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Relevant bibliographies by topics / Boundary artifacts

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Academic literature on the topic 'Boundary artifacts'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Boundary artifacts"

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Reeves, S. J. "Fast image restoration without boundary artifacts." IEEE Transactions on Image Processing 14, no. 10 (2005): 1448–53. http://dx.doi.org/10.1109/tip.2005.854474.

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Hovden, Robert, Yi Jiang, Huolin L. Xin, and Lena F. Kourkoutis. "Periodic Artifact Reduction in Fourier Transforms of Full Field Atomic Resolution Images." Microscopy and Microanalysis 21, no. 2 (2015): 436–41. http://dx.doi.org/10.1017/s1431927614014639.

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AbstractThe discrete Fourier transform is among the most routine tools used in high-resolution scanning/transmission electron microscopy (S/TEM). However, when calculating a Fourier transform, periodic boundary conditions are imposed and sharp discontinuities between the edges of an image cause a cross patterned artifact along the reciprocal space axes. This artifact can interfere with the analysis of reciprocal lattice peaks of an atomic resolution image. Here we demonstrate that the recently developed Periodic Plus Smooth Decomposition technique provides a simple, efficient method for reliab

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Aghdasi, F., and R. K. Ward. "Reduction of boundary artifacts in image restoration." IEEE Transactions on Image Processing 5, no. 4 (1996): 611–18. http://dx.doi.org/10.1109/83.491337.

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Luna-Reyes, Luis Felipe, Natalie Helbig, and Xiaoyi Yerden. "Performance Information Artifacts." International Journal of Public Administration in the Digital Age 8, no. 1 (2021): 1–16. http://dx.doi.org/10.4018/ijpada.20210101.oa6.

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The field of performance management is premised on the centrality of measurement and performance information use in everyday decision making and practice. Information is managed through the use of information systems, but research shows that implementing these technological systems is not enough. This research responds to recent calls for a better understanding of performance information use and the role of dialogue among stakeholders in promoting learning and system change. Through case analysis and qualitative modeling, it proposes the concept of performance information artifacts, and the ne

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Bardsley, Johnathan M., and Aaron Luttman. "Dealing with boundary artifacts in MCMC-based deconvolution." Linear Algebra and its Applications 473 (May 2015): 339–58. http://dx.doi.org/10.1016/j.laa.2014.09.023.

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Matakos, A., S. Ramani, and J. A. Fessler. "Accelerated Edge-Preserving Image Restoration Without Boundary Artifacts." IEEE Transactions on Image Processing 22, no. 5 (2013): 2019–29. http://dx.doi.org/10.1109/tip.2013.2244218.

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Reed, Mark S. C., and K. M. Flurchick. "Investigation of artifacts due to periodic boundary conditions." Computer Physics Communications 95, no. 1 (1996): 39–46. http://dx.doi.org/10.1016/0010-4655(95)00140-9.

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Sorel, M. "Removing Boundary Artifacts for Real-Time Iterated Shrinkage Deconvolution." IEEE Transactions on Image Processing 21, no. 4 (2012): 2329–34. http://dx.doi.org/10.1109/tip.2011.2176344.

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Gošić, Milena. "Skeuomorphism, Boundary Objects and Socialization of the Chalcolithic Metallurgy in the Southern Levant." Issues in Ethnology and Anthropology 10, no. 3 (2016): 717. http://dx.doi.org/10.21301/eap.v10i3.8.

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Metalworking emerged in the southern Levant as a new ritual practice during the late phase of the Ghassulian culture, ca. 4300–3900 BC. Ghassulian metalworkers cast objects in both pure and alloyed copper. All the artifacts produced during this time span were ritual. The aim of the present paper is to discuss the socialization process of the Ghassulian metallurgy and its copper objects, by using the concepts of skeuomorphism and boundary objects. Ghassulian copper artifacts can be divided into two groups. The first group consists of artifacts, such as maceheads, chisels and axes, which were pr

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Heidari, A. Homayoun, and Murthy N. Guddati. "Highly accurate absorbing boundary conditions for wide-angle wave equations." GEOPHYSICS 71, no. 3 (2006): S85—S97. http://dx.doi.org/10.1190/1.2192914.

