Colour Contrast in Cartographic Works Using the Principles of Johannes Itten

Bláha, Jan D.; Štěrba, Zbyněk

doi:10.1179/1743277414y.0000000084

Cited by 24 publications

(12 citation statements)

References 14 publications

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“…It is obvious, however, that the same colorization or texture will proportionally increase the level of the distraction. This fact is proven in their research by Wolfe & Horowitz (2004), Connor et al (2004), Rauschenberger & Yantis (2006) or Garlandini & Fabrikant (2009) who further specify that the most important graphic variables attracting our attention are mainly the size, color (brightness and saturation included), orientation, movement (e.g., in dynamic maps), shape or stereoscopic depth (created, for example, by thermal color contrast; see Bláha & Štěrba, 2014). Most of these variables are considered to be features of the cartographic symbol, which means that it is very important to precisely choose morphographic operations when creating a symbol set in order to minimize the possibility of confusing individual symbols, at least among different semantic groups.…”

Section: Locating and Recognizing Objectsmentioning

confidence: 89%

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Selected Issues of Experimental Testing in Cartography

Štěrba¹,

Šašinka²,

Stachoň³

et al. 2015

Self Cite

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Section: Locating and Recognizing Objectsmentioning

confidence: 89%

“…First, we can discuss, for example, evaluation of used colors in the given map, the whole color compositions included. The color might not only influence the readability to some level but also the attractiveness of the whole product and therefore it is necessary to pay attention to it (see Bláha & Štěrba, 2014).…”

Section: Subjectively-based Evaluation Methodsmentioning

confidence: 99%

Selected Issues of Experimental Testing in Cartography

Štěrba¹,

Šašinka²,

Stachoň³

et al. 2015

Self Cite

View full text Add to dashboard Cite

“…For cartographic experts, good sequential color schemes that are harmonious should meet three main requirements. First, sequential color schemes should be harmonious; these harmonious colors produce the pleasing effect that allows map users to prefer the maps. Second, color schemes should be linked with thematic information such that map objects can be identified easily .…”

Section: Methodsmentioning

confidence: 99%

A harmony‐based approach to generating sequential color schemes for maps

Chen

Zhu

et al. 2019

Color Research & Application

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Generating high-quality sequential color schemes for maps is challenging for most mapmakers. This article presents a harmony-based approach for automatically generating sequential color schemes for maps. The proposed approach consists of two steps: (a) color harmony quantification for sequential color schemes on maps and (b) color scheme generation using quantified color harmony factors. The approach was tested using three experimental maps, including the Chinese water body density index map, Chinese vegetation cover index map, and Chinese population density map. Effectiveness was evaluated by comparing color schemes generated by the proposed approach with those created by the probability-based method and ColorBrewer. Twenty-six participants were invited to rate each map color scheme using a 5-point scale. A t test was also used to examine the significance of the difference. The results show that the mean points of color schemes using the proposed approach are higher than those using the probability-based method, and the corresponding Pvalues are far lower than .05, which suggests that the proposed approach is better than the probability-based method and can improve the sequential color scheme quality in automatic ways. The mean points of color schemes created using the proposed approach are also slightly higher than or similar to those of ColorBrewer, which are well-known map color schemes manually designed by an experienced cartographer. This result further suggests that the proposed approach can meet the requirement of automatic generation for high-quality sequential color schemes on maps. K E Y W O R D Scolor harmony, map color, sequential color scheme

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“…The spatial distribution of these areas were also controlled; to simulate various conditions that could occur in map reading, we distributed the two areas over the map: they could be next to each other, at mid-distance on the map, or at two extremes. Spatial distribution of all other colours was randomized to avoid (or distribute) simultaneous contrast effect as much as possible; even though it is important to note that this effect cannot be completely eliminated (Bláha & Štěrba 2014).…”

Section: Methodsmentioning

confidence: 99%

Discriminating classes of sequential and qualitative colour schemes

Brychtová

Çöltekin

2015

International Journal of Cartography

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We present an analysis of the influence of colour distance on the user experience with choropleth and chorochromatic maps. We systematically evaluated five sequential and five qualitative colour schemes in a two-stage user experiment. At first, we conducted an online study to obtain performance metrics accuracy and response time from a large, heterogeneous population. Following this, in a controlled lab study with eye-tracking, we re-examined the findings from the online study for a subset of experimental stimuli and further assessed the user experience through an analysis of their visual behaviour. In this process, along with accuracy and response time, eye-tracking metrics fixation frequency, fixation duration and scanpath speed as well as a gaze transition analysis were utilized. In both experiments, participants were asked to compare two areas with controlled colour distances between them, and decide whether these areas were of the same colour. Results suggest that we are able to discriminate narrower colour distances than commonly used in practice, however, not as narrow as suggested in previous literature. Abstract. We present an analysis of the influence of colour distance on the user experience with choropleth maps. We systematically evaluated 5 sequential and 5 qualitative colour schemes in a two-stage user experiment. At first, we conducted an online study to obtain performance metrics accuracy and response time on a large variety of heterogeneous population. Following this, in a controlled lab study with eye-tracking, we re-examined the findings from the online study for a subset of experimental stimuli and further assessed the user experience through an analysis of their visual behaviour. In this process, along with accuracy and response time, eye tracking metrics fixation frequency, fixation duration and scanpath speed as well as a gaze transition analysis were utilized. In both experiments, participants were asked to compare two areas with controlled colour distances between them, and decide whether these areas are of the same colour. Results suggest that we are able to discriminate narrower colour distances than commonly used in practice, however, not as narrow as suggested in previous literature.

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Colour Contrast in Cartographic Works Using the Principles of Johannes Itten

Cited by 24 publications

References 14 publications

Selected Issues of Experimental Testing in Cartography

Selected Issues of Experimental Testing in Cartography

A harmony‐based approach to generating sequential color schemes for maps

Discriminating classes of sequential and qualitative colour schemes

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