Background lighting clutters: how do they affect visual saliency of urban objects?

Davoudian, N

doi:10.1080/21650349.2016.1182073

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…Salah satu cara yang digunakan untuk menetralkan efek meningkatnya kompleksitas di latar lingkungan pelingkup adalah dengan meningkatkan nilai luminasi cahaya (Carlson et al, 2017;Paulmier et al, 2001). Davoudian juga beranggapan ketika nilai kontras luminasi bertambah, nilai conspicuity juga akan meningkat seiring dengan bertambahnya jarak antara target dan pencahayaan di background pelingkup (Davoudian, 2017).…”

Section: B Riset Pendahuluunclassified

Traffic Signs Conspicuity in Urban Environment: A Case of London

Sunjoto

2022

idealog

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The conspicuity of traf ic signs is crucial, as their purpose is to give drivers with direction and information. The ef ectiveness and ef iciency of a traf ic sign is determined by its visibility, legibility, and veracity of information for observers. This study recruited primarily postgraduate students as participants. The assessment was conducted as part of a controlled experiment. Method used in this research is a controlled indoor experiment using a visual search task in which a random order of daytime and nighttime scenes are given within 200 milliseconds. Subjects were instructed to identify any visible signs at the scene. Four variables, including the size/distance of signs, the complexity of the background, the luminance contrast, and the color dif erence, were utilized. The results reveal that the size of the sign influences its conspicuity. Sign conspicuity is likewise af ected by luminance contrast, however it may have a greater ef ect at night. The results may also show that the impact of color dif erence between daylight and nighttime conditions is minimal. In as much as a portion of the parameter's value is based on visual evaluation, and the findings do not appear to have reached a statistically significant level, additional methodological refinement is required. Keyword: conspicuity, traf ic sign, complexity, urban are

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Section: B Riset Pendahuluunclassified

Traffic Signs Conspicuity in Urban Environment: A Case of London

Sunjoto

2022

idealog

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“…This can influence our feeling of safety. Contrasts in lighting levels can be between a lit object and the lit background [18] or contrast between two lit urban zones in the urban space [10]. If contrasts in lighting levels are balanced and the general urban lighting level is dimmed, it becomes possible for the lighting designer to add subtle layers of lighting, planned in a lighting hierarchy according to context-specific spatial and social qualities in the specific urban space which is being lit.…”

Section: Introductionmentioning

confidence: 99%

Darker Cities due to the Energy Crisis and the need for context-specific urban lighting

Hvass

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Outdoor lighting has been dimmed or turned off in European municipalities due to the energy crisis. Dimming of outdoor lighting levels led to energy savings, advantages for biodiversity and less light pollution. But the dimming also triggers the basic human assumption that bright light is connected to safety and darkness is connected to fear. To discuss this basic assumption, human experience of dimmed lighting and perceived safety is explored through three case studies. One study explores human experiences of dimmed street lighting during energy crises, the second study investigates dimmed lighting levels around public transportation, and the third study is an example of a context-specific adaptation of street lighting in a residential area. The case studies reveal that dimmed lighting levels, minimized contrasts, and context-specific lighting can lead to an increased connectedness to the spatial and social urban context and an increased feeling of perceived safety. Thus, more light doesn’t always lead to more perceived safety. With a dimmed general lighting level, it is possible to introduce additional subtle lighting layers, structured in a lighting hierarchy to further enhance spatial and social qualities in outdoor contexts in the dark hours. in constructing both.

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“…In the search for literature related to the concept of balanced brightness levels, only a few scientifi c papers were found. Inspiration was found in research about the perception of a lit object in relation to a lit background (Davoudian, 2017) and the eff ect of spatial luminance distribution on dark adaptation (Stokkermans, 2016). Through studies of architectural references, the importance of darkness, atmosphere and the aesthetics of lighting inspired the research design as a counterweight to the primary focus on safety in outdoor lighting research (Lam, 2015;Pallaasma, 2014;Zumpthor, 2006).…”

Section: Methods and Theoriesmentioning

confidence: 99%

Balanced Brightness Levels: Exploring human sensory experience of lighting and darkness in urban public contexts

Hvass¹

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Background lighting clutters: how do they affect visual saliency of urban objects?

Cited by 4 publications

References 30 publications

Traffic Signs Conspicuity in Urban Environment: A Case of London

Traffic Signs Conspicuity in Urban Environment: A Case of London

Darker Cities due to the Energy Crisis and the need for context-specific urban lighting

Balanced Brightness Levels: Exploring human sensory experience of lighting and darkness in urban public contexts

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