Spatial augmented reality for physical drawing

We present an Augmented Reality (AR) application which allows a user to manipulate a piece of virtual clay using a marker-free unencumbered hand. By removing the need to wear a glove or place markers on the hand the application is made more accessible, allowing users to interact with the environment without special preparation.

1998

Abstract To create an effective illusion of virtual objects coexisting with the real world, see-through HMD-based Augmented Reality techniques supplement the user's view with images of virtual objects. We introduce here a new paradigm, Spatially Augmented Reality (SAR), where virtual objects are rendered directly within or on the user's physical space.

Computer-Aided Design and Applications

As additive manufacturing (3D printing) technology becomes increasingly mainstream, new tools are required to enhance creative endeavors in disciplines such as fashion design, which have been slow to embrace digital technologies and computer-aided design software. Additionally, new techniques are required based on an understanding of the limitations of common desktop extrusion-based 3D printers, with 2.5D printing presenting new opportunities to rapidly produce complex forms, such as fashion, which can be assembled by hand as a hybrid approach to digital manufacturing. This paper presents a parametric system through which a new type of digitally fabricated, hand-assembled knit can be customized using a constrained selection of interactive controls. Novice users may rapidly iterate a pattern of loops and floats at a scale matching their Fused Deposition Modeling (FDM) 3D printer, creating a series of knit courses which can be assembled into a textile of expandable dimensions. More advanced users may modify the geometry or logic of the system, building new forms of knits that could not be manufactured through traditional means. This paper will guide designers through the process of developing a new typology of textile appropriate for production on ubiquitous FDM machines, following a workflow from 2D to 2.5D to 3D. Examples were printed at various scales and contribute to discourse on customization, parametric design and visual programming languages for additive manufacturing.

2015

This paper analyzes what technologies, devices and equipment are available today that can contribute to the creation of an interactive environment based on Spatial Augmented Reality (SAR). The objective is to define what should be considered to build a room-sized workspace equipped with SAR tools, aimed to facilitate both artists and designers to develop their creations. This workspace will be designed as a "white box" cabin in which the user will be placed, The user will be able to interact with images projected on the walls and primary volumes by using gestures and their own body movements. Interaction with an interface based only on projected images can be carried out in an intuitive and gestural way, removing the technological constraints that appear when working simultaneously with different devices and interfaces. To be immersed in a physical space where the environment itself acts as a working tool would change the concept of a workplace by eliminating everything that could cause problems for the creative task. Once built, this prototype would be used to raise a methodology for analyzing the influence of SAR in the process of creation of indoor spaces, both at creative and emotional level in designers and artists, as well as the influence in the design itself obtained.

2001

We present techniques for creating a Spatially Augmented Reality for moving polygonal objects in an indoor environment, and a sys- tem that uses these techniques for painting in 3D on these objects in real time. By tracking the object and projecting on its different surfaces with two or more projectors, our system creates a dynamic spatially augmented version of the

2014

A revolution in Computer Interface Design is changing the way we think about the Computer.AR is a system which maps the real world environment in a Virtual system deals with the combination of a real world & Computer generated data. This paper surveys the field of Augmented Reality in which 3D virtual objects are integrated into 3D real environment in real time. It describes the medical manufacturer, visualization, path planning, entertainment & military application that have been explored. This paper describes the characteristics of the augmented reality systems including a detailed discussion of the tradeoffs between optical & video blending approaches. This paper provides a starting point for anyone interested in researching using augmented reality. In this paper we present a prototype augmented reality for accessing abstract information in real world Computer fields & environment .This paper represents an overview of the basic concepts of the augmented reality (AR) & the main concepts of this technology. It describes the main fields in which AR is applied nowadays & important AR devices.

Handbook of Augmented Reality, 2011

Spatial Augmented Reality allows the appearance of physical objects to be transformed using projected light. Computer controlled light projection systems have become readily available and cost effective for both commercial and personal use. This chapter explores how large Spatial Augmented Reality systems can be applied to enhanced design mock-ups. Unlike traditional appearance altering techniques such as paints and inks, computer controlled projected light can change the color of a prototype at the touch of a button allowing many different appearances to be evaluated. We present the customized physical-virtual tools we have developed such as our hand held virtual spray painting tool that allows designers to create many customized appearances using only projected light. Finally, we also discuss design parameters of building dedicated projection environments including room layout, hardware selection and interaction considerations. M.R. Marner ( )

Computer Graphics Forum, 2001

We present a system for sketching in 3D, which strives to preserve the degree of expression, imagination, and simplicity of use achieved by 2D drawing. Our system directly uses user-drawn strokes to infer the sketches representing the same scene from different viewpoints, rather than attempting to reconstruct a 3D model. This is achieved by interpreting strokes as indications of a local surface silhouette or contour. Strokes thus deform and disappear progressively as we move away from the original viewpoint. They may be occluded by objects indicated by other strokes, or, in contrast, be drawn above such objects. The user draws on a plane which can be positioned explicitly or relative to other objects or strokes in the sketch. Our system is interactive, since we use fast algorithms and graphics hardware for rendering. We present applications to education, design, architecture and fashion, where 3D sketches can be used alone or as an annotation of an existing 3D model.

Proceedings of the 2001 symposium on Interactive 3D graphics - SI3D '01, 2001

We present a novel drawing system for composing and rendering perspective scenes. Our approach uses a projective 2D representation for primitives rather than a conventional 3D description. This allows drawings to be composed with the same ease as traditional illustrations, while providing many of the advantages of a 3D model. We describe a range of user-interface tools and interaction techniques that give our system its 3D-like capabilities. We provide vanishing point guides and perspective grids to aid in drawing freehand strokes and composing perspective scenes. Our system also has tools for intuitive navigation of a virtual camera, as well as methods for manipulating drawn primitives so that they appear to undergo 3D translations and rotations. We also support automatic shading of primitives using either realistic or non-photorealistic styles. Our system supports drawing and shading of extrusion surfaces with automatic hidden surface removal and highlighted silhouettes. Casting shadows from an infinite light source is also possible with minimal user intervention.

Journal of Engineering Education Transformations, 2015

Engineer which allows engineers to create designs, represent them on a drawing sheet, calculate distances, and create a blue print before manufacturing. All engineering students undergo a complete course on engineering drawing where orthographic projections are taught. In orthographic projections, the students are asked to imagine a 3D situation and make the 2D orthographic projection drawing. This part of 3D imagination and converting it into orthographic projection is difficult for students to mentally visualize. To ease the student's imagination, An Augmented Reality solution is developed jointly by BMSCE and Bosch (RBEI), Bangalore. A powerful 3D graphics association has been developed which forms the primary source of developing the drawing as orthographic projections that is viewable in 3D in real world. The current article focuses on the importance of AR in engineering education and its benefits.