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Proceedings of the Conference CIE 2021最新文献

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SPECTRAL MEASUREMENT AND CLASSIFICATION IN THE ERA OF BIG DATA 大数据时代的光谱测量与分类
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op15
F. Webler, Mads Andersen
{"title":"SPECTRAL MEASUREMENT AND CLASSIFICATION IN THE ERA OF BIG DATA","authors":"F. Webler, Mads Andersen","doi":"10.25039/x48.2021.op15","DOIUrl":"https://doi.org/10.25039/x48.2021.op15","url":null,"abstract":"The measurement and classification of light is essential across many scientific disciplines. Devices used to measure light range from the highly precise scanning spectroradiometers to the more practical compact multichannel filter-array type imaging sensors and the ubiquitous RGB pixel. While there have been numerous successful efforts to reconstruct spectrum from RGB, RGB-to-spectrum reconstruction has historically been limited to natural scenes and other edge cases under strict constraints. However, information theory and recent advances in deep learning have shed new light on the vast amount of redundancy contained within data collected in the natural world, including light. In this paper, we will investigate how analytic methods can help map high dimensional spectra data to a low-dimensional feature space with minimal inductive bias. Through a better understanding of the intrinsic dimension of the data, we can use the features expressed in this representation to exploit regularities and make tasks like data compression, measurement and classification more efficient. The aim of this analysis is to help inform how and when low-dimensional representation of spectra is useful in practice for designing compact sensors as well as for lossy data compression and robust classification.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128130719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
REFERENCE WHITE IN A COMPLEX VIRTUAL REALITY ENVIRONMENT 参考白在复杂的虚拟现实环境
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op47
C. Wu, L. Ou
{"title":"REFERENCE WHITE IN A COMPLEX VIRTUAL REALITY ENVIRONMENT","authors":"C. Wu, L. Ou","doi":"10.25039/x48.2021.op47","DOIUrl":"https://doi.org/10.25039/x48.2021.op47","url":null,"abstract":"This study aims to investigate what a reference white really means in a complex scene setting in a virtual environment, specifically whether a reference white is determined by the brightest white object in the entire environment, or is it determined by the brightest white object in the field of view. To achieve the aim, three psychophysical experiments were conducted, one situated in a real room and the other two in virtual reality. Experimental results show that colour appearance in VR is comparable to colour appearance in a real space. Regarding reference white, the brightest white object is not necessarily regarded as the reference white especially when it is located far away from the test colour. The brightest white object needs to be located within the viewing field for the test colour in order to be regarded as the reference white.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134045203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SCALING OF SENSATIONS DURING THE PERFORMANCE OF VISUAL TASKS IN RELATION TO HUMAN CENTRIC LIGHTING 视觉任务执行过程中与人类中心照明相关的感觉缩放
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po49
G. Boos, V. Budak, Ekaterina Ilyina, T. Meshkova
{"title":"SCALING OF SENSATIONS DURING THE PERFORMANCE OF VISUAL TASKS IN RELATION TO HUMAN CENTRIC LIGHTING","authors":"G. Boos, V. Budak, Ekaterina Ilyina, T. Meshkova","doi":"10.25039/x48.2021.po49","DOIUrl":"https://doi.org/10.25039/x48.2021.po49","url":null,"abstract":"Currently, programs for lighting calculation based on computer graphics (CG) allows us to move to a fundamentally new approach to a assessing the quality of lighting. A designing based on illuminance can be complement with designing based on synthetic images or on lighting design. Modern CG programs can calculate the spatial-angular distribution of luminance (SADL). However, to make the assessment of the quality of lighting using SADL a new criterion is needed. This paper considers constructing a physiological model of the visual perception scale based on experimental data and on neural network for simple scene as light source viewed on a uniform background with different luminance levels. Scale based on threshold contrasts of luminance for each sensation can be a fundament of new criterion. The article offers the method of construction the map for each sensation using the example of «discomfort» and «unpleasant» maps that can easily applied in programs.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133979532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ILLUMINANCE DISTRIBUTION MEASUREMENT OF MUSEUM EXHIBITS USING DIGITAL IMAGING LUMINANCE METER 利用数字成像亮度计测量博物馆展品的照度分布
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po17
A. Bartsev, A. Bartseva
