Supporting design with 3D-annotations in a collaborative virtual environment (original) (raw)
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Product information visualization and augmentation in collaborative design
Computer-Aided Design, 2008
In this paper, a collaborative system for product information visualization and augmentation is presented. The developed system allows the users, who can be remotely distributed, to view a product model, which is a geometric representation of the product, from different perspectives. They can choose to view design and product history, such as previous modification processes and feature information of the product independently. The product models displayed to the users are immediately updated after any design modifications have been made to the CAD model. Product features being discussed can be highlighted to draw the users' attention. In addition, modifications can be displayed dynamically for the users to evaluate the design effect. The product history document module in the system provides a userfriendly interface for retrieving design records. After a specific record has been chosen, the related product model is displayed, and it can be aligned with the current product model for the ease of comparison and evaluation. The feature information of the product is displayed using virtual ''floating'' annotations linked to the related features. A user interface to enter annotations is provided, and the annotations entered by different users can be shared in real time. A cluster-based greedy algorithm is implemented to avoid overlapping annotations in the field of view.
A voice-based annotation system for collaborative computer-aided design
Journal of Computational Design and Engineering, 2020
In this paper, we describe a voice-based interaction mechanism to annotate 3D models directly from a computer-aided design (CAD) modeling environment. The audio signal is captured and automatically transcribed to a textual 3D note, which is attached to the geometry and made available to other product information and business processes across the enterprise via a product data management system. Our approach provides a more natural and intuitive method to capture design and engineering knowledge that is particularly effective when large amounts of information need to be communicated. We discuss the rationale of the software architecture and the value of this modality for capturing knowledge in a collaborative engineering context. Finally, we examine the results of an experiment to validate our proposal. Our results show that 3D annotations are an effective mechanism to communicate design knowledge, which suggests the need for further developments in the areas of multimodal interaction...
Shape Knowledge Embedded in a Collaborative Virtual Design Environment for Architectural Design
VR-based design environment have been traditionally not connected to companies' design repositories and knowledge management systems. Till now these tools are mainly used for the initial exploration of innovative and original three-dimensional spaces and curves. Our approach encourages the use of VRbased design environments as design tools from where to reuse design solutions and to access design information, which are stored in internal repositories. This vision goes towards the development of a VR-based integrated design platform. Further, today's knowledge management systems show evident limitations when dealing with multimedia fi les and 3D models. In order to overcome this limitation a framework for embedding in our VR-based design environment a Knowledge Management system for multimedia content has been developed and it is here described. Our solution implies the use of annotation languages such as the recent MPEG7 ISO/IEC (Multimedia Content Description Interface) standard for metadata, which is based on the XML language. Data types handled in our system are multimedia formats including text, audio, video, images, and 3D models. The main contribution of our research activity is in providing an innovative and original approach for supporting the design process, which takes advantage both of the visualization and design capabilities of virtual reality technology and of the reuse of design solutions directly in VE, through the retrieval of 3D models and multimedia data from various sources.
Immersive redlining and annotation of 3D design models on the Web
Computers in Building, 1999
The Web now enables people in different places to view three-dimensional models of buildings and places in a collaborative design discussion. Already design firms with offices around the world are exploiting this capability. In a typical application, design drawings and models are posted by one party for review by others, and a dialogue is carried out either synchronously using on line streamed video and audio, or asynchronously using email, chat room, and bulletin board software. However, most of these systems do not allow designers to embed annotations and proposed design changes in the three-dimensional design model under discussion. We present a working prototype of a system that has these capabilities and describe the configuration of Web technologies we used to construct it.
Beyond Post-It: Structured Multimedia Annotations for Collaborative VEs
: Our approach enables creating multimedia annotations and provides a tree-based structure to support traceability in decision making. (a) An annotation in the VE, created by user "Obama". It also shows how to create a new annotation. (b) Annotation as it is playing. It relies on camera movements (synchronized with audio) to show an anomaly in the model. (c) The discussion structure. Balloons indicate annotations' type and colors denote arguments' type (Pro, Con, +Info). The user is adding a (fourth) positive argument (Pro) with an audio annotation, as it can be seen by active buttons.
Annotating and sketching on 3D web models
Proceedings of the 7th international conference on Intelligent user interfaces - IUI '02, 2002
This paper reports on our progress and findings in building a Web annotation system for non-immersive 3D virtual environments. Over the last two years, we developed and tested two systems for collaborating designers to comment on virtual 3D models. Our first system, Redliner [12] lets design team members browse and leave text annotations on surfaces in three-dimensional models. Experience with Redliner, including two user evaluations in different settings, led us to develop Space Pen [13], a second annotation system with improved interaction capabilities. It goes beyond the post-it note metaphor, allowing users to draw in and on the virtual environment.
Managing Information of Cad Projects In Virtual Environments
tecgraf.puc-rio.br
CAD models are an important step in several engineering projects. In order to maintain consistence, this information has to be attached to the 3d model, which is usually a difficult task. An even more important task nowadays is to set notes in the parts inside a model. Some techniques for setting annotations were proposed and developed, by integrating into a collaboration tool in order to make sure the procedure can be done in collaborative environments. Two representation for notes are explained here, one just for textual information which display the complete information in the virtual environment and other that uses icons based in gui windows desktops to attach any kind of data file to an virtual object.
2004
Sketching in 3D is a useful way to access knowledge-based design systems. In this paper we present a framework for sketch-based interaction with intelligent systems in threedimensional domains. The Space Pen software written in Java 3D is used as a platform to implement two architectural lighting design tools. Space Pen supports user annotations in the form of sketching, virtual post-it notes, and sketch object insertions. Spot supports access to direct sunlight simulation and visualization in a selected time period with sketching in 3D space. Light Pen suggests placement of lamps to light an intended area in space. In these examples, the 3D sketching front-end serves as an interface to a backend knowledge-based system. The designer can pose problems by drawing onto a 3D model to which the knowledge-based systems offer a solution by either providing quantitative data analysis or modifying the 3-D model. The specific domain of architectural lighting is implemented, it exemplifies a more general class of 3-D pen-based interaction with intelligent systems.