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26th Session of the CIE

作者： Shi Junsheng Yu Hongfei Yang Weiping School of Physics & Electronic Information Yunnan Normal University Kunming 650092 China

＜正＞In this paper,color reproduction between CRT displays with different white points in dark entironment using three transforms of color appearance of CIECAM02 and CIELAB,and direct matching of tristimulate values was experimentally *** reproduction performances of three model predictions were compared by theoretical calculation and visual evaluation. Theoretical calculation was for the magnitudes of color difference between original display color and reproduction of the twenty-four color patches of Macbeth colorChecker in different color formulae CIEDE2000 and ones in color spaces of CIELAB and *** results showed that:（1）average color difference of reproduction was 0.46,6.72 and 11.07 in unit of CIECAM02 color difference respectively using three model predictions,which was consistent with one of visual evaluation;（2）color difference formula in CIECAM02 color space had better performance than CIELAB color space and CIEDE2000 for evaluating color difference between different viewing entironments;（3）compared with color difference of the transform of color appearance,one of display characterization was smaller,only 0.90 in unit of CIEDE2000,but display characterization for colors with low luminance is a key in color reproduction between displays.

关键词： color reproduction CIECAM02 CIELAB CRT display Display characterization

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color Prediction Model of Gray Hybrid Multifilament Fabric

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Journal of Shanghai Jiaotong university(Science) 2023年第6期28卷 802-808页

作者：王玉娟李文刚刘建勇陈广学汪军 College of Textiles Donghua UniversityShanghai 200240China College of Materials Science and Engineering Donghua UniversityShanghai 200240China School of Textiles Science and Engineering Tiangong UniversityTianjin 300387China State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhou 510640China

To facilitate the product design of hybrid multifilament fabric prior to spinning,a color prediction model was *** monofilaments in the multifilament were assumed to have a square cross-section and stacked *** prediction model considered the refectance,transmittance and arrangement of the monofilaments in the *** test the reflectance and transmittance of the monoflament with the Datacolor spectrophotometer,films with the same material and thickness as the monofilaments were *** kinds of multifilaments with different blending ratios and fineness were produced and woven into *** color difference between the fabric color tested by the spectrophotometer and predicted by the new model and classical Kubelka-Munk(K-M)theory was calculated and *** result shows that the average color difference obtained by the new model was 1.02 color Measurement Committee(CMC)(2:1)units,which was less than that of 1.78 CMC(2:1)units obtained by the K-M *** Spearman correlation analysis,the fabric lightness and the multifilament fineness had a significant infuence on calculated color difference,and the color difference decreased with increases of ***,the surface color of a fabric was reproduced,indicating the model can be used to characterize the phenomenon of uneven color mixing on the fabric surface.

关键词： textile multifilament reflectance prediction model color reproduction multilayer film

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Recent Progresses in Analysis of Tongue Manifestation for Traditional Chinese Medicine

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Chinese Journal of Biomedical Engineering(English Edition) 2005年第2期14卷 55-64页

作者： WEI Bao-guo CAI Yi-heng ZHANG Xin-feng SHEN Lan-sun Signal ＆ Information Processing Lab. Beijing University of Technology Beiiing 100022China 不详

Tongue diagnosis is one of the most precious and widely used diagnostic methods in Traditional Chinese Medicine (TCM). However, due to its subjective, qualitative and experience-dependent nature, the studies on tongue characterization have been widely emphasized. This paper surveys recent progresses in analysis of tongue manifestation. These new developments include the cross-network and cross-media color reproduction of tongue image, the automatic segmentation of tongue body based on knowledge, the automatic analysis of curdiness and griminess for the tongue fur and the automatic analysis of plumpness, wryness and dot -thorn of tongue body. The clinic experiments verify the validity of these new methods.

关键词： Characterization of tongue diagnosis color reproduction Tonguesegmentation Analysis of curdjness and griminess Analysis of shape

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A Four-color Matching Method Combining Neural Networks with Genetic Algorithm

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High Technology Letters 2003年第4期9卷 39-43页

作者：苏小红 Wang Yadong ZHANG Tianwen School of Computer Science and Technology Harbin Institute of Technology Harbin 150001 P.R.China

A brief review of color matching technology and its application of printing RGB images by CMY or CMYK ink jet printers is presented, followed by an explanation to the conventional approaches that are commonly used in color matching. Then, a four color matching method combining neural network with genetic algorithm is proposed. The initial weights and thresholds of the BP neural network for RGB to CMY color conversion are optimized by the new genetic algorithm based on evolutionarily stable strategy. The fourth component K is generated by using GCR (Gray Component Replacement) concept. Simulation experiments show that it is well behaved in both accuracy and generalization performance.

关键词： color matching color reproduction back propagation (BP) neural networks genetic algorithm

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