Publications

RevoMaker

RevoMaker: Enabling Multi-directional and Functionally-embedded 3D Printing using a Rotational Cuboidal Platform

Wei Gao*, Yunbo Zhang*, Diogo C. Nazzetta, Karthik Ramani, Raymond J. Cipra
In Proceedings of UIST '15, Charlotte, NC, USA, to appear
MotionFlow for pattern analysis of human motion data. (a) Pose tree: a simplified representation of multiple motion sequences
aggregating the same transitions into a tree diagram. (b) A window dedicated to show a subtree structure based on a query. (c)
Space-filling treemap representation of the motion sequence data using slice-and-dice layout. (d) Node-link diagram of pose
clusters (nodes) and transitions (links) between them. This view supports interactive partition-based pose clustering. (e) Multi-tab
interface for storing unique motion patterns. (f) Animations of single or multiple selected human motions.

MotionFlow: Visual Abstraction and Aggregation of Sequential Patterns in Human Motion Tracking Data

Sujin Jang, Niklas Elmqvist, and Karthik Ramani
IEEE Transaction on Visualization and Computer Graphics (TVCG) / IEEE Conference on Visual Analytics Science and Technology (VAST) 2015. To appear.
screenShot4

A framework for visualization-driven eco-conscious design exploration

Deverajan Ramanujan, William Z. Bernstein, William Benjamin, Karthik Ramani, Niklas Elmqvist, Devadatta Kulkarni, Jeffrey Tew
Journal of Computing and Information Science in Engineering. To appear.
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ViSER_screenshot

Mutually coordinated visualization of product and supply chain metadata for sustainable design

William Z. Bernstein, Devarajan Ramanujan, Devadatta Kulkarni, Jeffrey Tew, Niklas Elmqvist, Fu Zhao, Karthik Ramani
Journal of Mechanical Design. To appear.
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Handimate_IDC

HandiMate: Exploring a Modular Robotics kit for Animating Crafted Toys

Sang Ho Yoon†, Ansh Verma†, Kylie Peppler, Karthik Ramani
In Proceedings of the 14th International Conference on Interaction Design & Children, Tufts University, June 21-24, 2015
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FrontFig

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
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gi2015

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
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Proximal Persistence

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.
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sketcholution

Sketcholution: Interaction Histories for Sketching

Zhenpeng Zhao, William Benjamin, Niklas Elmqvist, Karthik Ramani
International Journal of Human-Computer Studies, 82 (2015) 11–20
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interface_v2

Informing Early Design Via Crowd-based Co-creation

Devarajan Ramanujan, Vinayak, Yash Nawal, Tahira Reid, Karthik Ramani
ASME International Design Engineering Technical Conferences, August 2-5, Boston ,MA
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Handimate_Teaser

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
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ponejournal

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
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file148-2

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

Sang Ho Yoon, Vinh Nguyen, Ke Huo, Karthik Ramani
Proceedings of the 9th International Conference on Tangible, Embedded, and Embodied Interaction, Jan 15-19, Stanford University, USA. pp 269-272, 2015
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Softii

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
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thumnail

GestureAnalyzer: Visual Analytics for Pattern Analysis of Mid-Air Hand Gestures

Sujin Jang, Niklas Elmqvist, Karthik Ramani
Proceedings of the ACM Symposium on Spatial User Interaction, October 4-5, 2014, Honolulu, HI, USA
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Plex

Plex: Finger-Worn Textile Sensor for Mobile Interaction during Activities

Sang Ho Yoon, Ke Huo, Karthik Ramani
Proceedings of the International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct Publication, Sep 13-17, Seattle, USA. pp 191-194, 2014.
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BendID

BendID: Flexible Interface for Localized Deformation Recognition

Vinh Nguyen, Sang Ho Yoon, Ansh Verma, Karthik Ramani
Proceedings of the ACM international Joint Conference on Pervasive and Ubiquitous Computing, Sep 13-17, Seattle, USA. pp 553-557, 2014
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100_2888

Art Meets Engineering Design: An Approach for Reducing Sketch Inhibition in Engineers During the Design Process

Joran W. Booth, Abhinav K. Bhasin, and Karthik Ramani
ASME IDETC/CIE 2014
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IMG_0737

Evaluating the Bottom-Up Method for Functional Decomposition in Product Dissection Tasks

Joran W. Booth, Abhinav K. Bhasin, Tahira Reid, Karthik Ramani
ASME IDETC/CIE 2014
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AHP_pipeline

Prioritizing Design for Environment Strategies Using a Stochastic Analytic Hierarchy Process

Devarajan Ramanujan, William Z. Bernstein, Mikko Koho, Fu Zhao, Karthik Ramani
Journal of Mechanical Design, 136(7), 071002
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4

KINETOGAMI, A Reconfigurable and Printable Sheet Folding

Wei Gao, Karthik Ramani, Raymond J. Cipra and Thomas Siegmund
ASME Journal of Mechanical Design, 135(11), doi: 10.1115/1.4025506, 2013
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thumbs

