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3D 핸디형 스캐너와 3D 프린팅 기술 기반 드레이핑용 커스텀 메이드 드레스폼 개발
유은주,송화경 한국의류산업학회 2022 한국의류산업학회지 Vol.24 No.4
This study aimed to develop a a custom-made dress form for draping using a live model’s 3D body scan obtained from an entry-level 3D handheld scanners, 3D modeling software and 3D printing technology. A female subject was recruited whose body size fell under the normal (N) body shape criteria suggested by KS K 0051. First, the handheld scanner reduced the length of the legs in scanning, but most of the scanning operations between the neck and crotch lev- els were conducted accurately. Therefore, this study was designed to develop a torso dress form. The full body 3D scan was edited into a torso shape using ZBrush® software. Using Rhinoceros® and Materialise's Magics software, a 3D body scan was modeled so that the user could fit two types of mannequin stands (one with a neck fixation from above and one with an insert from below) to the dress form. The body scan was divided into 9 pieces to fit the printable size of the Strata- sys 3D printer Fortus 250mc, and the cross-sectional distance from the center to the periphery was downsized by 2 mm. After outputting the dress form scan file with a 3D printer, the dress form was manufactured by the first covering it with a 4 oz nonwoven pad and the second covering with a single jersey material.
비접촉식 3D 스캐너를 이용한 복합재료 소형선박의 품질관리 기법
이동건,박본영 한국기계기술학회 2020 한국기계기술학회지 Vol.22 No.3
In recent years, studies on various 3D scanner applications, including those on quality control and reverse engineering, have been conducted in the shipbuilding industry. Appropriate scanner selection, scanning environment setting by targets, and data postprocessing are essential for effective 3D scanning projects for small crafts. In this study, a non-contact handheld-type 3D scanner was used for molds and hull products for the 10–30-ft class of small crafts. Small crafts have fewer geometric features and several glare surfaces; thus, anti-glare and texture feature addition preprocessing is critical. The 3D scanning results are used for geometry quality control of single panels and curved surfaces in craft hulls. Consequently, international rule-based weight estimation calculation sheets have been developed and applied for product weight quality control.
문석현(Moon, Seok Hyun),남옥우(Nam, Ock woo),최윤수(Choi, Yun Soo) 한국측량학회 2023 한국측량학회지 Vol.41 No.6
Today, it is widely used in important decision-making through design based on 3D drawings and the final results through 3D modeling, rather than designs based solely on 2D drawings. This is a positive function of the digital twin. Currently, 3D spatial information modeling can be acquired with a variety of equipment depending on the purpose. The various purposes include those that require rapid acquisition, those that require high accuracy and precision, and those that increase or decrease the resolution of data that will determine the quality of the data. The 3D modeling construction equipment that makes digital twin possible allows acquisition of data by appropriately converging LiDAR(Light Detection And Ranging), GPS(Global Positioning System), IMU(Inertial Measurement Unit), and cameras according to the purpose. Currently, terrestrial LiDAR is a product that shows high quality and high accuracy by converting indoor spaces into digital twins. In order to secure high location accuracy in indoor spaces, terrestrial LiDAR is used using T/S (total station) used in existing surveying. Research has been conducted to verify the location accuracy of the data acquired, and high-quality indoor spatial information has been produced by creating 3D modeling based on the verified accuracy. In this study, we compared the acquisition speed and data processing speed of two types of newly researched and developed mobile scanners in the same space, using terrestrial LiDAR, backpack-type laser scanner, and hand-held laser scanner, and compared based on terrestrial LiDAR. We verify the performance and conduct research on the use of 3D modeling using the acquired 3D Pointcloud. As a result of the study, it was confirmed that the point cloud created by each laser scanner shows a certain level of error and that 3D modeling can also be used.