{"title":"ILLUMINANCE DISTRIBUTION MEASUREMENT OF MUSEUM EXHIBITS USING DIGITAL IMAGING LUMINANCE METER","authors":"A. Bartsev, A. Bartseva","doi":"10.25039/x48.2021.po17","DOIUrl":"https://doi.org/10.25039/x48.2021.po17","url":null,"abstract":"The method for estimating the illuminance distribution in the vertical plane of museum objects (paintings) using a digital imaging luminance meters (ILMD) is considered. In order to pass from the luminance distribution to the illuminance distribution, a screen with reflective properties close to diffuse (Lambert) reflection is used. The theoretical and experimental uncertainty estimation of the measurement method done.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133680773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
GENERAL V(λ) MISMATCH INDEX - HISTORY, CURRENT STATE, NEW IDEAS 一般v (λ)失配指标-历史、现状、新思路
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.wp03
U. Krüger, A. Ferrero, A. Thorseth, V. Mantela, A. Sperling
{"title":"GENERAL V(λ) MISMATCH INDEX - HISTORY, CURRENT STATE, NEW IDEAS","authors":"U. Krüger, A. Ferrero, A. Thorseth, V. Mantela, A. Sperling","doi":"10.25039/x48.2021.wp03","DOIUrl":"https://doi.org/10.25039/x48.2021.wp03","url":null,"abstract":"The general V(λ) mismatch index, f_1^' quantifies the mismatch between the spectral responsivity of a photometer, s(λ), and the spectral luminous efficiency function, V(λ). A short review of its historical development is given to explain the reasons for the current definition and which adjustments may be useful for the future. The properties of the current definition are described in detail. \u0000It is very likely that in the future, calibration of photometers will be done with a white LED light source as reference. It might involve the need for a more adequate definition of the general V(λ) mismatch index, either by using a different normalization in f_1^' for the spectral responsivity of the photometer or by introducing a different type of function for assessing the mismatch. On the other hand, the measurement of coloured LEDs is also becoming increasingly important. Is a single quality index for white and coloured light sources sufficient?","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131835301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
AN OVERVIEW OF IMPORTANT FACTORS TO CONSIDER WHEN CALIBRATING LEDS IN PHOTOMETRY WITH DIFFERENT DETECTORS 在不同检测器的光度测量中校准led时要考虑的重要因素概述
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op13
T. Gerloff, L. Ulm, P. Sperfeld, A. Sperling
{"title":"AN OVERVIEW OF IMPORTANT FACTORS TO CONSIDER WHEN CALIBRATING LEDS IN PHOTOMETRY WITH DIFFERENT DETECTORS","authors":"T. Gerloff, L. Ulm, P. Sperfeld, A. Sperling","doi":"10.25039/x48.2021.op13","DOIUrl":"https://doi.org/10.25039/x48.2021.op13","url":null,"abstract":"LED-based lighting products are the fastest developing light sources on the general lighting market. These include not only white light sources, but also coloured light sources. SI-traceable calibrations with a low measurement uncertainty are challenging because their unique spectral and geometric properties must be taken into account. The requirements on the measuring equipment and resulting uncertainty contributions differ significantly from those for the calibration of conventional incandescent or fluorescent light sources. \u0000Furthermore, different detector types can be used when calibrating LEDs. These include classic photometers, radiometers, spectroradiometers but also imaging systems such as ILMDs. Each of these measuring devices has its specific advantages and disadvantages.\u0000In this paper, traceable calibrations on 9 coloured and 9 white LEDs are discussed. Various array spectroradiometers, photometers, radiometers and a double monochromator were used for this purpose. Each of these measuring instruments is discussed in terms of its suitability for measuring different physical quantities (e.g. array spectrometer for measuring illuminance).","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115121979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
QUANTIFICATION OF THE EFFECT OF LIGHTING ENVIRONMENT ON SPACIOUSNESS OF INTERIOR SPACE 照明环境对室内空间空间感影响的量化
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op48
H. Miyake, M. Okada, T. Yamamoto, H. Yamaguchi, N. Yoshizawa
{"title":"QUANTIFICATION OF THE EFFECT OF LIGHTING ENVIRONMENT ON SPACIOUSNESS OF INTERIOR SPACE","authors":"H. Miyake, M. Okada, T. Yamamoto, H. Yamaguchi, N. Yoshizawa","doi":"10.25039/x48.2021.op48","DOIUrl":"https://doi.org/10.25039/x48.2021.op48","url":null,"abstract":"Spaciousness is an important quality of space which is affected by both the volume of space and the lighting environment. This study’s aim is to create the calculation model to quantify the effect of lighting environment on spaciousness. 3D luminance mapping, which is the combined data of luminance of surface and its distance to the observer, is used for the analysis of lighting environment, because we hypothesized that the three-dimensional localization of light affects the spaciousness. From the result of a subjective experiment to evaluate spaciousness with different lighting environment, it is revealed that spaciousness can be quantified from average luminance and “Dark-part-reduced visible volume” which is the reduced visible volume according to the distribution of dark pixels in the 3D luminance mapping. We also compared average illuminance of whole image and of ceiling, walls, floor, and concluded that the whole average illuminance best describes the effect.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117281820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