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We develop a new class of absorbing boundary conditions (ABCs) to prevent unwanted artifacts and wraparounds associated with aperture truncation in migration/modeling using high-order, one-way wave equations. The fundamental approach behind the proposed development is the efficient discretization of the half-space, beyond the boundary of interest, using midpoint-integrated imaginary finite elements, an idea recently utilized in the development of effective one-way wave equations. The proposed absorbing boundary conditions essentially add absorbing layers at the aperture truncation points. We d

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Dissertations / Theses on the topic "Boundary artifacts"

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Uppström, Elin. "Designing, Theorizing, and Reflecting on Information Systems Artifacts and Value Co-Creation in e-Government." Doctoral thesis, Stockholms universitet, Institutionen för data- och systemvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-142564.

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E-government services in the form of information systems (IS) artifacts create a new arena for co-creation that governments aim to leverage. Design of and knowledge about IS artifacts in value co-creation in e-government can thereby be considered valuable for the future development of e-government. How IS artifacts are used in value co-creation and co-destruction and how the artifacts are developed is however not well understood. This thesis addresses the problem of how to design for and understand value co-creation in e-government. To address the problem stated, three research questions are p

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Stevens, Gunnar [Verfasser]. "Understanding and designing appropriation infrastructures : artifacts as boundary objects in the continuous software development / von Gunnar Stevens." 2009. http://d-nb.info/1003105963/34.

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Kotera, Jan. "Nestandardní úlohy v odstranění rozmazání obrazu." Doctoral thesis, 2020. http://www.nusl.cz/ntk/nusl-437543.

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Title: Image Deblurring in Demanding Conditions Author: Jan Kotera Department: Institute of Information Theory and Automation, Czech Academy of Sciences Supervisor: Doc. Ing. Filip Šroubek, Ph.D., DSc., Institute of Information Theory and Automation, Czech Academy of Sciences Abstract: Image deblurring is a computer vision task consisting of removing blur from image, the objective is to recover the sharp image corresponding to the blurred input. If the nature and shape of the blur is unknown and must be estimated from the input image, image deblurring is called blind and naturally presents a m

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Books on the topic "Boundary artifacts"

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Slusser, George. Galactic Center Two. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252038228.003.0006.

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This chapter examines Nigel Walmsley's space odyssey in In the Ocean of Night and Across the Sea of Suns, which span the dates from 1999 to 2061. By the end of the first novel, Nigel has discovered a cosmic struggle between machine intelligence and organic life that will soon engulf Earth. Through several contacts with alien artifacts and entities that had come to Earth in both prehistoric and recent times, he predicts the coming of the machines. In Across the Sea of Suns, Nigel does battle with the machines with the help of organic life forms he finds on the moon of a planet in distant Epsilo

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Book chapters on the topic "Boundary artifacts"

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Smedlund, Anssi, and Ville Eloranta. "Service Artifacts as Co-creation Boundary Objects in Digital Platforms." In Translational Systems Sciences. Springer Japan, 2014. http://dx.doi.org/10.1007/978-4-431-54267-4_3.

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Cabitza, Federico. "At the Boundary of Communities and Roles: Boundary Objects and Knowledge Artifacts as Resources for IS Design." In From Information to Smart Society. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09450-2_13.

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Suk, Jung-Youp, Gun-Woo Lee, and Kuhn-Il Lee. "Effective Blocking Artifact Reduction Using Classification of Block Boundary Area." In Advances in Multimedia Information Processing - PCM 2005. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11582267_53.

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Salido, Julie Ann Acebuque, Conrado Ruiz Jr., and Nelson Marcos. "Lesion Boundary Segmentation With Artifacts Removal and Melanoma Detection in Skin Lesion Images." In Advances in Computational Intelligence and Robotics. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-9069-9.ch013.

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Melanoma is a severe form of skin cancer characterized by the rapid multiplication of pigment-producing cells. A problem on analysis of these images is interesting because of the existence of artifacts that produces noise such as hair, veins, water residue, illuminations, and light reflections. An important step in the diagnosis of melanoma is the removal and reduction of these artifacts that can inhibit the examination to accurately segment the skin lesion from the surrounding skin area. A simple method for artifacts removal for extracting skin lesion is implemented based on image enhancement and morphological operators. This is used for training together with some augmentation techniques on images for melanoma detection. The experimental results show that artifact removal and lesion segmentation in skin lesion images performed a true detection rate of 95.37% for melanoma skin lesion segmentation, and as high as 92.5% accuracy for melanoma detection using both GoogLeNet and Resnet50.

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Bulatov, Vasily, and Wei Cai. "More About Periodic Boundary Conditions." In Computer Simulations of Dislocations. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780198526148.003.0009.

