Complexity-based matching between image resolution and map scale for multiscale image-map generation

Pan, Qian; Li, Zhilin; Liu, Wanzeng

doi:10.1080/13658816.2021.1885674

Cited by 6 publications

(3 citation statements)

References 54 publications

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“…If the relationship is provided before the map generalization, then it can be used to determine the extent of generalization of the original contour to produce the desired scale contour. Vector contours are transformed into raster contour maps for the calculation of the similarity between the maps given that the complexity of linear features at different scales can be reflected in maps (Peng et al, 2021). An optimized vector‐to‐raster algorithm is utilized to minimize errors (Liao et al, 2012).…”

Section: Methodsmentioning

confidence: 99%

Method for continuous multiscale representation of terrain contours using T‐spline technique

Qian

Yang

Zuo

et al. 2022

Transactions in GIS

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Contours are the main graphical element for characterizing three‐dimensional terrain on a topographic map. Continuous multiscale representation of contours is crucial to meet users' needs for detailed information between fixed‐scale contours. Wherein shape of the contour should ideally progressively change as the scale continuously changes. However, the lack of a bridge between scale and shape deformation degrees is an obstacle in obtaining continuous multiscale contours. A novel method for continuous multiscale representation of contour based on T‐spline (CMRTS) is proposed. Multiscale contours are generated through interpolation of the T‐spline and constraint of the relationship between scale and shape similarity. First, a T‐spline surface is established using two fixed‐scale contours. Second, the T‐spline surface intersects a set of horizontal planes with gradual heights to generate intersecting lines. Finally, the quantitative relationship between the scale and shape similarity is determined to align each intersecting line with the corresponding scale and achieve continuous multiscale contours. A case study in Chongqing, China implements and evaluates the proposed method. Results indicate that shape changes of contours generated by CMRTS are more natural and progressive than those by two typical methods. Our method shows high potential and practicability for mapping continuous multiscale contours for real‐world terrain applications.

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Section: Methodsmentioning

confidence: 99%

Method for continuous multiscale representation of terrain contours using T‐spline technique

Qian

Yang

Zuo

et al. 2022

Transactions in GIS

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“…Though cartography and cartographic systems were at the center of this category, it is interesting that the cartographic definition of scale (i.e., representative fraction) was not. Rather, there were examples where geographic scale (e.g., Deng and Wilson 2008;Hoover et al 2019) and observation scale (e.g., Du et al 2010a, b;van Oosterom and Meijers 2014) were used, as well as examples where the cartographic definition was employed (e.g., Stoter et al 2011;Chen and Zhou 2013;Peng et al 2021). In one case, the scale definition was not explicit despite the research focusing on multiscale data (Sinha and Silavisesrith 2012).…”

Section: A Typology Of How 'Scale' Is Used In Practicementioning

confidence: 99%

A scoping review on the multiplicity of scale in spatial analysis

et al. 2022

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Scale is a central concept in the geographical sciences and is an intrinsic property of many spatial systems. It also serves as an essential thread in the fabric of many other physical and social sciences, which has contributed to the use of different terminology for similar manifestations of what we refer to as ‘scale’, leading to a surprising amount of diversity around this fundamental concept and its various ‘multiscale’ extensions. To address this, we review common abstractions about spatial scale and how they are employed in quantitative research. We also explore areas where the conceptualizations of multiple spatial scales can be differentiated. This is achieved by first bridging terminology and concepts, and then conducting a scoping review of the topic. A typology for spatial scale is discussed that can be used to categorize its multifarious meanings and measures. This typology is then used to distinguish what we term ‘process scale,’ from other types of spatial scale and to highlight current trends in uncovering aspects of process scale. We end with suggestions on how to further build knowledge regarding spatial processes through the lens of spatial scale.

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“…It will inform urban analytics and thus help to understand cities by modeling essential underlying components. It can contribute to the realization of hybrid representations, based on images and maps, well informed and therefore effective (Peng et al, 2021). It will also contribute to the measurement of walkability of built environments beyond D-variables (Yin, 2017).…”

Section: Automatic Determination Of Street Intersection Shapementioning

confidence: 99%

Coupled use of isovists and wavelets for street intersection pattern determination

Leduc

2022

Environment and Planning B: Urban Analytics and City Science

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The city is a complex “object” whose structure can be studied at several levels of scale. In this article, we propose to work on the scale of the street, the one in which the pedestrian is immersed, and more precisely on the scale of its articulations, the street intersections. These are indeed structuring places, variously walkable, potentially difficult to cross, which a methodical description can facilitate the use. To this end, we operate, in each intersection, a matching between the shape of the open space as captured by the pedestrian in immersion (this visual pattern is more commonly called the isovist) and a corpus of geospatial patterns. This matching exploits a wavelet compression technique from signal processing which also has the advantage of evaluating the orientation of the pattern. The different urban fabrics presented during the comparative analysis highlight the versatility of the method but also its scalability.

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Complexity-based matching between image resolution and map scale for multiscale image-map generation

Cited by 6 publications

References 54 publications

Method for continuous multiscale representation of terrain contours using T‐spline technique

Method for continuous multiscale representation of terrain contours using T‐spline technique

A scoping review on the multiplicity of scale in spatial analysis

Coupled use of isovists and wavelets for street intersection pattern determination

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