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Journal articles on the topic 'Contour maps'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Skala, Helen. "Contour Maps-A Visual Experience." College Mathematics Journal 22, no. 3 (1991): 241. http://dx.doi.org/10.2307/2686651.

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2

Skala, Helen. "Contour Maps—A Visual Experience." College Mathematics Journal 22, no. 3 (1991): 241–44. http://dx.doi.org/10.1080/07468342.1991.11973391.

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3

Kinnear, Paul R., and Michael Wood. "Memory for topographic contour maps." British Journal of Psychology 78, no. 3 (1987): 395–402. http://dx.doi.org/10.1111/j.2044-8295.1987.tb02257.x.

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4

Cronin, T. "Automated reasoning with contour maps." Computers & Geosciences 21, no. 5 (1995): 609–18. http://dx.doi.org/10.1016/0098-3004(94)00100-9.

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5

Donald, William W. "Geostatistics for Mapping Weeds, with a Canada Thistle (Cirsium arvense) Patch as a Case Study." Weed Science 42, no. 4 (1994): 648–57. http://dx.doi.org/10.1017/s0043174500077092.

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Geostatistical methods were used to describe and map nonrandom distribution and variation (standard deviation) of shoot density and root growth across a well-established patch of Canada thistle, a perennial weed. Semivariogram functions and kriging, an interpolation method, were used to prepare isoarithmic contour maps and associated error maps. Maps consisted of interpolated contours of uniform weed density and other measured or calculated regionalized variables between measured X-Y control points, as well as maps of error (standard deviation) associated with contour estimation. Mapped region

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6

Komel, Neža Ema, Klemen Kozmus Trajkovski, and Dušan Petrovič. "Upgrade of existing algorithms for creating contour lines on topographic maps of the karst surface." Abstracts of the ICA 2 (October 8, 2020): 1–2. http://dx.doi.org/10.5194/ica-abs-2-19-2020.

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Abstract. Today, many software tools enable the production of contour lines from relief models, but the results of modelling complex karst relief are often inadequate. Reasons for this may be limited quality and resolution of relief models, limitations of algorithms for calculating contours, or limitations of algorithms for smoothing and displaying additional symbols that further describe relief, such as slope lines, steep slopes and smaller objects that cannot be effectively displayed with contours, etc.We will present research in the field of improving existing algorithms in rugged karst ter

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7

Min, Guo, and Hong Kun Chen. "A Method of Drawing Contour Basing on Membrane Analogy Method." Advanced Materials Research 919-921 (April 2014): 2119–22. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.2119.

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It is common method that using landform key points and lines of landform to draw contours of large scale relief maps. In this paper ,It is discussed that using lamella analogue to draw contour of large scale relief maps is an another simple utility high effective method.

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8

Bolin, David, and Finn Lindgren. "Quantifying the Uncertainty of Contour Maps." Journal of Computational and Graphical Statistics 26, no. 3 (2017): 513–24. http://dx.doi.org/10.1080/10618600.2016.1228537.

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9

Lanca, Margaret. "Three-Dimensional Representations of Contour Maps." Contemporary Educational Psychology 23, no. 1 (1998): 22–41. http://dx.doi.org/10.1006/ceps.1998.0955.

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10

Polfeldt, Thomas. "On the quality of contour maps." Environmetrics 10, no. 6 (1999): 785–90. http://dx.doi.org/10.1002/(sici)1099-095x(199911/12)10:6<785::aid-env399>3.0.co;2-7.

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11

Hanari, Kubad Zeki. "Transformation of Contour Maps to Digital terrain Model (DTM)." Journal of Zankoy Sulaimani - Part A 3, no. 1 (2000): 93–111. http://dx.doi.org/10.17656/jzs.10056.

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12

Shalaby, Abouzeid M. "Isomorphic Hilbert spaces associated with different complex contours of the $\mathcal{PT}$-symmetric (-x4) theory." International Journal of Modern Physics A 29, no. 11n12 (2014): 1450059. http://dx.doi.org/10.1142/s0217751x14500596.

