Marcela Pechová

Marcela Pechová
Technical University of Liberec | TUL · Department of Material Engineering

MS

About

10
Publications
2,528
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21
Citations
Citations since 2016
8 Research Items
21 Citations
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2016201720182019202020212022012345
2016201720182019202020212022012345

Publications

Publications (10)
Conference Paper
The human visual system is able to adapt to a wide range of the adaptive luminance levels. However, the chroma was found to be the most affected attribute in the assessments. Several color appearance models have been proposed to describe adaptation mechanisms and predict the color appearance at different luminance levels. A set of 72 color pairs of...
Article
Adaptive camouflage refers to the adaptation of an object, such as a military vehicle or soldier, to its surroundings. Although the use of camouflage by military forces dates back to the First World War, this research will address the development of an adaptive color changeable system based on selected thermochromic inks following the colors used i...
Conference Paper
Full-text available
This field of study was designed to investigate effects of retroreflector size, shape and production technology on conspicuity of nighttime pedestrians. The subject's task was to compare two different almost inverse design of retroreflector with focus on effectiveness two reflective transfer films and screen-printed version of retroreflector made f...
Conference Paper
Full-text available
The applications of color changes in an object can be observed frequently in our daily life. These changes may take place either from colorless to colored or from one color to another. Photochromic textiles have been used in the sensible materials (sensor) in the smart textiles and esthetic materials in the fashion industry due to the color changin...
Conference Paper
Full-text available
9 observers visually assessed the whiteness of 10-selected white textile samples by using pair comparison method. Visual ranking of these samples was computed from 2025 individual judgments. Tristimulus values based on measured total radiance factors of the samples are calculated for the CIE1964 supplementary standard colorimetric observer. Visual...
Conference Paper
Full-text available
High chromatic colours are used largely in various industrial sectors (e.g. textiles, emergency) in last years. Aim of research was observation of influence of decreasing luminance level on assessment of respondents and verification of adaptation mechanisms in mesopic and photopic level human vision. The perception and discrimination of colour affe...
Conference Paper
Full-text available
Nowadays it is a trend to use high chromacitycolours. These colours are using in many applications such as: warning clothes, fashion design and decorative cosmetics. Many companies were focusing on these colours due to high market potential. Therefore, it is important to study these colours and small differences between these colours. In many cases...
Article
Full-text available
Collisions between vehicles and pedestrians are a significant problem, and substantial evidence indicates that the problem is closely linked with low illumination. A less expensive approach to enhancing the conspicuity of pedestrians involves using retroreflective material – material that has been engineered to passively reflect light back in the d...
Conference Paper
Full-text available
This paper deals with the evaluation of color samples on photopic and mesopic luminance levels. With decreasing luminance level there is shifted the spectral sensitivity to shorter wavelengths. The area of this shift is called as mesopic or mesopic vision. Description of change of the spectral sensitivity of the human eye at change of luminance lev...
Conference Paper
Full-text available
The human eye is most sensitive to the wavelength region 555 nm, with decreasing light intensity is shifted the sensitivity of the human eye to shorter wavelengths. Subjective evaluation of observers (Farnsworth-Munsell 100 Hue test and a set of color chips) were performed under seven luminous levels on mesopic and photopic luminance level, which h...

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