Contextualizing Environmental Sustainability in Design Engineering Curricula

Devarajan Ramanujan, William Z. Bernstein, Monica Cardella, Karthik Ramani
ASME IDETC/CIE 2014
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graphical_abstract

PROTO-TAI: Quick Design Prototyping using Tangible Assisted Interfaces

Cecil Piya, Karthik Ramani
Proceedings of the ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2014, August 16-20, 2014, Buffalo, NY, USA
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Lateral and vertical transformations observed in the study. Lateral transformations can occur through modification of an existing sketch, or through the creation of a new sketch inspired from an existing sketch, to create a new idea. Vertical transformations can occur through adding details such as dimensions,  annotations, or features to an existing sketch, or through a new sketch showing a different detail, to develop an existing idea.

Collaborative Sketching with skWiki: A Case Study

Senthil Chandrasegaran, Sriram Karthik Badam, Zhenpeng Zhao, Niklas Elmqvist, Lorraine Kisselburgh, Karthik Ramani
Proceedings of the ASME IDETC/CIE Conference, Aug 17-20,Buffalo, NY, 2014.
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We present a screenshot of the ViSER tool. The supply chain shown is representative of the peripheral computer equipment industry. Each callout points to a specific feature of the ViSER platform and are described as follows: (A) a directed graph that represents the supply chain network as the edges connected to the selected nodes are shown in red, (B) a representation fo the product system graph oriented by a combination of force directed physics and user manipulation, (C) change propagation results for selected nodes of interest, (D) a comparison chart of impact categories for selected nodes of interest, (E) sparklines for each criterion with outliers shown in red and (F) the profile of selected node attributes, e.g.\ time and smog. A video demonstration of ViSER can be found here: \href{http://youtu.be/pDJAqW9H3ME}{\textcolor{blue}{http://youtu.be/pDJAqW9H3ME}}.

ViSER: Visualizing supply chains for eco-conscious redesign

William Z. Bernstein, Devarajan Ramanujan, Niklas Elmqvist, Fu Zhao, Karthik Ramani
ASME 2014 IDETC/CIE DFMLC
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jcp_2014

Remanufacturing of Turbine Blades by Laser Direct Deposition with Its Energy and Environmental Impact Analysis

J. Michael Wilson, Cecil Piya, Yung C. Shin, Fu Zhao, Karthik Ramani
Journal of Cleaner Production 80 (2014), 170 - 178
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3

HexaMorph: A Reconfigurable and Foldable Hexapod Robot Inspired by Origami

Wei Gao, Ke Huo, Jasjeet S. Seehra, Karthik Ramani, and Raymond J. Cipra
IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS'14) , Chicago, September, 2014
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ChiroBot

ChiroBot: Modular-Robotic Manipulation via Spatial Hand Gestures.

Jasjeet Singh Seehra, Ansh Verma and Karthik Ramani
Proceedings of the 2014 conference on Interaction design and children (IDC '14). ACM, New York, NY, USA, 209-212.
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FrameworkExample

PuppetX: A Framework for Gestural Interactions With User Constructed Playthings

Saikat Gupta, Sujin Jang, and Karthik Ramani
Proceedings of the ACM Conference on Advanced Visual Interfaces, May 27-30, Como, Italy. pp. 73-80, 2014
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comparison

Tracing and Sketching Performance using Blunt-tipped Styli on Direct-Touch Tablets

Sriram Karthik Badam, Senthil Chandrasegaran,Niklas Elmqvist, and Karthik Ramani
Proceedings of the ACM Conference on Advanced Visual Interfaces, May 27-30, Como, Italy. pp. 193-200, 2014
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FeatureImage

zPots : A Virtual Pottery Experience Through Spatial Interactions Using the Leap Motion Device

Vinayak, Karthik Ramani, Kevin Lee Jr., Raja Jasti
Proceedings of the ACM CHI' 14 Extended Abstracts on Human Factors in Computing System (CHI EA'14) April 26- May 1, Toronto, Canada.
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Chiron.

Chiron: Interpreting signals from Capacitive Patterns and Inertial Sensors for intuitive Shape Modeling.

Ansh Verma, Gabriel Culberston and Karthik Ramani
Proceeding of the ACM CHI' 14 Extended Abstracts on Human Factors in Computing System (CHI EA'14) April 26- May 1, Toronto, Canada. To appear, 2014.
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Figure: Detail of final robot illustration by an artist created using Juxtapoze while freely exploring (10 min). The task log shows substantial
time spent on edits and personalization of constituent shapes.