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In this work, we stress the existence of isomorphisms which map complex contours from the upper half to contours in the lower half of the complex plane. The metric operator is found to depend on the chosen contour but the maps connecting different contours are norm-preserving. To elucidate these features, we parametrized the contour [Formula: see text] considered in Phys. Rev. D 73, 085002 (2006) for the study of wrong sign x4 theory. For the parametrized contour of the form [Formula: see text], we found that there exists an equivalent Hermitian Hamiltonian provided that a2c is taken to be rea

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13

WILSON, G. "PHOTOGRAMMETRIC DETERMINATION OF TERRAIN SLOPE USING SIMPLE EQUIPMENT." Canadian Journal of Soil Science 65, no. 1 (1985): 123–31. http://dx.doi.org/10.4141/cjss85-013.

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Slope is an important factor in terrain mapping and can be determined from contour maps or aerial photographs. Previously methods have been proposed to reduce the time element using contour maps. This paper describes and demonstrates a technique whereby aerial photographs can be used effectively when photogrammetric equipment and reliable contour maps are not available. Accuracy with the method is illustrated by comparison to slope determined from a contour map and a single computation sheet is provided for inclusion in a handbook or field guide. Key words: Slope measurement, terrain analysis,

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14

Carter, Glenda, Michelle Cook, John C. Park, Eric N. Wiebe, and Susan M. Butler. "Middle Grade Students' Interpretations of Contour Maps." School Science and Mathematics 108, no. 2 (2008): 71–79. http://dx.doi.org/10.1111/j.1949-8594.2008.tb17806.x.

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15

Hayashi, Hisashi, Masaki Kawata, Rumi Takeda, et al. "Selective XANES spectroscopy from RIXS contour maps." Journal of Physics and Chemistry of Solids 66, no. 12 (2005): 2168–72. http://dx.doi.org/10.1016/j.jpcs.2005.09.052.

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16

Xu, Bin, Jianping Chen, and Meijuan Yao. "Identification of Contour Lines from Average-Quality Scanned Topographic Maps." Mathematical Problems in Engineering 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/3089690.

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Contour line is the main linear feature on topographic maps. Extraction of contour lines is tedious and time-consuming process, but is still an interesting problem. This paper presents a novel method for extracting contour lines from average-quality scanned topographic maps. First, it uses spatial fuzzyc-means algorithm (sFCM) to solve color aliasing and false color problems by taking into consideration both color and spatial information of topographic maps during color segmentation. In order to improve the categorizing rate, upper and lower cut-sets are introduced into sFCM. Second, to deal w

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17

Urzhumtsev, Alexandre, Pavel V. Afonine, Vladimir Y. Lunin, Thomas C. Terwilliger, and Paul D. Adams. "Metrics for comparison of crystallographic maps." Acta Crystallographica Section D Biological Crystallography 70, no. 10 (2014): 2593–606. http://dx.doi.org/10.1107/s1399004714016289.

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Numerical comparison of crystallographic contour maps is used extensively in structure solution and model refinement, analysis and validation. However, traditional metrics such as the map correlation coefficient (map CC, real-space CC or RSCC) sometimes contradict the results of visual assessment of the corresponding maps. This article explains such apparent contradictions and suggests new metrics and tools to compare crystallographic contour maps. The key to the new methods is rank scaling of the Fourier syntheses. The new metrics are complementary to the usual map CC and can be more helpful

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18

Touya, Guillaume, Hugo Boulze, Anouk Schleich, and Hervé Quinquenel. "Contour Lines Generation in Karstic Plateaus for Topographic Maps." Proceedings of the ICA 2 (July 10, 2019): 1–8. http://dx.doi.org/10.5194/ica-proc-2-133-2019.

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<p><strong>Abstract.</strong> Contour lines are a key features of topographic maps as they make the comprehension of terrain more easy. But they are no longer drawn by cartographers, they are mostly automatically derived from digital terrain models. Despite real progress in this automated derivation, some specific terrain landscapes remain incorrectly depicted with such techniques, and this is the case for karstic plateaus full of sinkholes. This paper proposes a specific automated method to derive better contour lines in plateaus, particularly around sinkholes. The process f

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19

Yang Chen, Runsheng Wang, and Jing Qian. "Extracting contour lines from common-conditioned topographic maps." IEEE Transactions on Geoscience and Remote Sensing 44, no. 4 (2006): 1048–57. http://dx.doi.org/10.1109/tgrs.2005.861478.

