• Title/Summary/Keyword: object material

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3D Depth Measurement System based on Parameter Calibration of the Mu1ti-Sensors (실거리 파라미터 교정식 복합센서 기반 3차원 거리측정 시스템)

  • Kim, Jong-Man;Kim, Won-Sop;Hwang, Jong-Sun;Kim, Yeong-Min
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2006.05a
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    • pp.125-129
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    • 2006
  • The analysis of the depth measurement system with multi-sensors (laser, camera, mirror) has been done and the parameter calibration technique has been proposed. In the proposed depth measurement system, the laser beam is reflected to the object by the rotating mirror and again the position of the laser beam is observed through the same mirror by the camera. The depth of the object pointed by the laser beam is computed depending on the pixel position on the CCD. There involved several number of internal and external parameters such as inter-pixel distance, focal length, position and orientation of the system components in the depth measurement error. In this paper, it is shown through the error sensitivity analysis of the parameters that the most important parameters in the sense of error sources are the angle of the laser beam and the inter pixel distance.

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A Critical Study about the Correlation between the Body without Organ and Blurring Boundary Fashion - Focusing on Philosophical and Sociological Discourses about the Body and the Desire - (기관 없는 신체와 탈영토화 된 패션 사이의 상관관계에 대한 비판적 고찰 - 철학적, 사회학적 신체 담론과 욕망이론을 중심으로 -)

  • Yang, Hee-Young;Lee, Myung-Hee
    • The Research Journal of the Costume Culture
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    • v.18 no.5
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    • pp.824-841
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    • 2010
  • In 21st century, subordinated relationship of fashion from the body has been disappearing, and fashion is understood as variable and creative field. This research aims at analysis about the relationship between the body and fashion depending on the theories about the authority and the desire. So, this utilizes between theoretical study and empirical analysis. For concentrated study, research period limits from 2000 to the present time 2010. Contemporary body and fashion have being changed into various forms and values, become complex and de-territory. Especially, body is symbol of ambivalence eroticism that gives point to sexual property, and the object of fetishism and machine having a desire. This study's purpose draw a parallel with between the limits of contemporary body that couldn't be rid of the capital and desire, and the liberty of fashion that escape from the body's influence has being changed independent and fluid space. This research's results are as follow as; contemporary de-territory fashion is expressed as 1) symbol of the object and physical material property, 2) self-transcendental instrument fashion, 3) independent spatial molding, 4) de-centering fashion.

A Study on Expression Characteristics of Light in Interior Space based on Perception and Cognition (지각과 인지를 바탕으로 한 실내공간의 빛 표현특성에 관한 연구)

  • Oh, Seung-Nam;Kim, Jong-Jin
    • Korean Institute of Interior Design Journal
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    • v.15 no.6 s.59
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    • pp.247-254
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    • 2006
  • Apparently light does exist even if it does not have certain form that an object might have. The history of architecture can be told as the history of light. As various master architects as well as scholars mentioned, light has been recognized as one of the most important aspects in perceiving space. Although there are complex multi dimensions in body sense and perception, experiencing space through light is preliminary formed by the outline to the degree of brightness. Light gives space specific and unique character by limiting or enlarging the space by wrapping an object or by reflection of material surfaces or by the intensity of light itself. It is fundamentally important to recognize the essential relationship between light and perception of space through various medias such as material, form, movement and so on. Three types of space perception and cognition by light that have been categorized after studying the most significant writings on light become the core method to further analyze the selected case projects. In this research, we will study how interior space is expressed through different light conditions with above mentioned characteristics and how such expressions can be applicable to the design of interior space.

