Merging Sketches for Creative Design Exploration: An Evaluation of Physical and Cognitive Operations

Merging Sketches for Creative Design Exploration: An Evaluation of Physical and Cognitive Operations

Senthil Chandrasegaran, Sriram Karthik Badam, Ninger Zhou, Zhenpeng Zhao, Lorraine Kisselburgh, Kylie Peppler, Niklas Elmqvist, Karthik Ramani
In proceedings of the 2017 Graphics Interface Conference.

Despite its grounding in creativity techniques, merging multiple source sketches to create new ideas has received scant attention in design literature. In this paper, we identify the physical operations that in merging sketch components. We also...

The Influence of Toy Design Activities on Middle School Students Understanding of the Engineering Design Processes

The Influence of Toy Design Activities on Middle School Students Understanding of the Engineering Design Processes

Ninger Zhou, Nielsen L. Pereira, Tarun Thomas George, Jeffrey Alperovich, Joran Booth, Senthil Chandrasegaran, Jeffrey David Tew, Devadatta M. Kulkarni, Karthik Ramani
Journal of Science Education and Technology (2017): 1-13.

The societal demand for inspiring and engaging science, technology, engineering, and mathematics (STEM) students and preparing our workforce for the emerging creative economy has necessitated developing students self-efficacy and understanding of...

SurfNet: Generating 3D shape surfaces using deep residual networks

SurfNet: Generating 3D shape surfaces using deep residual networks

Sinha, A., Unmesh, A., Huang, Q., and Ramani, K
Proceedings of the IEEE conference on computer vision and pattern recognition. 2017.

  3D shape models are naturally parameterized using vertices and faces, i.e., composed of polygons forming a surface. However, current 3D learning paradigms for predictive and generative tasks using convolutional neural networks focus on a...

Product personalization enabled by assembly architecture and cyber physical systems

Product personalization enabled by assembly architecture and cyber physical systems

Changbai Tan, S. Jack Hu, Haseung Chung, Kira Barton, Cecil Piya, Karthik Ramani and Mihaela Banu
CIRP Annals 66.1 (2017): 33-36.

Personalization is an emerging manufacturing paradigm towards meeting diversified customer needs. This paper proposes a framework for producing personalized products efficiently. An approach for optimal mix of different module types is proposed in...

BikeGesture: User Elicitation and Performance of Micro Hand Gesture as Input for Cycling

BikeGesture: User Elicitation and Performance of Micro Hand Gesture as Input for Cycling

Yanke Tan, Sang Ho Yoon, Karthik Ramani
In Proceedings of the 2017 CHI Conference Extended Abstracts on Human Factors in Computing Systems (CHI EA' 17: 2147-2154), Denver, CO, May 6-11, 2017

Abstract: The use of hand gestures has a potential as a promising input metaphor. Wearables like smart textile and data gloves can provide hand gesture recognition to potentially replace, augment or improve existing input methods. Although recent...

VizScribe: A visual analytics approach to understand designer behavior

VizScribe: A visual analytics approach to understand designer behavior

Chandrasegaran, S., Badam, S. K., Kisselburgh, L., Peppler, K., Elmqvist, N., and Ramani, K.
International Journal of Human-Computer Studies, 100, April 2017, pp. 66 -- 80.

Design protocol analysis is a technique to understand designers’ cognitive processes by analyzing sequences of observations on their behavior. These observations typically use audio, video, and transcript data in order to gain insights into the...

Modeling Cumulative Arm Fatigue in Mid-Air Interaction based on Perceived Exertion and Kinetics of Arm Motion

Modeling Cumulative Arm Fatigue in Mid-Air Interaction based on Perceived Exertion and Kinetics of Arm Motion

Sujin Jang, Wolfgang Stuerzlinger, Satyajit Ambike, Karthik Ramani
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI 2017: 3328-3339), Denver, CO, May 6-11, 2017 (Acceptance Rate: 25%)

Quantifying cumulative arm muscle fatigue is a critical factor in understanding, evaluating, and optimizing user experience during prolonged mid-air interaction. A reasonably accurate estimation of fatigue requires an estimate of an individual's...

WireFab: Mix-Dimensional Modeling and Fabrication for 3D Mesh Models

WireFab: Mix-Dimensional Modeling and Fabrication for 3D Mesh Models

Min Liu, Yunbo Zhang, Jing Bai, Yuanzhi Cao, Jeffrey Alperovich, Karthik Ramani
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI 2017: 965-976), Denver, CO, May 6-11, 2017 (Acceptance Rate: 25%)

We propose WireFab, a rapid modeling and prototyping system that uses bent metal wires as the structure framework. WireFab approximates both the skeletal articulation and the skin appearance of the corresponding virtual skin meshes, and it allows...

Window-Shaping: 3D Design Ideation by Creating on, Borrowing from, and Looking at the Physical World

Window-Shaping: 3D Design Ideation by Creating on, Borrowing from, and Looking at the Physical World

Ke Huo, Vinayak, Karthik Ramani
In Proceedings of the TEI'17: Tenth International Conference on Tangible, Embedded, and Embodied Interaction. ACM. (TEI'17: 37-45) , Yokohama, Japan, Mar., 2017

We present, Window-Shaping, a tangible mixed-reality (MR) interaction metaphor for design ideation that allows for the direct creation of 3D shapes on and around physical objects. Using the sketch-and-inflate scheme, our metaphor enables quick...

Co-3Deator: A Team-First Collaborative 3D Design Ideation Tool

Co-3Deator: A Team-First Collaborative 3D Design Ideation Tool

Cecil Piya, Vinayak, Senthil Chandrasegaran, Niklas Elmqvist, Karthik Ramani
In Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI 2017: 6581-6592), Denver, CO, May 6-11, 2017 (Acceptance Rate: 25%)

We present Co-3Deator, a sketch-based collaborative 3D modeling system based on the notion of "team-first" ideation tools, where the needs and processes of the entire design team come before that of an individual designer. Co-3Deator includes two...