Papers by Keyword: Color

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Authors: Zi Quan Zhao, Rui Guang Wang
Abstract: The correction methods of LED displays are aiming to address the uniform issues which includes brightness aspect and color aspect. The correction method use a 3×3 correction coefficients matrix to reshape the pulse width of each LED.To calculate the correction coefficients, a linear system is established, which includes a color CCD and a LED display. And a correction algorithm is introduced based on the color CCD. This algorithm describes the relationships of the main color components of a LED, when the gray level of a LED is increasing or decreasing, the three main color components would change according to the correction coefficients. The results shows that the correction based on this algorithm improved the performance of LED displays.
Authors: Jun Ling Liu
Abstract: The color, shape and texture are the basic intrinsic features of visual scene and important features for scene recognition and visual salient feature. The recognition of four targets of “bird”, “ball”, “butterfly” and “flower” under the color image, gray image, edge image and low-pass blurred image was completed in the paper through psychology experiment, and the experimental result showed that the speed to recognize the color image was quickest, it was a little slower to recognize the gray image with the same accuracy of the color image, the edge image had a great impact on the recognition of certain object, thus increasing the recognition time, the blurred image increased the time to recognize various objects while reduced the recognition accuracy. The cognitive research on the scene image’s visual feature is helpful to reveal the secrets of human information processing and explore the law for the formulation of human visual saliency.
Authors: Qiang Liu, Hong Xia Guo, Zi Ming Wang, Peng Yang, Su Ping Cui
Abstract: The color of allphatle sulfonated acetone-formaldehyde resin has been changed by a novel way of mixing with blue and green dye. The UV spectroscopy and colorimeter were used to characterize the color change. And the water reducing performance of the resin was investigated. The results indicated that the ratio of SAF water reducer to blue dye was 10:5, and that to green dye was 10:4, the color of the SAF water reducer can be efficiently changed. The fluidity of cement paste of SAF water reducer added the blue dye was improved, and the water-reducing rate was almost not influenced by addition of dyes.
Authors: Shu Zhang, Jun Li, Yi Jie Liu
Abstract: Most of metallurgy industry enterprises in our country were built early and the architectures of which were old while environment colors miscellaneous. With the rapid development of economy and improvement of aesthetic standard, the art and aesthetic of industry architecture environment was paid the important attention. Color plays a very important role in the environmental cognition aspects. It can not only facilitate people to cognitive surrounding responsible and dangerous working environment, but also to allow workers to improve work efficiency and improve the living comfort level. A good relationship with the color and the industry environment is important to our future industrial landscape design and industrial architecture design. And we should present the building colors with new ways so as to create Chinese industrial culture with Chinese characteristics. Based on the industry architecture environment, this article expounds the importance, emotional and functional of color design, and deeply analysis the effect and influence factors of color design in industry landscape architecture environment, and also brought the requirement to color design.
Authors: Ye Hong Wang, Jian Liu
Abstract: According to the documents and nongovernmental recording, there had been various color names of textiles in Qing dynasty. For example, there were at least 40 colors recorded in the official documents. Process of dyeing got to be good and stable in Qianlong 19th , there were at least 30 different dyeing processes at that time, such as direct dyeing, mordant dyeing, deoxidize dyeing and so on, or something more complicate. The dye stuff included indigo, rhubarb, young fustic, safflower, brazilwood, buds of pagoda tree, Amur cork, cape jasmine, gall, hulls of acorn. Dyeing additives included alum, alkali, prunus mume and almond oil. Rules for blue, red, green dyeing were stricter, while that for yellow and other colors were more flexible.
Authors: Shuai Guo, Hua Wei Li, Chun Sheng Xie, Wen Yi Li
Abstract: The problem being faced is that the current target recognition method based on color feature can’t filter objects that have the same color as the target object. In this paper, a new target recognition algorithm based on the object’s color and size is introduced. To achieve the goal of object recognition, the HSV color space conversion, the threshold method and seed growth method are used together to implement image segmentation. The size feature has been used to filter the image regions that have been extracted by image segmentation. The method is proved by experimentation to be effective in regular shape object recognition.
Authors: J.S. Fabiyi, A.G. McDonald
Abstract: The effect of accelerated weathering on the chemical and color of wood plastic composites (WPC) made from modified pine wood fiber (control, extractives free and holocellulose) was investigated. WPC were produced from the various wood fibers (60%, weight) and high density polyethylene (40%, weight) as matrix were subjected to accelerated weathering in xenon-arc weatherometer for up to 1200 hours. This study aimed at getting a better understanding of the chemical changes that occur to weathered WPC relative to its material compositions (wood and plastic). Chemical analyses and color measurement of the weathered surface using Fourier transform infrared (FTIR) spectroscopy, pyrolysis gas chromatograph mass spectrometry and colorimetery showed that degradation of WPC had occurred, causing color changes. It was observed that WPC made from holocellulose wood fiber had the lowest color change compared to extractives free wood and control wood fiber based WPC.
Authors: Hai Yan Wang, Jian Xin Zhang
Abstract: Dyeing textile’s information management system is the basis of accurate classification of color, machine studying methods have became a popular area of research for application in color classification. Traditional classification methods have high efficiency and are very simple , but they are dependent on the distribution of sample spaces. If the sample data properties are not independent, forecast precision will been affected badly and internal instability will appear. An application of Gray-Relation for dyeing textile color classification has been designed, which offsets the discount in mathematical statistics method for system analysis. It is applicable regardless of variant in sample size, while quantizing structure is in agreement with qualitative analysis. On the basis of theoretical analysis, Dyeing textile color classification was conducted in the conditions of random sampling、 uniform sampling and stratified sampling. The experimental results proofs that by using Gray-Relation, dyeing textile color classification does not need to be dependent on sample space distribution, and increases the stability of classification.
Authors: Ju Yu Zhao
Abstract: This article has carried out research on garment hangtags related with analysis of visual elements targeted for acquisition of incremental sale and concern from customers. Visual elements research on garment hangtags is involved with relevant aesthetic, sociology, psychology as well as marketing. This article has given a general summary on the influence of different visual perception on sale or customer approval brought by modeling, color and script which is the general procedure for garment hangtag design as well as those relevant research.
Authors: Alan de Oliveira Feitosa, José Elson Soares Filho, Leonardo Leandro dos Santos, Romualdo Rodrigues Menezes, Ricardo Peixoto Suassuna Dutra
Abstract: Color is a very important characteristic in ceramic products. In ceramic coatings, the basis of ceramic is normally classified as red or white basis. Another relevant factor for color variation is the processing to which the material is submitted. In this sense, this work aims to analyze and quantify the color of ceramic pieces used as coatings, which were developed from a formulation of masses, using raw materials such as clay, feldspar, kaolin and quartz. Each raw material was analyzed separately and then a standard formulation was made, involving all of them, and these ones were submitted to different processing temperatures. All the samples were quantified regarding the color, by using the tridimensional colorimetric space by CIELAB method. Results point out that each raw material has an own value regarding color and the temperature has contributed directly to the color variation of the ceramic pieces.
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