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17th International Conference on Man-Machine-Environment System Engineering (MMESE)

作者： Xiong, Duanqin He, Qing Guo, Xiaochao Liu, Yanan Liu, Qingfeng Yao, Qin Du, Jian Bai, Yu Wang, Yanyan Inst Aviat Med PLAAF Beijing 100142 Peoples R China

ISBN: (纸本)9789811062322;9789811062315

Objective To study the color coding requirements of displayed information in see-through displays during aeromarine fight. Methods One hundred and fifteen fighter pilots participated in the experiment. In virtue of color coding experimental procedure for see-through displays information in fighters, pilots selected colors for the display elements in the route and combat flight menu. Results (1) The pilots' color coding requirements of flight course menu were that green was the main color, longtime displayed and normal information was inclined to be green, dangerous and overrun information was inclined to be red, and latent dangerous and needing pilots' attention information was inclined to be yellow. (2) The pilots' color coding requirements of combat menu were that green was the main color, longtime displayed and attackable information was inclined to be green, and unattackable and overrun information was inclined to be red. Conclusions The pilots' color coding requirements for see-through displays in aeromarine flight were that green was the main color;longtime displayed and normal and attackable information was inclined to be green;dangerous, overrun, and unattackable information was inclined to be red;latent dangerous and needing pilots' attention information was inclined to be yellow. Above conclusions were only primary, and subjective and objective researches should be conducted later, so as to deeply verify the rationality of pilots' requirements.

关键词： color coding See-through display Aeromarine flight Pilots Human factor

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Enhancing the effectiveness of flood road gauges with color coding

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NATURAL HAZARDS 2017年第1期88卷 55-70页

作者： Jing, Fang Yang, Li-Zhuang Peng, Ya-Li Wang, Ying Zhang, Xiaochu Zhang, Da-Ren Univ Sci & Technol China CAS Key Lab Brain Funct & Dis Huangshan Rd 443 Hefei 230027 Anhui Peoples R China Univ Sci & Technol China Sch Life Sci Huangshan Rd 443 Hefei 230027 Anhui Peoples R China Univ Sci & Technol China Sch Human & Social Sci Hefei Anhui Peoples R China Chinese Acad Sci Hefei Sci Ctr Ctr Med Phys & Technol Hefei Anhui Peoples R China

Recent years have witnessed many drowning tragedies on roads, even where flood gauges were equipped to warn drivers about the depth of the flood water. The effectiveness of traditional flood gauges using the digit representation has been questioned. According to the attention-knowledge-compliance three-stage model, we propose that color coding can improve the effect of flood gauges. The present study compared the performance of a prototypical color flood gauge with two types of digit flood gauges in four experiments. Our results revealed a general advantage of color flood gauges over digit flood gauges in all testing conditions (with or without reflection and dynamic or static observation), which was manifested in both a sample of people lacking driving experience and a sample of experienced drivers. Specifically, the mean accuracy of color gauge conditions in the four experiments increased by at least 16%, and the mean response time to the color gauge was shortened by at least 0.8 s compared with the digit gauge. The substantial benefit of color gauges over digit gauges suggests that color coding can be used to improve the effectiveness of flood gauges on flood-prone roads. Because of its low cost, the color coding flood gauge may be useful in the developing world to warn against extreme rainfall.

关键词： Flood gauge Flooded road Warning sign Traffic safety color coding

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The research on multi-projection correction based on color coding grid array

The research on multi-projection correction based on color c...

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Annual Conference of the Chinese-Society-for-Optical-Engineering (CSOE) on Applied Optics and Photonics China (AOPC) - Optical Storage and Display Technology

作者： Yang Fan Han Cheng Bai Baoxing Zhang Chao Zhao Yunxiu Changchun Univ Sci & Technol Sch Comp Sci & Technol 7186 Weixing Rd Changchun 130000 Jilin Peoples R China

ISBN: (数字)9781510614000

ISBN: (纸本)9781510614000;9781510613997

There are many disadvantages such as lower timeliness, greater manual intervention in multi-channel projection system, in order to solve the above problems, this paper proposes a multi-projector correction technology based on color coding grid array. Firstly, a color structured light stripe is generated by using the De Bruijn sequences, then meshing the feature information of the color structured light stripe image. We put the meshing colored grid intersection as the center of the circle, and build a white solid circle as the feature sample set of projected images. It makes the constructed feature sample set not only has the perceptual localization, but also has good noise immunity. Secondly, we establish the sub-pixel geometric mapping relationship between the projection screen and the individual projectors by using the structure of light encoding and decoding based on the color array, and the geometrical mapping relation is used to solve the homography matrix of each projector. Lastly the brightness inconsistency of the multi-channel projection overlap area is seriously interfered, it leads to the corrected image doesn't fit well with the observer's visual needs, and we obtain the projection display image of visual consistency by using the luminance fusion correction algorithm. The experimental results show that this method not only effectively solved the problem of distortion of multi-projection screen and the issue of luminance interference in overlapping region, but also improved the calibration efficient of multi-channel projective system and reduced the maintenance cost of intelligent multi-projection system.