IRAS 09425-6040: A Silicate Carbon Star with Crystalline Dust

  • Suh, Kyung-Won;Kwon, Young-Joo
    • The Bulletin of The Korean Astronomical Society
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    • v.37 no.2
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    • pp.140.2-140.2
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    • 2012
  • The silicate carbon star IRAS 09425-6040 shows very conspicuous crystalline silicate dust features and excessive emission at far infrared. To investigate properties of dusty envelopes around the object, we use radiative transfer models for axisymmetric and sphericallly symmetric dust distributions. We perform model calculations for various possible combinations of dust shells and disks with various dust species. We compare the model results with the observed spectral energy distributions (SEDs) including the IRAS, ISO, AKARI, MSX and 2MASS data. We find that a model with multiple disks of amorphous and crystalline silicate and multiple spherical shells of carbon dust can reproduce the observed SED fairly well. This supports the scenario for the origin of silicate carbon stars that oxygen-rich material was shed by mass loss when the primary star was an M giant and the O-rich material is stored in a circumbinary disk. Highly (about 75 %) crystallized forsterite dust in the disk can reproduce the conspicuous crystalline features of the ISO observational data. This object looks to have a detached silicate and H2O ice shell with a much higher mass-loss rate. It could be a remnant of the chemical transition phase. The last phase of stellar winds of O-rich materials looks to be a superwind.

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Development of Multi-Material DLP 3D Printer (다중재료 DLP 3차원 프린터의 개발)

  • Park, Se-Won;Jung, Min-Woo;Son, Yong-Un;Kang, Tae-Young;Lee, Chibum
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.26 no.1
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    • pp.100-107
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    • 2017
  • 3D printing is a technology that converts a computer-generated 3D model into a real object with additive manufacturing technology. A majority of 3D printing technologies uses one material, and this is considered a limitation. In this study, we developed a multi-material 3D printer by adopting dual resin vat and cleaning system with DLP (Digital Light Processing) 3D printing technology. The developed multi-material DLP 3D printer is composed of a manufacturing system, cleaning system, transporting system, and automatic resin recharging system. Various 3D structures were 3D printed with two materials, thus demonstrating the potential. Printing performance of the multi-material DLP 3D printer was studied by performing a comparative surface roughness test and tension test on specimens composed of one material as well as those composed of two materials.

A vision system for autonomous material handling by static and dynamic range finding (정적 및 동적 range 검출에 의한 원료 처리 자동화용 vision 시스템)

  • 안현식;최진태;이관희;신기태;하영호
    • Journal of the Korean Institute of Telematics and Electronics S
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    • v.34S no.10
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    • pp.59-70
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    • 1997
  • Until now, considerable progress has been made in the application of range finding techanique performing direct 3-D measurement from the object. However, ther are few use of the method in the area of the application of material handing. We present a range finding vision system consisting of static and dynamic range finders to automate a reclaimer used for material handling. A static range finder detects range data of the front part of the piles of material, and a height map is obtained from the proposed image processing algorithm. The height map is used to calculate the optimal job path as features for required information for material handling function. A dynamic range finder attached on the side of the arm of the reclaimer detects the change of the local properties of the material with the handling function, which is used for avoiding collision and detecting the ending point for changing direction. the developed vision systm was applied to a 1/20 simulator and the results of test show that it is appropriate to use for automating the material handling.

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Detection of Foreign Objects Using Bobbin Probe in Eddy Current Test (이물질에 대한 ECT Bobbin Probe 검출 감도)

  • Jung, Hee-Sung;Kweon, Young-Ho;Lee, Dong-Ha;Shin, Wook-Jo;Yim, Chan-Ki
    • Journal of the Korean Society for Nondestructive Testing
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    • v.36 no.4
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    • pp.295-299
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    • 2016
  • Residual foreign objects at the secondary side (top of the tubesheet and tube support plates) of a steam generator are likely to cause a leak by causing wear in the tube. The extent of wear is significantly affected by the material, shape, and size of the foreign object, and the corrosion properties of the tube. The presence of foreign objects at the top of the tubesheet and tube support plates has been identified using remote visual inspection methods such as the foreign object search and retrieval and eddy current test (ECT). The detection of the residual foreign object at the secondary side of a steam generator has limitations that depend on the material properties and the condition of contact with the tube. In this study, which is vertical and horizontal from the upper tubesheet, the corresponding bobbin ECT signals were collected and analyzed to measure its ability to detect foreign objects.