Juxtapoze: Supporting Serendipity and Creative Expression in Clipart Compositions

William Benjamin, Senthil Chandrasegaran, Devarajan Ramanujan, Niklas Elmqvist, SVN Vishwanathan, Karthik Ramani
Proceedings of the ACM Conference on Human Factors in Computing Systems, April 26 - May 1, Toronto, Canada. pp 341-350, 2014.
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teaser

skWiki: A Multimedia Sketching System for Collaborative Creativity

Zhenpeng Zhao, Sriram Karthik Badam, Senthil Chandrasegaran, Deok Gun Park, Niklas Elmqvist, Lorraine Kisselburgh, and Karthik Ramani
Proceedings of the ACM Conference on Human Factors in Computing Systems, April 26 - May 1, Toronto, Canada. pp. 1235-1244, 2014.
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AbstractionDiagram

Understanding Abstraction In Design: A Comparison of Three Functional Analysis Methods for Product Dissection

Joran Booth, Tahira Reid, Karthik Ramani
ASME IDETC/CIE 2013
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foursquare

Profiling Energy Consumption of Smartphone Users for Environmentally Efficient Business Decisions

William Z. Bernstein, Devarajan Ramanujan, Fu Zhao, Karthik Ramani
ASME IDETC/CIE 2013
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Treemap

shapeSift: Suggesting sustainable options in design reuse from part repositories

Devarajan Ramanujan, William Benjamin, William Z. Benstein, Niklas Elmqvist, Karthik Ramani
ASME IDETC/CIE 2013
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Flowchart of the analysis performed on text corpora from the discussions, representations, and reports from student brainstorming sessions

Understanding Brainstorming through Text Visualization

Senthil Chandrasegaran, Lorraine Kisselburgh, Karthik Ramani
ASME IDETC/CIE 2013
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scale

Multiscale Kernels using Random Walks

Karthik Ramani, Ayan Sinha
11th Symposium on Geometry processing, 3-5 July, Genova, Italy, 2013. Proceedings of the Computer Graphics Forum, Computer Graphics Forum, Volume 33, Issue 1, pages 164–177, 2014.
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Pirate2

Shape-It-Up: Hand Gesture Based Creative Expression of 3D Shapes Using Intelligent Generalized Cylinders

Vinayak, Sundar Murugappan, HaiRong Liu, Karthik Ramani,
Computer-Aided Design, Volume 45, Issue 2, February 2013, Pages 277-287, ISSN 0010-4485, 10.1016/j.cad.2012.10.011. (http://www.sciencedirect.com/science/article/pii/S0010448512002163)
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usd_touch_tumb

Extended Multitouch: Recovering Touch Posture & Identity Using Depth Cameras on a Pen+Touch Tabletop Interface

Sundar Murugappan, Vinayak, Niklas Elmqvist, Karthik Ramani
Proceedings of ACM Conference on User Interface Software and Technology, 2012
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Glove_rend6

ACTIVE-Hand: Automatic Configurable Tactile Interaction in Virtual Environment

You Wu, Lara Schmidt, Matthew Parker, John Strong, Michael Bruns, Vinayak Karthik Ramani
Proceedings of the ASME 2012 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference
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knowledge_representation

The evolution, challenges, and future of knowledge representation in product design systems

Senthil Chandrasegaran, Karthik Ramani, Ram D. Sriram, Imre Horvath, Alain Bernard, Ramy Harik, Wei Gao
Computer-Aided Design Volume 45, Issue 2, February 2013, Pages 204-228.
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mechatronics_modular_setup

A Proposed Platform to Simplify the Integration of Electronics into a Mechanical Engineering Design Course

Brett Skaloud, Senthil Chandrasegaran, Karthik Ramani
Proceedings of the ASME 2012 IDETC/CIE.
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me444_featured

Enhancing Visual Thinking in a Toy Design Course Using Freehand Sketching

Elkin Taborda, Senthil Chandrasegaran, Lorraine Kisselburgh, Tahira Reid, Karthik Ramani
Proceedings of the ASME 2012 IDETC/CIE.
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Figure12

Handy-Potter: Rapid 3D Shape Exploration Through Natural Hand Motions

Vinayak, Sundar Murugappan, Cecil Piya, Karthik Ramani
Proceedings of the ASME 2012 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2012, August 12-15, 2012, Chicago, Illinois, USA
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main-image_520

Kaleidogami: Multi-Primitive Reconfigurable Artistic Structures

Wei Gao and Karthik Ramani
Hyperseeing Spring 2012, Special Issue on Proceedings of SMI 2012 Fabrication and Sculpting Event
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material

Designing-in Sustainability by Linking Engineering Curricula with K-12 Science Projects

William Z. Bernstein, Arjun Ramani, Xiulin Ruan, Devarajan Ramanujan, and Karthik Ramani
Proceedings of the ASME 2012 IDETC/CIE.
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disassembly_network

Discovering Material Recovery Scenarios for Industrial Machinery

William Z. Bernstein, Devarajan Ramanujan, Mikko Koho, Fu Zhao, and Karthik Ramani
Proceedings of the 2012 ASME MSEC.
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critique_flowchart

Teaching Design for Environment through Critique within a Project Based Product Design Course

William Z. Bernstein, Devarajan Ramanujan, Fu Zhao, Monica F. Cox, and Karthik Ramani
IJEE: Special Issue on Design Centric Engineering Education, Vol. 28, No. 4, pp.1-12.
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