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We have already used periodic boundary conditions (PBC) for the static and dynamic simulations described in Chapters 2 and 3. There, PBC were applied along one or two directions of the simulation cell. Application of PBC in all three directions holds an important advantage when one’s goal is to examine the behavior in the bulk: under fully three-dimensional (3D) PBC, the simulated solid can be free of any surfaces. By comparison, the simulations discussed in the previous chapters all contained free surfaces or artificial interfaces in the directions where PBC were not applied. Full 3D PBC are easy to implement in an atomistic simulation through the use of scaled coordinates. However, there are important technical issues specific to simulations of lattice dislocations. First, a fully periodic simulation cell can accommodate only such dislocation arrangements whose net Burgers vector is zero. Thus, the minimal number of dislocations that can be introduced in a periodic supercell is two, i.e. a dislocation dipole. Two dislocations forming a dipole are bound to interact with each other, as well as with their periodic images. Associated with these interactions are additional strain, energy, and forces whose effects can “pollute” the calculated results. The good news is that, in most cases, the artifacts of PBC can be quantified through the use of linear elasticity theory so that physical properties of dislocations can be accurately extracted. Given the simplicity and robustness of PBC, the extrawork required to extract physical results is well worth it. This chapter describes how to evaluate and eliminate the artifacts that inevitably appear when 3D PBC are used for atomistic simulations of dislocations. In the following three sections, we show how to take full advantage of PBC when one wants to calculate the displacement field induced by a dislocation (Section 5.1), the dislocation’s core energy (Section 5.2) and Peierls stress (Section 5.3). The common theme for all three case studies is an attempt to construct a solution of the elasticity equations in a periodic domain by superimposing a periodic array of solutions of an infinite domain.

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Donatelli, Marco, and Stefano Serra-Capizzano. "On the Treatment of Boundary Artifacts in Image Restoration by Reflection and/or Anti-Reflection." In Matrix Methods: Theory, Algorithms and Applications. WORLD SCIENTIFIC, 2010. http://dx.doi.org/10.1142/9789812836021_0013.

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Diviacco, Paolo. "On Formalization and Representation in Collaborative Research." In Advances in Web Technologies and Engineering. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5261-1.ch004.

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The aim of this chapter is to delve into the issues related to the formalization and transmission of knowledge within the scope of collaborative scientific research and to propose a new approach to address such difficulties. Analyzing methods and practices of collaborative research, the authors highlight that observation and reasoning are systematically prone to flaws, so that theorization is made highly conjectural. To gain reliability, points of views and visions need then a support from a community; in other words, they become public. To allow convergence to take place, conceptualizations need to be understood by people with possibly different cognitive models. Therefore, the authors propose using artifacts that can be strongly structured in individual use while weakly structured in common use. These artifacts take place generally as graphic representations, and as in the case of the arts, they can be realistic or abstract, they can emphasize, hide, or allow different, contrasting and concurrent interpretations of the exposed knowledge. Keywords: Collaborative Research, Scientific reasoning, Knowledge Representation, Knowledge Formalization, Boundary objects.

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Hassmiller Lich, Kristen, and Jill Kuhlberg. "Engaging Stakeholders in Mapping and Modeling Complex Systems Structure to Inform Population Health Research and Action." In Complex Systems and Population Health. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190880743.003.0009.

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Systems science methods are designed to study “wholes” and to support decision-making in the context of complexity. While these methods are powerful in the hands of researchers, they can be transformative when used collaboratively with the stakeholders impacted by and capable of impacting a population health phenomena. This chapter introduces group model building (GMB), developed by practitioners of system dynamics seeking to meaningfully engage system stakeholders in all stages of model building and use. The authors describe the general approach, its alignment with community-based participatory research, and the role system dynamics artifacts and other system maps serve as “boundary objects” to facilitate co-learning and collaboration among individuals with diverse experiences, world views, disciplinary backgrounds, and/or organizational affiliations. The chapter introduces emerging examples of GMB processes, adapted for use with other systems science modeling methods, as well as other examples of collaborative system mapping that can accentuate the GMB toolbox and generate additional boundary objects

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Zanin, Filippo, Maurizio Massaro, and Carlo Bagnoli. "Towards a Competitive Knowledge Management Strategy Approach in the University Setting." In Building a Competitive Public Sector with Knowledge Management Strategy. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4434-2.ch017.