关键词： Computer vision color coding de bruijn multi-projector geometric correction luminance fusion

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A New Algorithm For CBIR Using Bi-Cubic Interpolation with color coding and Different Level of DWT 2

A New Algorithm For CBIR Using Bi-Cubic Interpolation with C...

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2nd International Conference on Computing, Communication, Control and Automation (ICCUBEA)

作者： Dixit, Nityanand Tiwari, Sandeep Kumar Sharma, Pankaj Dept CSE IT Gwalior MP India VITM Dept CSE IT Gwalior MP India

ISBN: (纸本)9781509032914

In this study, a new algorithm for Content Based Image Retrieval (CBIR) using bi-cubic interpolation (BCI) with color coding (CC) and different level of discrete wavelet transform (DWT). In this paper the techniques of CBIR are discussed, analyzed and compared. BCI is used to scale the query image and database images. CC is used for color feature extraction. Apply DWT on each level plane of an image for texture feature. Apply edge histogram (EH) on each plane of an image for shape features. The experimental database performed on Corel database which contain fruit, flowers, sports, tools, facial images. Apply Support vector matching (SVM) for classifying the data. The performance analysis of precision (P), execution time (T) for retrieved images. We calculate similarity distance on Euclidean distance (ED), Relative Deviation (RSD), CityBlock (CD) and Canberra distance.

关键词： CBIR DWT SVM color coding Bicubie Interpolation Precision Recall etc

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Bstj 45: 4. April 1966: Increasing the Memory Capacity of the Digital Light Deflector by "color coding". (Skinner, J.G.)

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2016年

Bstj 45: 4. April 1966: Increasing the Memory Capacity of the Digital Light Deflector by "color coding". (Skinner, J.G.) by published by

关键词： "color (skinner, april bandwidth beam bell system capacity coding color color coding deflector digital digital light light light beam light deflector light leakage memory memory plane optical optical switch optical switches system technical transmission

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Analysis and Compensation for Lateral Chromatic Aberration in a color coding Structured Light 3D Measurement System

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SENSORS 2016年第9期16卷 1426-1426页

作者： Huang, Junhui Xue, Qi Wang, Zhao Gao, Jianmin Xi An Jiao Tong Univ Sch Mech Engn Xian 710049 Peoples R China Xi An Jiao Tong Univ State Key Lab Mfg Syst Engn Xian 710049 Peoples R China

While color-coding methods have improved the measuring efficiency of a structured light three-dimensional (3D) measurement system, they decreased the measuring accuracy significantly due to lateral chromatic aberration (LCA). In this study, the LCA in a structured light measurement system is analyzed, and a method is proposed to compensate the error caused by the LCA. Firstly, based on the projective transformation, a 3D error map of LCA is constructed in the projector images by using a flat board and comparing the image coordinates of red, green and blue circles with the coordinates of white circles at preselected sample points within the measurement volume. The 3D map consists of the errors, which are the equivalent errors caused by LCA of the camera and projector. Then in measurements, error values of LCA are calculated and compensated to correct the projector image coordinates through the 3D error map and a tri-linear interpolation method. Eventually, 3D coordinates with higher accuracy are re-calculated according to the compensated image coordinates. The effectiveness of the proposed method is verified in the following experiments.

关键词： three-dimensional sensing color coding chromatic aberration compensation

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Defining Requirements for color-coding Text Software in Teaching of Arabic 11

Defining Requirements for Color-Coding Text Software in Teac...

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11th International Conference on Digital Information Management (ICDIM)

作者： Al-Khalifa, Hend S. Muhaureq, Muna A. King Saud Univ Dept Informat Technol Coll Comp & Informat Sci Riyadh Saudi Arabia Aden Univ Fac Languages English Language Dept Aden Yemen

ISBN: (纸本)9781509026418

Founding proper reading and comprehension abilities of the Arabic written text is of great significance for learners of the language since this is a means for extracting the linguistic and cultural knowledge. This process is complex in Arabic since the script is interwoven and multiple segments can be fused to create a single word which in return complicates identifying word units for new learners and accordingly delays proper acquisition. Proper acquisition is defined here as the ability to fluently read the text as well as manage to decode word parts formed by the agglutination of affixes. This paper introduces the requirements for software that simplifies instruction on word decoding and comprehension through utilizing color-coding on Arabic text.