A Study on the Relationship to Installation Art in Deconstruction Architecture Design (해체주의 건축 디자인에서 설치미술과의 상관성에 관한 연구)

  • 김명옥
    • Korean Institute of Interior Design Journal
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    • no.12
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    • pp.10-17
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    • 1997
  • The lastest art is being characterised by an ever active exchange between different genre. This is a study on the installation aspect in deconstruction architectured and interior design. The progressive and aggressive nature of installatation art embodies uncatagorized genre, the freedom of material application, introduction of the notion of time in space, the reversion of subject and object, the union of art and every experience, understanding of object through deconstruction, enlargement of concept of space, collage-style composition and layer technique. I can conclude that the installation aspect in Tshumi's Parc de la Villette is its call upon the audience to actively participate, the introduction of a coincidental conjunction, its challenge on the conventional idea of park and its flexibility caused by human activity and time. In Hadid's Hong Kong Peak Club the installation aspect is the application of layer technique using four enormous beams horizontally laid out on a man-made moutain. Furthermore, Libeskind's pursuit of the mental in Berlin Museum Extension through the penetration of an invisible line into a void creates a new interpretation of the role of a museum and thus relates itself to installation art. The installation aspect in Himmelblau's Vienna Roof Renovation is the literal deconstruction of the roof of an old building in the old section of Wien and the expression of time and space through the interrelationship between interior and exterior environment by the use of juxtaposition technique. Finally, I note that the installation aspect in Gehry's Santa Monica Residence is the reorganization of cheap material as a form of 'object', that creates spon-taneity, movement as well as flow of time in space and ex-hibit the double-sidedness of the visible world.

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A Study on Types of 3D Printing Applications and Their Characteristics in Fashion Design (패션디자인의 3D 프린팅 적용 방법과 특성 연구)

  • Lee, Jung Soo
    • Journal of Fashion Business
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    • v.24 no.4
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    • pp.130-143
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    • 2020
  • The development of three-dimensional (3D) printing technology is bringing new innovations to various fields such as health care, architecture, and fashion. 3D printing can be manufactured to suit the size of the consumer's body, modify the design to meet their tastes, and produce small quantities of various products. Therefore, 3D printing in the field of fashion has great potential. The purpose of this study was to investigate various application models of 3D printing for fashion design and analyze their characteristics after developing the fashion garment samples. First, the background of 3D printing was reviewed then, fashion designed by a 3D printing application was analyzed. As a result, four types of 3D printing applications were developed: object-attached, linkage, kinematics, and assembly. The object-attached type was the method of printing 3D material as an object in the intended shape and form and was attached to the garment by sewing. The linkage type referred to printing 3D material in small pieces of certain shapes that could be linked. The kinematics type was structures with hinges that could flex to fit the human body. The assembly type referred to developing 3D materials in female and male pieces such as nuts and bolts. By providing the advantages, disadvantages, trial-and-errors, and challenges of the 3D printing fashion design process, this study contributes to the effective applications and possibilities of future design.

Prediction of Color Reproduction using the Scattering and Absorption Coefficients derived from the Kubelka-Munk model in Package Printing (패키지 인쇄에 있어서 Kubelka-Munk Model 유래의 산란 및 흡수 계수를 이용한 색상 재현성 예측)

  • Hyun, Young-joo;Park, Jae-sang;Tae, Hyun-chul
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.27 no.3
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    • pp.203-210
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    • 2021
  • With the development of package printing technology, the package has expanded from the basic function of protecting products to the marketing function through package design. Color, the visual element that composes the package design, is delivered to the consumer most quickly and effectively. As color marketing of these package designs expands, accurate color reproduction that the product wants to express is becoming more important. The color of an object is transmitted by absorption and scattering of light. Spectral reflectance refers to the intensity of light reflected by an object at different wavelengths by the spectral effect. As a result, the color of the object is expressed in various colors. Packaged printing inks have their own absorption and scattering coefficients, and the Kubelka-Munk model for color reproduction and prediction defines the relationship between these correlation coefficients through reflectance. In the Kubelka-Munk model for color reproduction and prediction, the relationship between the absorption and scattering coefficients (K/S) of printed material is predicted as the sum of the K/S values according to the mixing ratio of all color ink used. In this study, the reflectance of the measured print is reversely calculated at the mixing ratio of print ink using the Kubelka-Munk model. Through this, the relationship value of the ink-specific absorption/scattering coefficient constituting the final printed material is predicted. Delta E is derived through the predicted reflectance, and the similarity between the measured value and the predicted value is confirmed.