BLT from the image containing excessive noise as shown in figure 4.…”

Section: Digital Image Processingmentioning

confidence: 99%

Nondestructive measurement of bond line thickness and die tilt in the die attach for semiconductor packaging

Chang

Deka

Tseng

2008

Nondestructive Testing and Evaluation

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2008) Nondestructive measurement of bond line thickness and die tilt in the die attach for semiconductor packaging, Nondestructive Testing and Evaluation, 23:2, 89-98,The present investigation describes about the development of a cost effective measurement technique for automatic determination of bond-line thickness and die tilt in die attach for semiconductor packaging process. Bond line thickness (BLT) and die tilt in the die attach were measured using an optical non contact scanning probe system. The probe system was consisted of a line laser diode as the light source and a high resolution charge couple device (CCD) camera to acquire the image of the laser line. Software was developed considering least square polynomials to acquire the objects space coordinate from the image coordinate in CCD. A transparent grid with regularly spaced nodal points was used to construct the space mapping function. This measurement system can accurately determine the BLT by scanning it at high speed with laser line and detecting the image by CCD. The BLT and die tilt of a die attached chip of substrate height 800 mm and cross section 15 mm £ 15 mm were measured to be approximately 76.3 mm and 0.0078, respectively.

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“…In rock tunnel projects, the New Austrian Tunneling Method (NATM) is the most used construction method. Geological logging and rock mass classification are two main tasks before NATM tunnel excavation (T & Chang, 2005). According to (Lee, 2012), because of the increase in economic and social development, long tunnels are in high demand due to their different uses, such as transport and water supply.…”

Section: Introductionmentioning

confidence: 99%

“…It can be said that digital cameras and image processing are capable of measuring large textured samples quantitatively in colour (Lebrun et al, 2004). The main objective of image processing is to extract specific characteristics from the collected tunnel excavation facing images (such as faults, joints and shear zones) (T & Chang, 2005). In both qualitative and quantitative outcomes relating to the JH classification, the results of the study will contribute to determining the weathering grade of the tunnel face.…”

Section: Introductionmentioning

confidence: 99%

The Evolution of Geotech - 25 Years of Innovation

Hammah¹,

Yacoub²,

McQuillan³

et al. 2021

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I have been teaching and researching rock engineering and practicing as a consultant since 1972. I have spent most of that time in underground mining. I have seen significant changes, both evolutionary and radical, in the sector. In this paper, I reflect on some of these changes in mining geomechanical practice. I will also comment on some of the positive and occasionally less positive impacts of these changes. One constant throughout my career is that geomechanical designs will always be fraught with uncertainty. As a result, we will discuss geomechanical design as being, in its essence, a risk management exercise. I will argue that, as impressive as modern numerical analysis techniques are, they do not on their own mitigate design risk; under worst-case scenarios, they make things worse. Empirical and simple models must be used as a check. The paper intends to provoke healthy skepticism in geomechanics practitioners, designers and managers regarding all the aspects of the geomechanical analysis and design process. A failure to recognize the risks in these processes can have catastrophic effects.

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Digital image processing based approach for tunnel excavation faces

Cited by 33 publications

References 23 publications

Progress and Trends in Image Processing Applications in Civil Engineering: Opportunities and Challenges

Progress and Trends in Image Processing Applications in Civil Engineering: Opportunities and Challenges

Nondestructive measurement of bond line thickness and die tilt in the die attach for semiconductor packaging

The Evolution of Geotech - 25 Years of Innovation

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