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20

Ishak, S. "Exploring Textural Characteristics of Spatiotemporal Traffic Contour Maps." Journal of Transportation Engineering 130, no. 1 (2004): 122–31. http://dx.doi.org/10.1061/(asce)0733-947x(2004)130:1(122).

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21

Oka, Shriram, Akash Garg, and Koshy Varghese. "Vectorization of contour lines from scanned topographic maps." Automation in Construction 22 (March 2012): 192–202. http://dx.doi.org/10.1016/j.autcon.2011.06.017.

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22

Meng, Xiaoqiao, Thyaga Nandagopal, Li Li, and Songwu Lu. "Contour maps: Monitoring and diagnosis in sensor networks." Computer Networks 50, no. 15 (2006): 2820–38. http://dx.doi.org/10.1016/j.comnet.2005.09.038.

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23

Gilhooly, Kenneth J., Michael Wood, Paul R. Kinnear, and Caroline Green. "Skill in Map Reading and Memory for Maps." Quarterly Journal of Experimental Psychology Section A 40, no. 1 (1988): 87–107. http://dx.doi.org/10.1080/14640748808402284.

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Studies of expertise have typically shown that experts have better memory for materials from their fields than do novices. However, previous research on memory for maps has not shown the expected effect of expertise. The present study differed from previous studies by using contour maps as well as planimetric maps. In Experiment 1 the expected superiority in memory performance was found for skilled map readers when contour maps were used, but not when planimetric maps were used. In Experiment 2, the main results of Experiment 1 were replicated, and, in addition, process tracing data were obtai

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24

Ye, Andre, Quan Ze Chen, and Amy Zhang. "Confidence Contours: Uncertainty-Aware Annotation for Medical Semantic Segmentation." Proceedings of the AAAI Conference on Human Computation and Crowdsourcing 11, no. 1 (2023): 186–97. http://dx.doi.org/10.1609/hcomp.v11i1.27559.

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Medical image segmentation modeling is a high-stakes task where understanding of uncertainty is crucial for addressing visual ambiguity. Prior work has developed segmentation models utilizing probabilistic or generative mechanisms to infer uncertainty from labels where annotators draw a singular boundary. However, as these annotations cannot represent an individual annotator's uncertainty, models trained on them produce uncertainty maps that are difficult to interpret. We propose a novel segmentation representation, Confidence Contours, which uses high- and low-confidence ``contours’’ to captu

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25

Gafurova, L. A., I. Yu Savin, and G. T. Djalilova. "Updating of soil map of mountaneous regions of Uzbekistan." Dokuchaev Soil Bulletin, no. 118 (March 25, 2024): 21–47. http://dx.doi.org/10.19047/0136-1694-2024-118-21-47.

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: One of the latest updates on the soil cover of the mountain regions of Uzbekistan is contained in the “Atlas of the Soil Cover of the Republic of Uzbekistan”, published in 2010. It contains soil maps of the regions of the country at the scales of 1 : 350 000 to 1 : 2 500 000 and provides brief charateristics of the soils. The Atlas was compiled on the basis of traditional methods of soil mapping. As a result, its contour part is typical of maps of the mentioned scales and rather schematic. The aim of the research was to update the contour part of the soil maps of mountain territories of Uzbe

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26

Hutchison, Mark A., and Christine M. Koepferl. "Contour Analysis Tool: An Interactive Tool for Background and Morphology Analysis." Astrophysical Journal 975, no. 1 (2024): 27. http://dx.doi.org/10.3847/1538-4357/ad779f.