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The formulation of a competitive strategy requires an appropriate incorporation of knowledge contents for fostering the development of the competitive advantage. Visual artifacts, in the form of strategy maps, are generally considered useful for making the intertwining between different knowledge bases within the strategy making explicit. However, literature has not systematically analyzed the methods and tools for explaining how strategy making is enabled and constrained. Moreover, the public sector is a research field in which there is a call for a deeper understanding of strategic issues. In order to fill this gap, this chapter explores how strategy maps shape the strategy processes mobilizing knowledge across boundaries. Using the case study of Ca’Foscari University of Venice, a public body in the Italian University setting, the authors find that strategy maps function as boundary objects and can make strategizing a joint managerial practice.

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Tamilselvi, P. R. "Segmentation of Renal Calculi in Ultrasound Kidney Images Using Modified Watershed Method." In Medical Imaging. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0571-6.ch050.

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US images are a commonly used tool for renal calculi diagnosis, although they are time consuming and tedious for radiologists to manually detect and calculate the size of the renal calculi. It is very difficult to properly segment the US image to detect interested area of objects with the correct position and shape due to speckle formation and other artifacts. In addition, boundary edges may be missing or weak and usually incomplete at some places. With that point of view, the proposed method is developed for renal calculi segmentation. A new segmentation method is proposed in this chapter. Here, new region indicators and new modified watershed transformation are utilized. The proposed method is comprised of four major processes, namely preprocessing, determination of outer and inner region indictors, and modified watershed segmentation with ANFIS performance. The results show the effectiveness of proposed segmentation methods in segmenting the kidney stones and the achieved improvement in sensitivity and specificity measures.

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Conference papers on the topic "Boundary artifacts"

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Renting Liu and Jiaya Jia. "Reducing boundary artifacts in image deconvolution." In 2008 15th IEEE International Conference on Image Processing. IEEE, 2008. http://dx.doi.org/10.1109/icip.2008.4711802.

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Chung, Chia-Fang, Kristin Dew, Allison Cole, et al. "Boundary Negotiating Artifacts in Personal Informatics." In CSCW '16: Computer Supported Cooperative Work and Social Computing. ACM, 2016. http://dx.doi.org/10.1145/2818048.2819926.

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Fan, Zhigang. "Boundary artifacts reduction in vector error diffusion." In Electronic Imaging '99, edited by Giordano B. Beretta and Reiner Eschbach. SPIE, 1998. http://dx.doi.org/10.1117/12.334592.

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Singh, Singara. "Tile Boundary Artifacts Reduction of JPEG2000 Compressed Images." In The First International Conference on Information Technology Convergence and Services. Academy & Industry Research Collaboration Center (AIRCC), 2012. http://dx.doi.org/10.5121/csit.2012.2126.

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Reeves, Stanley J. "Fast restoration of PMMW imagery without boundary artifacts." In AeroSense 2002, edited by Roger Appleby, Gerald C. Holst, and David A. Wikner. SPIE, 2002. http://dx.doi.org/10.1117/12.477469.

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Hadhazi, Daniel, Aron Horvath, and Gabor Horvath. "Improved ADMM based TV minimized Image deblurring without boundary artifacts." In 2016 IEEE International Conference on Systems, Man, and Cybernetics (SMC). IEEE, 2016. http://dx.doi.org/10.1109/smc.2016.7844534.

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Cai, Jiji, Liang Chang, Hongbin Wang, Cheolkon Jung, and Joongkyu Kim. "Boundary-Preserving Depth Upsampling Without Texture Copying Artifacts and Holes." In 2017 IEEE International Symposium on Multimedia (ISM). IEEE, 2017. http://dx.doi.org/10.1109/ism.2017.11.

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Jeon, Byeungwoo, Jechang Jeong, and Jae M. Jo. "Blocking artifacts reduction in image coding based on minimum block boundary discontinuity." In Visual Communications and Image Processing '95, edited by Lance T. Wu. SPIE, 1995. http://dx.doi.org/10.1117/12.206723.

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Akoumianakis, Demosthenes, George Ktistakis, Giannis Milolidakis, and Konstantinos Michailidis. "Enacted virtual partnerships: Imbrications of representations of boundary artifacts and cloud services." In 2013 Fourth International Conference on Information, Intelligence, Systems and Applications (IISA). IEEE, 2013. http://dx.doi.org/10.1109/iisa.2013.6623696.

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Wang, Jianxin, and En Zhu. "A new method of reducing boundary artifacts for JPEG2000 multi-tile coding." In 2015 IEEE International Conference on Imaging Systems and Techniques (IST). IEEE, 2015. http://dx.doi.org/10.1109/ist.2015.7294570.

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