The Status, Challenges, and Future of Additive Manufacturing in Engineering

The Status, Challenges, and Future of Additive Manufacturing in Engineering

Wei Gao, Yunbo Zhang, Devarajan Ramanujan, Karthik Ramani, Yong Chen, Christopher B. Williams, Charlie C.L. Wang, Yung C. Shin, Song Zhang, Pablo D. Zavattieri
Computer-Aided Design, doi:10.1016/j.cad.2015.04.001

Additive manufacturing (AM) is poised to bring about a revolution in the way products are designed, manufactured, and distributed to end users. This technology has gained significant academic as well as industry interest due to its ability to...

Hand Grasp and Motion for Intent Expression in Mid-Air Virtual Pottery

Hand Grasp and Motion for Intent Expression in Mid-Air Virtual Pottery

Vinayak and Karthik Ramani
In Proceedings of Graphics Interface 2015 (GI '15). Canadian Information Processing Society, Toronto, Ont., Canada, Canada

We describe the design and evaluation of a geometric interaction technique for bare-hand mid-air virtual pottery. We model the shaping of a pot as a gradual and progressive convergence of the pot-profile to the shape of the user's hand represented...

A Gesture-free Geometric Approach for Mid-Air Expression of Design Intent

A Gesture-free Geometric Approach for Mid-Air Expression of Design Intent

Vinayak and Karthik Ramani
Computer-Aided Design (Elsevier), Available online 17 July 2015, ISSN 0010-4485, http://dx.doi.org/10.1016/j.cad.2015.06.006.

Abstract: The advent of depth cameras has enabled mid-air interactions for shape modeling with bare hands. Typically, these interactions employ a finite set of pre-defined hand gestures to allow users to specify modeling operations in virtual...

Sketcholution: Interaction Histories for Sketching

Sketcholution: Interaction Histories for Sketching

Zhenpeng Zhao, William Benjamin, Niklas Elmqvist, Karthik Ramani
International Journal of Human-Computer Studies, 82 (2015) 11-20

We present Sketcholution, a method for automatically creating visual histories of hand-drawn sketches. Such visual histories are useful for a designer to reflect on a sketch, communicate ideas to others, and fork from or revert to an earlier point...

Informing Early Design Via Crowd-based Co-creation

Informing Early Design Via Crowd-based Co-creation

Devarajan Ramanujan, Vinayak, Yash Nawal, Tahira Reid, Karthik Ramani
In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (pp. V007T06A043-V007T06A043). American Society of Mechanical Engineers.

Customer inputs in the early stages of design can potentially lead to completely new outlooks in concept generation. We propose crowd-based co-creation as a means to this end. Our main idea is to think of the customer as a source of initial design...

HandiMate: Create and Animate using everyday objects

HandiMate: Create and Animate using everyday objects

Jasjeet Singh Seehra, Ansh Verma, Kylie Peppler, Karhik Ramani
Proceedings of the ACM Conference on Tangible Embedded and Embodied Interactions, Stanford University, January 15-19, 2015

The combination of technological progress and a growing interest in design has promoted the prevalence of DIY (Do It Yourself) and craft activities. In a similar spirit, we introduce HandiMate, a platform that makes it easier to fabricate and...

Heat-Passing Framework for Robust Interpretation of Data in Networks

Heat-Passing Framework for Robust Interpretation of Data in Networks

Yi Fang, Mengtian Sun, Karthik Ramani
PLoS ONE 10(2), doi:10.1371/journal.pone.0116121, 2015

Researchers are regularly interested in interpreting the multipartite structure of data entities according to their functional relationships. Data is often heterogeneous with intricately hidden inner structure. With limited prior knowledge,...

TIMMi: Finger-worn Textile Input Device with Multimodal Sensing in Mobile Interaction

TIMMi: Finger-worn Textile Input Device with Multimodal Sensing in Mobile Interaction

Sang Ho Yoon, Vinh Nguyen, Ke Huo, Karthik Ramani
In Proceedings of the 9th International Conference on Tangible, Embedded, and Embodied Interaction (TEI'15), Stanford University, USA, 2015

Abstract: We introduce TIMMi, a textile input device for mobile interactions. TIMMi is worn on the index finger to provide a multimodal sensing input metaphor. The prototype is fabricated on a single layer of textile where the conductive silicone...

SOFTii: Soft Tangible Interface for Continuous Control of Virtual Objects with Pressure-based Input

SOFTii: Soft Tangible Interface for Continuous Control of Virtual Objects with Pressure-based Input

Vinh Nguyen, Pramod Kumar, Sang Ho Yoon, Ansh Verma, Karthik Ramani
Proceedings of the 9th International Conference on Tangible, Embedded, and Embodied Interaction, Jan 15-19, Stanford University, USA. pp 539-544, 2015

We present SOFTii, a flexible input system for topography design and continuous control via external force. Our intent is to provide a tactile metaphor for pressure-based surface input. In this study, two prototypes of SOFTii have been fabricated:...