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Abstract We introduce the Contour Analysis Tool (CAT), a Python toolkit aimed at identifying and analyzing structural elements in density maps. CAT employs various contouring techniques, including the lowest-closed contour, linear and logarithmic Otsu thresholding, and average gradient thresholding. These contours can aid in foreground and background segmentation, providing natural limits for both, as well as edge detection and structure identification. Additionally, CAT provides image processing methods such as smoothing, background removal, and image masking. The toolkit features an interact

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27

DAKOWICZ, MACIEJ, and CHRISTOPHER GOLD. "EXTRACTING MEANINGFUL SLOPES FROM TERRAIN CONTOURS." International Journal of Computational Geometry & Applications 13, no. 04 (2003): 339–57. http://dx.doi.org/10.1142/s0218195903001220.

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Good quality terrain models are becoming more and more important, as applications such as runoff modelling are being developed that demand better surface orientation information than is available from traditional interpolation techniques. A consequence is that poor-quality elevation grids must be massaged before they provide useable runoff models. Rather than using direct data acquisition, this project concentrated on using available contour data because, despite modern techniques, contour maps are still the most available form of elevation information. Recent work on the automatic reconstruct

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28

ZHONG, Jingjing, Siwei LUO, and Jiao WANG. "Contour Grouping and Object-Based Attention with Saliency Maps." IEICE Transactions on Information and Systems E92-D, no. 12 (2009): 2531–34. http://dx.doi.org/10.1587/transinf.e92.d.2531.

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29

Thwaites, Robin N. "Comments on “Contour-lined Photobase Maps for Soil Mapping”." Soil Science Society of America Journal 49, no. 6 (1985): 1592–93. http://dx.doi.org/10.2136/sssaj1985.03615995004900060055x.

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30

Soto-Ocampo, César Ricardo, Juan David Cano-Moreno, José Manuel Mera, and Joaquín Maroto. "Bearing Severity Fault Evaluation Using Contour Maps—Case Study." Applied Sciences 11, no. 14 (2021): 6452. http://dx.doi.org/10.3390/app11146452.

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Increasing industrial competitiveness has led to an increased global interest in condition monitoring. In this sector, rotating machinery plays an important role, where the bearing is one of the most critical components. Many vibration-based signal treatments are already being used to identify features associated with bearing faults. The information embedded in such features are employed in the construction of health indicators, which allow for evaluation of the current operating status of the machine. In this work, the use of contour maps to represent the diagnosis map of a bearing, used as a

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31

DONG, Xian-jun, Hong CHEN, Xiao-an TANG, and Hai-ying ZHANG. "Contour lines extraction from color scanned military topographical maps." Journal of Computer Applications 29, no. 8 (2009): 2109–11. http://dx.doi.org/10.3724/sp.j.1087.2009.02109.

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32

Maia, M. A. G. M., and A. L. F. Xavier. "A semiautomatic method for assigning elevation in contour maps." IEEE Transactions on Knowledge and Data Engineering 8, no. 4 (1996): 596–603. http://dx.doi.org/10.1109/69.536252.

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33

Shiffman, S., G. D. Rubin, and S. Napel. "Medical image segmentation using analysis of isolable-contour maps." IEEE Transactions on Medical Imaging 19, no. 11 (2000): 1064–74. http://dx.doi.org/10.1109/42.896782.

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34

Andereck, Barbara S. "Using contour maps to teach electric field and potential." Physics Teacher 28, no. 7 (1990): 499–500. http://dx.doi.org/10.1119/1.2343126.

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35

Carter, William H. "On unwrapping two-dimensional phase data in contour maps." Optics Communications 94, no. 1-3 (1992): 1–7. http://dx.doi.org/10.1016/0030-4018(92)90395-8.

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36

Greco, G., E. Novellino, M. Pellecchia, C. Silipo, and A. Vittoria. "Effects of variable sampling on COMFA coefficient contour maps." Journal of Molecular Graphics 12, no. 1 (1994): 67–68. http://dx.doi.org/10.1016/0263-7855(94)80045-6.

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37

Pinho, A. J. "Adaptive context-based arithmetic coding of arbitrary contour maps." IEEE Signal Processing Letters 8, no. 1 (2001): 4–6. http://dx.doi.org/10.1109/97.889634.

