http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Nam, Sanghun,Patil, Ashok Kumar,Patil, Shashidhar,Chintalapalli, Harinadha Reddy,Park, Kyoungju,Chai, Youngho SAGE Publications 2013 Proceedings of the Institution of Mechanical Engin Vol.227 No.12
<P>A spatial modelling system with a new interface which is optimized for automotive design is proposed in the conceptual modelling phase. In the initial sketch stage to set the volume and the ratio of the car, the automotive styling is created using a two-dimensional plane sketch with an accurate input and a designer-friendly interface. The character lines, which have important implications in the design of the car, are drawn with a curve-based oversketch. The shape of the car is modified using area-based modification. A completed two-dimensional model consists of converting the character lines to a three-dimensional car model. In the three-dimensional spatial oversketch stage, the edge and mesh on the surface are deformed by viewing the three-dimensional shape of the vehicle with various views using a spatial input device and stereoscopic display. Edge-based deformation modifies single or multiple edges while maintaining continuity between the surfaces. A sculpting technique is applied to execute special shapes such as the accent lines and the strake lines. A sketch system which can be used by designers to perform three-dimensional spatial modelling is proposed.</P>
G Ajay Kumar,Ashok Kumar Patil,Hanna Lee(이한나),Ire Eom(엄이레),Young Ho Chai(채영호) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
The use of laser scanner 3D point cloud data and CAD models help for construction, monitoring and retrofitting of complex engineering objects in heavy industrial plants. Moreover, it reduces the time, effort, and cost required for the BIM process. Connecting the laser scanner generated point cloud data with physical world helps the users to find, analyze and modify the specific element of the model corresponding to the physical model. This paper presents a framework for point cloud acquisition, alignment of generated point cloud data with physical world model, adaptive 3D modeling and retrofitting. The workflow includes an efficient 4 in 1 approach, beginning with the alignment of preprocessed point cloud data with real world physical model using real time partial point cloud from LiDAR, next automated 3D model generation from point cloud data and virtual retrofitting of CAD models, finally an overlap of generated 3D models on the real environment from the camera-view is efficiently visualized using wearable VR device. The method is demonstrated in a real-world setting, using the partial point cloud from LiDAR, pre-processed real-world point cloud data and CAD models of an industrial plant.
Sensed Unit Motion based Authoring for the Precise Human Movements
Bharatesh Chakravarthi(바라테스),Ashok Kumar Patil(아쇽 쿠말 파틸),Adithya Balasubramanyam(아디띠야 비),Jae Yeong Ryu(류재영),Young Ho Chai(채영호) 대한기계학회 2020 대한기계학회 춘추학술대회 Vol.2020 No.12
With the expeditious advancements in Motion Capture (mocap) systems, maneuvering motion data for extensive usage is a challenging task. In this paper, we propose a comprehensive technique to author new motion or modify existing motion data by considering vital motion parameters. Motion data is a collection of motion frames where each frame corresponds to the position and orientation of bone segments. Unit motion is a sequence of motion between any two keyframes captured either using a mocap system or authored using a conventional motion authoring tool. We consider a predefined set of unit motions to author precise human movements. Unit motion editing modifies swing, twist, and speed parameters to generate a consistent, accurate, and meaningful motion. The resultant unit motions are integrated into a meaningful sequence to synthesize various desired human movements. We demonstrate our work using a set of basic unit yoga motions to author meticulous and complete yoga movements.
Interactive LEGO modeling using dual wands with relative attitude mapping
Harinadha Reddy C,Shashidhar Patil,Ashok Kumar Patil,Youngho Chai 한국HCI학회 2012 한국HCI학회 학술대회 Vol.2012 No.1
본 논문에서는 상대 자세로 위치를 매핑할 수 있는 두 개의 완드를 이용한 인터렉티브 레고 모델링을 제안하였다. 각 완드는 3차원 공간상의 자세를 추적할 수 있는 관성측정장치를 포함하고 있다. 관성측정장치는 3축의 관성센서(자이로스코프, 가속도계와 디지털 나침판)로 구성되어 있으며, 보드에 프로그램 되어 포함된 Quaternion Kalman Filter 알고리즘을 이용하여 관성센서로부터의 신호를 자세로 융합하였다. 듀얼 완드로 인터렉티브 레고 모델링을 실현시키기 위하여 완드의 3차원 공간상의 위치를 두 완드의 상대 자세를 이용하여 추적할 수 있게 하였다. 사용자는 듀얼 완드를 통하여 레고 모델링 프로그램과 용이하게 상호작용하면서 레고 모델링을 실현할 수 있게 된다. We present interactive LEGO modeling using dual wands with relative attitude mapping. Wands incorporate Inertial Measurement Units (IMU) for computing attitude in 3Dimensional space. IMU has 3-axis inertial sensors (gyroscope, accelerometer and digital compass) and onboard Quaternion Kalman Filter (KF) fuses data from inertial sensors for attitude estimation. In order to build 3D LEGO models using dual wands, relative attitude mapping technique developed to navigate in 3D space. User can interact with modeling software very easily to build LEGO models.