OPTIMISATION OF A MOBILE METHOD FOR MEASURING ROAD LIGHTING CHARACTERISTICS (LUMINANCE AND ILLUMINANCE) 用于测量道路照明特性(亮度和照度)的移动方法的优化
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po34
A. Chernyak, M.A. Fedorishchev, A. B. Kuznetsova
{"title":"OPTIMISATION OF A MOBILE METHOD FOR MEASURING ROAD LIGHTING CHARACTERISTICS (LUMINANCE AND ILLUMINANCE)","authors":"A. Chernyak, M.A. Fedorishchev, A. B. Kuznetsova","doi":"10.25039/x48.2021.po34","DOIUrl":"https://doi.org/10.25039/x48.2021.po34","url":null,"abstract":"In today's urban environment it is extremely difficult to perform road lighting measurements using standard stationary methods. The mobile measurement method remains, in fact, the only possible way of assessing the quality of outdoor lighting. The presented work is aimed at improving the existing measurement methods in terms of quality, speed of measurement and safety of personnel.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"23 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123681781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A NEUROPHYSIOLOGY-BASED MODEL TO ESTIMATE VISIBILITY IN ACTUAL LIGHTING ENVIRONMENT 基于神经生理学的实际照明环境能见度估计模型
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.op49
N. Yoshizawa, H. Shida
{"title":"A NEUROPHYSIOLOGY-BASED MODEL TO ESTIMATE VISIBILITY IN ACTUAL LIGHTING ENVIRONMENT","authors":"N. Yoshizawa, H. Shida","doi":"10.25039/x48.2021.op49","DOIUrl":"https://doi.org/10.25039/x48.2021.op49","url":null,"abstract":"Visibility is one of the fundamental factors for explaining the lighting environment, and various quantitative indexes for these have been made in such a manner that directly finds the formulae that best match the numerous subjective evaluations. Recently neurophysiology-based models have been paid attention as the complementary or alternative methods to these conventional indexes. In this paper we will introduce the normalization and gain control models, which are generally accepted theories in the visual information processing, to estimate the visibility, and verify the validity of this algorithm by comparing with the subjective evaluation in the experimental room. The result showed that the algorithm in this research could estimate the visibility of the simple objects in the experimental space with a pseudo window with great accuracy, however, it is desirable and necessary to publicly discuss various algorithms and clarify their reliability based on the verification results under various situations.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"290 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125886392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
THE LIGHT OF AMAZON ARCHITECT SEVERIANO MÁRIO PORTO 亚马逊建筑师severiano mÁrio波尔图之光
Proceedings of the Conference CIE 2021 Pub Date : 2021-12-06 DOI: 10.25039/x48.2021.po46
Ayana Dantas de Medeiros, Cláudia Naves David Amorim
{"title":"THE LIGHT OF AMAZON ARCHITECT SEVERIANO MÁRIO PORTO","authors":"Ayana Dantas de Medeiros, Cláudia Naves David Amorim","doi":"10.25039/x48.2021.po46","DOIUrl":"https://doi.org/10.25039/x48.2021.po46","url":null,"abstract":"The use of passive techniques in architecture is welcome. A renowned Brazilian architect, Severiano Mário Porto, developed over 200 projects and became an icon of Brazilian modernism, specifically in the Amazon, working with this prerogative. This work aims to combine the analysis of the lighting quality in Severiano's projects, corroborating the recognized fame of the \"Architect of the Amazon\". The research procedures adopted were: documentary survey, selection of case studies, application of a monitoring protocol with photometric analysis and user consultation, and daylight computer simulation. In terms of daylighting, when applied the monitoring protocol on the current state of the building, the lighting values are not satisfactory according to Brazilian standards. As the view outside, the results showed medium and high quality. The questionnaires point to high levels of satisfaction. The computer simulations show the daylighting potential of the original design. There is clear evidence that the actual condition wastes the potential of the original design in terms of daylight use.","PeriodicalId":363368,"journal":{"name":"Proceedings of the Conference CIE 2021","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130781211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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