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38

Li, Zhilin, and Haigang Sui. "An Integrated Technique for Automated Generalization of Contour Maps." Cartographic Journal 37, no. 1 (2000): 29–37. http://dx.doi.org/10.1179/caj.2000.37.1.29.

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39

González-Platas, Javier, Cristina González-Silgo, and Catalina Ruiz-Pérez. "VALMAP2.0: contour maps using the bond-valence-sum method." Journal of Applied Crystallography 32, no. 2 (1999): 341–44. http://dx.doi.org/10.1107/s0021889898010279.

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VALMAP2.0 is a Microsoft-Windows-based program designed to assist material scientists in accurate structural investigations. The aim ofVALMAPis to calculate the sum of bond valences that a particular atom would have if it were placed at any arbitrary point in the crystal. By movement of this atom through all possible points, its valence-sum contour map can be displayed. Parameters of the bond-valence model are available and may be modified. The program was tested in a number of cases and two examples of applications are reported: (i) finding probable atom sites in crystal structures; (ii) disp

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40

Lowden, Bruce. "A Storage Efficient Method For Producing Smooth Contour Maps." INFOR: Information Systems and Operational Research 23, no. 4 (1985): 447–68. http://dx.doi.org/10.1080/03155986.1985.11731979.

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41

Ali, Amal Mahdi. "Making Different Topographic Maps with the Surfer Software Package." Engineering, Technology & Applied Science Research 14, no. 1 (2024): 12556–60. http://dx.doi.org/10.48084/etasr.6525.

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The main objective of this study is to describe the preparation of topographic maps using the Surfer software. A total of 159 regularly distributed Ground Control Points (GCPs) were collected with the use of the Differential Global Positioning System (DGPS). Seven methods (Contour Map, Post Map, 3D Surface Map, 3D Wireframe Maps, Grid Vector-1 Map, Color Relief Map, and Shaded Relief Maps) at the Surfer environment were used to prepare the topographic maps at the Mukhtar Village near the Al-Fallujah City. Contour lines with other features were superimposed on the DEM layer, which refers to the

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42

Liao, Cheng, Han Hu, Haifeng Li, et al. "Joint Learning of Contour and Structure for Boundary-Preserved Building Extraction." Remote Sensing 13, no. 6 (2021): 1049. http://dx.doi.org/10.3390/rs13061049.

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Most of the existing approaches to the extraction of buildings from high-resolution orthoimages consider the problem as semantic segmentation, which extracts a pixel-wise mask for buildings and trains end-to-end with manually labeled building maps. However, as buildings are highly structured, such a strategy suffers several problems, such as blurred boundaries and the adhesion to close objects. To alleviate the above problems, we proposed a new strategy that also considers the contours of the buildings. Both the contours and structures of the buildings are jointly learned in the same network.

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43

Li, He, Ye Li, Zhi Yuan Geng, and Li Juan Wang. "Identification of Rotor System Noise Source Based on Sound Intensity Measurement." Advanced Materials Research 479-481 (February 2012): 1169–73. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.1169.

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In this paper, the noise of the rotor system is classified at first, and then the sound intensity experiment of the rotor system is conducted based on “two-microphone” method. Then the sound intensity contour maps were obtained from the measurement results. An investigation towards the relationship between the characteristics of contour maps and distributions of the rotor system on space was taken; the main noise sources of the engine were identified. The result provides guidelines for taking measures to reduce noise.

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44

Abdelsamea, Mohammed M., Giorgio Gnecco, Mohamed Medhat Gaber, and Eyad Elyan. "On the Relationship between Variational Level Set-Based and SOM-Based Active Contours." Computational Intelligence and Neuroscience 2015 (2015): 1–19. http://dx.doi.org/10.1155/2015/109029.

