Abstract Although the physical effects of air pollution on humans are well documented, there may be even greater impacts emotional state and health. Surveys have traditionally been used to explore impact people’s subjective well-being (SWB). However, survey techniques usually take long periods properly match characteristics from monitoring stations each respondent’s SWB at both disaggregated spatial temporal levels. Here, we data simulate fixed-scene images psychophysical process examine...

The proliferation of low‐cost colour imaging devices in the consumer market has led to a greater need transfer images from one medium or device another without loss fidelity. A common solution is characterise each terms its CIE tristimulus values. In this paper two general techniques, artificial neural networks and polynomial transforms, are compared for their usefulness characterising cameras. techniques shown give approximately similar performance once parameters models optimised. Since...

Abstract The purpose of this study is to test whether consumers' personal colour preferences (in an abstract sense rather than for a particular product) affect their intended product purchase decisions if they are given various choices. This work employs two experiments with visual components investigate which participant would choose asked select when there range colours available. Two were also designed elicit response about each prefers sense). finds that product‐colour but the extent...

This multicenter study aimed to evaluate visual-instrumental agreement of six color measurement devices and optimize three difference equations using a dataset visual differences (∆V) from expert observers.

In this study, two All-Ceramic (AC) materials—Empress 2 (EMP) (Ivoclar Vivadent AG, Schaan, Liechtenstein) and In-Ceram ALUMINA (ICA) (Vita Zahnfabrik, Bad Säckingen, Germany)—were analyzed, along with the effects of 3 luting agents— viz. Zinc Phosphate cement (ZNPO, PhospaCEM PL, Ivoclar Liechtenstein), Glass Ionomer Cement (GIC, Ketac-Cem Radiopaque, ESPE Dental Seefeld, Germany), Compolute (COMP, Germany)—on final color, using CIELab system. Color differences (DeltaL, Deltaa, Deltab,...

We investigate methods for the recovery of reflectance spectra from responses trichromatic camera systems and application these to problem characterization. The colorimetric data is an ill-posed problem, a unique solution requires additional constraints. introduce novel method that finds smoothest spectrum consistent with both linear model reflectance. Four multispectral were tested using real system. new gave lowest maximum error in terms characterization test independent training data....

Abstract It is widely believed that children will choose furniture has the same color as their preferred color. Furthermore, for different categories of furniture, they consistent. A study 508 adolescent Chinese between ages 12 and 16 been carried out to explore whether preference influences choice when are provided with various options (16 chromatic five achromatic colors). This work tested six items in two functional spaces (study bedroom space). Findings indicate children's preferences...

Psychological research has established that the presence of dental anomalies negatively impact social judgements. This study sought to determine effects tooth colour on subjective ratings judgements in a group Caucasian adults.A cross sectional experimental analogue design comprised fifty adults: 25 women and men. A total 54 digitally modified photographs males females (darkened, natural, whitened teeth) were evaluated. All participants evaluated each images 12 characteristics: popularity,...

When we observe the light reflected from surfaces in a scene or look directly at emitted by sources, experience sensation of color. Color is just one attribute complex and not fully understood set properties that define appearance our surroundings. To measure specify color an object, need to take into account nature under which object viewed, spectral reflectance surface, human vision system.In this article CIE system colorimetry briefly reviewed its limitations are described. The...

Abstract Colour is the most widely used attribute in image retrieval and object recognition. A technique known as histogram intersection has been studied considered to be effective for color‐image indexing. The key issue of this algorithm selection an appropriate color space optimal quantization selected space. goal article measure model performance predicting human judgment similarity measurement various images, explore capability with a wide set spaces, find spaces. Six spaces twelve...

Colour preference for lighting is generally influenced by three kinds of contextual factors, the light, object and observer. In this study, a series psychophysical experiments were conducted to investigate compare effect certain factors on colour preference, including spectral power distribution application, observers’ personal regional cultural difference gender difference. LED lights with different correlated temperatures used illuminate wide selection objects. Participant response was...

Abstract Strong associations exist between colours and concepts or words. Understanding these associations, sometimes referred to as colour emotions, is important for effective use of in art design. Traditionally the relationships have been systematically explored experiments where participants scale according bipolar adjectives such warm‐cool. In this article, a method exploring words suggested demonstrated. A psychophysical experiment described select based on The data are used show that...

The hygiene area is one of the most important facilities in a space station. If its environmental lighting appropriately designed, it can significantly reduce psychological pressure on astronauts. This study investigates effect correlated colour temperature (CCT) heart rate, galvanic skin response, emotion and satisfaction Forty subjects participated experiments simulator with controlled environment. conditions included 2700 K, 3300 3600 5000 K 6300 K; physiological responses (heart...