This research delves into the development of the Urban Color Plan for Ledro Valley, in Italy. Urban color, encompassing both natural and built elements, plays a crucial role in spatial perception, impacting an individual's cognitive and sensory experiences. This study aims to address the complexity of color planning by an operational method grounded in scientific research. Through the analysis of existing color plans and the study of this specific case, the paper proposes a methodology which emphasizes scientific scrutiny by encompassing factors like historical context, social aspects, environmental influences and a chromatic and material facade survey. The research outlines the multifaceted scales of intervention, ranging from urban mapping to material quality considerations. The Ledro Valley case study exemplifies the application of this methodology, revealing the challenge in harmonizing the diverse historical-political realities of this Valley. The results showcase a flexible color plan that unifies the territory while still preserving the distinct identities of individual previous municipalities, demonstrating the plan's adaptability and potential for enhancing the overall urban environment.
Digitizing motion picture films is a crucial aspect of archival practices. Nevertheless, the primary purpose of this process is to convert analog film into a digital signal suitable for recording back onto film. Thus, the most popular color film system encoding, such as Cineon or Academy Density Exchange (ADX), may present some limits for the preservation and restoration practices. In this paper, Cineon and ADX systems are summarized and analyzed, and an experimental application conducted on modern cinematographic film scanners has been made to evaluate the integration of these encoding systems into these devices. Results have been examined and discussed to underline the constraints and possibilities of these color encoding systems for archival purposes.
The performance of color matching functions (CMFs) is important to color specification and calibration. In comparison to the great number of studies focusing on the effect of primary set, few studies focused on how observer age and field of view (FOV) jointly affected the performance of CMFs. In this study, a color matching experiment with three different primary sets, which were carefully selected based on our previous study, was carried out by two observer age groups under four FOVs (i.e., 2°, 4°, 8°, and 13°). The results suggested that the observer age had a more significant effect than the FOV, and the change of the FOV did not introduce a systematic trend to the color matching results. Neither the CIE 1931 2° nor 1964 10° CMFs were found to accurately characterize the color matches. The CIE 2006 CMFs with the FOV set to the experiment setup also did not have good performance. On average, the CIE 2006 2° CMFs were found to have the best performance, without considering the effects of the observer age and FOV.
Our previous work revealed that the vision-based color representation of congenitally color-deficient observers (CDOs) was mostly C-shaped bending at yellow and blue that differed from circular shape of the observers with no color vision deficiencies called CNOs in the study. In this study, the color-name-based internal color representation was investigated for the same observers and its relation to the vision-based color representation was examined. First, psychological difference of all combinations of 10 color names corresponding to the Munsell basic hues was rated using a 5-point scale. The distances of all pairs of CNOs and the CDOs agreed well with each other, in contrast to the distinctive differences in the vision-based color representation. Second, color-naming was conducted to the 10 color chips for each of high and medium chroma to link the vision-based and color-name-based representations through the test stimuli. For the high chroma chips, color naming property of the CDOs was similar to that of the CNOs. In contrast, CDOs showed distinctively larger intra- and inter-observer variabilities than CNOs for the medium chroma chips. The difference between two color chips was estimated using the results of the color naming and extended color-name difference ratings which is called “color-naming difference.” No systematic relationship was observed among the color-chip difference, color-name difference, and color naming difference in individual comparisons. It indicated that the color-naming difference is greater for the pairs including YR/Y/GY versus G/B, and vice versa for the pairs consisting of BG, B, PB, P, and RP. These suggest the followings; first, CDOs seem to utilize lightness difference strategically in the visual assessment, second, psychological differences among “blue,” “green,” “purple,” or “gray” are distinct for CDOs although the color chips given those names in our experiment appear close.