Today's information and communication technologies are constantly improving and changing with each passing day. The transmission and expression of color are more emphasised on perfection and true color reproduction, which is WYSIWYG. To achieve this goal, you must have an ideal color visual pattern that is completely consistent with human perception.
The ideal color vision mode includes the correct human eye color function, an accurate color difference formula and a color adaptation mode, and an ideal color appearance mode.
The ideal color vision mode is the basis for the qualitative and quantitative application of various colors.
Human efforts in color science and technology have made great achievements. For example, the British Commission on Illumination (CIE) has successively issued the human eye to color function (2° and 10°), CIExyY color system, CIEL*U*V*, and CIEL*a*b* uniform color space, etc., and becomes CIE. The most important content and results of colorimetry. CIE colorimetry has also become the basis for the development of color science research in the world today. In addition, there have been great contributions and achievements in color detection, computer color matching, computer color separation, and color transmission technologies. However, in the research and development process of the goal of pursuing the ideal color vision mode, there are still many areas to be studied and improved in the aspect of color detection application technology. In particular, color variability and color constancy often cause great problems both in industrial applications and in the colors of life and art.
In application, color variation often causes great troubles in the color quality management for color-related industries (such as printing, ink, etc.), and even results in rejection and compensation. Therefore, the evaluation of color variability is an important part of color detection technology.
In terms of color variability color detection technology, it can be divided into qualitative method and quantitative method. The commonly used qualitative method is (a) visual inspection method: By using multi-light source standard color lamps, the color or color difference of the color sample pair is observed under different standard light sources. (2) Reflectance curve method: According to the number of intersection points of the object's color reflectivity curve (for transparent objects according to its transmittance curve) to determine the color variability, the more the intersection points, the smaller the color variability. However, there are at least three intersection points, that is, the greater the color variability of the color change pair, the more the intersection of the reflectance curve will be concentrated on the three intersection points. For the quantitative method, CIEL*a*b* (CIEL*u*v* for color light sources), CMC (l:c), CIE94, and BFD (l:c) color-difference equations are commonly used for object colors. Calculate the color difference of the color sample under different light sources to evaluate the color variability of the color sample pair. In addition, for lighting, the CIE color rendering index can be used to assess the color rendering of an illumination or artificial light source.
Color constancy can also be called homochromatic or color constancy. Its relative characteristic is non-chromatic constant, that is, different colors and the same spectrum. Both color constancy and color variability are two sides of one body that can easily be confusing. The simple distinction is: color constant is for a single color stimulus, and color variability is two color stimulus. In other words, if a certain color stimulus has the same color appearance under a certain reference light source and under other light sources, the color stimulus is said to have a color constancy. In everyday life, everyone with a normal color vision has the same experience, that is, most natural objects have a constant color appearance in different natural light. This phenomenon is color constant. However, due to the advancement of human scientific and technological civilization, there are a wide variety of artificial pigments or inks and light sources or illuminations, which greatly increase the inconstantness of object colors in daily life and the surrounding environment. Therefore, how to effectively manage color applications has become an important issue.
Author (Sheng Wen)
When purchasing floor mats, we should first make clear our own needs. Generally speaking, for indoor floor mats, the main material can be acrylic, cotton and microfiber. If you choose a floor mat for the bathroom, the main reason is that it absorbs water. Therefore, cotton or microfiber floor mats should be selected, especially microfiber materials. People step on it directly after taking a bath, which not only absorbs water quickly, but also feels very comfortable.
Our floor mat product back adhesive selection of natural latex coating, non-toxic, odorless, no deformation, no sticky, no mildew.
Chenille Bath Mat,Microfiber Bath Mat,Microfiber Non Slip Shower Mat,Strong Water Absorption Floor Mat
NINGBO JENNY IMPORT & EXPORT CO.,LTD , https://www.jennyclothing.com