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Most Active Contour Models (ACMs) deal with the image segmentation problem as a functional optimization problem, as they work on dividing an image into several regions by optimizing a suitable functional. Among ACMs, variational level set methods have been used to build an active contour with the aim of modeling arbitrarily complex shapes. Moreover, they can handle also topological changes of the contours. Self-Organizing Maps (SOMs) have attracted the attention of many computer vision scientists, particularly in modeling an active contour based on the idea of utilizing the prototypes (weights

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45

Hua, Zhen, Zhenzhu Bian, and Jinjiang Li. "Airport Detection-Based Cosaliency on Remote Sensing Images." Mathematical Problems in Engineering 2021 (May 7, 2021): 1–17. http://dx.doi.org/10.1155/2021/8956396.

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This paper proposes a contour extraction model based on cosaliency detection for remote sensing image airport detection and improves the traditional line segmentation detection (LSD) algorithm to make it more suitable for the goal of this paper. Our model consists of two parts, a cosaliency detection module and a contour extraction module. In the first part, the cosaliency detection module mainly uses the network framework of Visual Geometry Group-19 (VGG-19) to obtain the result maps of the interimage comparison and the intraimage consistency, and then the two result maps are multiplied pixel

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46

Pratiwi, Henny, Isnandar Isnandar, and Muhammad Aris Ichwanto Ichwanto. "Media Pembelajaran Miniatur Peta Kontur 3D bagi Siswa SMK Teknik Geospasial." Briliant: Jurnal Riset dan Konseptual 9, no. 2 (2024): 352–59. http://dx.doi.org/10.28926/briliant.v9i2.1712.

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The geospatial engineering skills program is a program that focuses on understanding surveying and mapping techniques. At SMK Negeri 1 Singosari in Cartography lessons for class X, learning uses conventional media and 2D printed maps, so efforts are needed to encourage active participation of students. This research aims to develop fun learning media for class X Geospatial Engineering students at SMK Negeri 1 Singosari. The research model applied in developing 3D contour map learning media is Research and Development. The research and development model is carried out using the ADDIE model. The

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47

Fiev, Konstantiv, Aleksandr Shashurin, Marina Butorina, and Nickolay Ivanov. "CALCULATION OF THE NOISE CONTOURS OF A CIVIL AVIATION AIRPORT." VOLUME 39, VOLUME 39 (2021): 33. http://dx.doi.org/10.36336/akustika20213933.

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Major issues and statistical data of the noise impact created by air transport, namely civil aviation aircraft, are analyzed. The main methods of reducing aircraft noise are considered. One of the methods of noise control and mitigation near the airports, namely ‘noise contour calculations’, is proposed for consideration. The description of the calculation method used and the calculation of the noise contours of the civil aviation airport are given. The civil aviation airport of one of the largest cities in Russia was chosen as a subject of research. As a result, maps of noise contours around

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48

Դուրգարյան, Է․ Ռ․. "ՍՅՈՒՆԻՔԻ ՄԱՐԶԻ ՌԵԼԻԵՖԻ ՁԵՎԱՉԱՓԱԿԱՆ ՎԵՐԼՈՒԾՈՒԹՅՈՒՆԸ". Proceedings of the YSU C: Geological and Geographical Sciences 41, № 3 (214) (2007): 140–45. http://dx.doi.org/10.46991/pysu:c/2007.41.3.140.

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On the basis of large-scale maps there has been done an attempt to analyze morphometric indicators of Zangezur contour (hypsometry, exposition of slopes, density and depth of surface breaking-up). It is proved, that not only litologic composition of rocks, but also tectonic movements of the contour, influence on the amount of morphometric indicators. The study of morphometric indicators of Zangezur contour is of great importance for planning and designing of engineering structures.

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49

Yuan, Xue, Jianming Lu, and Takashi Yahagi. "A Method of 3D Face Recognition Based on Contour Maps." IEEJ Transactions on Electronics, Information and Systems 125, no. 3 (2005): 426–34. http://dx.doi.org/10.1541/ieejeiss.125.426.

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50

Caccioli, Fabio, Imre Kondor, and Gábor Papp. "Portfolio optimization under Expected Shortfall: contour maps of estimation error." Quantitative Finance 18, no. 8 (2017): 1295–313. http://dx.doi.org/10.1080/14697688.2017.1390245.

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