关键词： Language Learning color coding Arabic Text

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Estimating simplet counts via sampling

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VLDB JOURNAL 2025年第2期34卷 1-26页

作者： Kim, Hyunju Moon, Heechan Bu, Fanchen Ko, Jihoon Shin, Kijung Korea Adv Inst Sci & Technol Kim Jaechul Grad Sch AI Seoul 02455 South Korea Korea Adv Inst Sci & Technol Sch Elect Engn Daejeon 34141 South Korea

Simplicial complexes are higher-order combinatorial structures which have been used to represent real-world complex systems. In this paper, we focus on the local patterns in simplicial complexes called simplets, a generalization of graphlets. We study the problem of counting simplets of a given size in a given simplicial complex. For this problem, we extend a sampling algorithm based on color coding, from graphs to simplicial complexes, with essential technical novelty. We theoretically analyze our proposed algorithm named SC3, showing its correctness, unbiasedness, convergence, and time/space complexity. Through extensive experiments on sixteen real-world datasets, we show the superiority of SC3 in terms of accuracy, speed, and scalability, compared to the baseline methods. We use the counts given by SC3 for simplicial complex analysis, especially for characterization, which is further used for simplicial complex clustering, where SC3 shows a strong ability of characterization with domain-based similarity. Additionally, we explore a variant of simplet counting (specifically, estimating the relative counts of simplets) under realistic scenarios where the entire simplicial complex is not provided at once but can only be partially accessed, for instance, through a limited number of API calls. For such scenarios, we propose a random-walk-based sampling algorithm, SCRW, and analyze its theoretical properties. In our experiments, SCRW requires, on average, 16.5x\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$16.5\times $$\end{document} less memory than SC3, while the speed-accuracy trade-offs provided by the two methods are comparable.

关键词： Simplicial complex Simplet Counting algorithm color coding Random walk

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Why we should have a universal air quality index?

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ENVIRONMENT INTERNATIONAL 2024年 187卷 108698页

作者： Ravindra, Khaiwal Singh, Vikas Mor, Suman Post Grad Inst Med Educ & Res PGIMER Dept Community Med Chandigarh 160012 India Post Grad Inst Med Educ & Res PGIMER Sch Publ Hlth Chandigarh 160012 India Natl Atmospher Res Lab Gadanki 517502 India Panjab Univ Dept Environm Studies Chandigarh 160014 India

Air pollution is known to be one of the major risk factors for premature morbidity and mortality globally, which are preventable. Therefore, the public is informed about air pollution through the Air Quality Index (AQI). The AQI represents integrated data of selected pollutants and produces a combined overall index for specific locations and time. The AQI algorithm generates a range of numbers and categories of colors that indicate likely health risks from air pollutants and the public's actions to minimize the risks. However, it lacks emerging evidence on chemical toxicity or composition. Hence, policymakers may also consider addinga toxicity matrix of fine particles to refine the algorithm, such as oxidative potential. Further, the risk is commonly communicated in numbers and not in color as dictated by the AQI. The AQI values and categories vary significantly between countries for the same pollution concentration, leading to confusion. Hence, we recommend developing a universal AQI (UAQI) with a consistent relationship between colors, concentrations, and toxicity to communicate air pollution risks to the public. Further, communication media should be encouraged to use universal color-coding rather than AQI values, i.e., numbers. Therefore, a global policy framework for regulatory authorities and policymakers is needed to communicate air pollution risk information consistently and to minimize public health exposure.

关键词： Universal AQI color coding Risk information Citizen science Influence of media

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The Complexity of Finding Fair Many-to-One Matchings

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ACM TRANSACTIONS ON ALGORITHMS 2024年第2期20卷 1-37页

作者： Boehmer, Niclas Koana, Tomohiro Tech Univ Berlin Str 17 Juni 135 D-10623 Berlin Germany

We analyze the (parameterized) computational complexity of "fair" variants of bipartite many-to-one matching, where each vertex from the "left" side is matched to exactly one vertex and each vertex from the "right" side may be matched to multiple vertices. We want to find a "fair" matching, in which each vertex from the right side is matched to a "fair" set of vertices. Assuming that each vertex from the left side has one color modeling its "attribute", we study two fairness criteria. For instance, in one of them, we deem a vertex set fair if for any two colors, the difference between the numbers of their occurrences does not exceed a given threshold. Fairness is, for instance, relevant when finding many-to-one matchings between students and colleges, voters and constituencies, and applicants and firms. Here colors may model sociodemographic attributes, party memberships, and qualifications, respectively. We show that finding a fair many-to-one matching is NP-hard even for three colors and maximum degree five. Our main contribution is the design of fixed-parameter tractable algorithms with respect to the number of vertices on the right side. Our algorithms make use of a variety of techniques including color coding. At the core lie integer linear programs encoding Hall like conditions. We establish the correctness of our integer programs, based on Frank's separation theorem [Frank, Discrete Math. 1982]. We further obtain complete complexity dichotomies regarding the number of colors and the maximum degree of each side.

关键词： Graph theory polynomial-time algorithms NP-hardness FPT ILP color coding submodular and supermodular functions algorithmic fairness

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