Karthik Ramani

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

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.

Sketcholution: Interaction Histories for Sketching

Zhenpeng Zhao, William Benjamin, Niklas Elmqvist, Karthik Ramani

International Journal of Human-Computer Studies, 82 (2015) 11-20

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.

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

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

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

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

In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (pp. V003T04A013-V003T04A013). American Society of Mechanical Engineers.

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

Joran W. Booth, Abhinav K. Bhasin, Tahira Reid, Karthik Ramani

In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (pp. V003T04A009-V003T04A009). American Society of Mechanical Engineers.

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

Contextualizing Environmental Sustainability in Design Engineering Curricula

Devarajan Ramanujan, William Z. Bernstein, Monica Cardella, Karthik Ramani

In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (pp. V003T04A025-V003T04A025). American Society of Mechanical Engineers.

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

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.

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

ViSER: Visualizing supply chains for eco-conscious redesign

William Z. Bernstein, Devarajan Ramanujan, Niklas Elmqvist, Fu Zhao, Karthik Ramani

ASME Paper No. DETC2014-34960.

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

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

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.

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

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

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.

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.

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.

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

Joran Booth, Tahira Reid, Karthik Ramani

ASME IDETC/CIE 2013

Profiling Energy Consumption of Smartphone Users for Environmentally Efficient Business Decisions

William Z. Bernstein, Devarajan Ramanujan, Fu Zhao, Karthik Ramani

ASME IDETC/CIE 2013

Best Paper Award by the American Society of Mechanical Engineers (ASME)

Devarajan Ramanujan, William Benjamin, Â and William Z. Bernstein along with Professors’ Niklas Elmqvist and Karthik Ramani were awarded the 2013 Design for Manufacturing and… Continue reading...

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

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

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 164â€“177, 2014.

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)

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

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

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.

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.

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.

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

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

Makers’ Faire 2012

In 2012, our lab represented Purdue for the first time at the annual Makers’ Faire in San Mateo, California. We taught sketching workshops for well… Continue reading...

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.

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.

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.

Center-Shift: An Approach Towards Automatic Robust Mesh Segmentation (ARMS)

Mengtian Sun , Yi Fang , and Karthik Ramani

IEEE Computer Vision and Pattern Recognition (CVPR), 2012

ME 444: Redesigning a Toy Design Course.

Elkin Taborda, Senthil Chandrasegaran and Karthik Ramani

Proceedings of TMCE 2012, May 7Ã¢â‚¬â€œ11, 2012, Karlsruhe, Germany, edited by I. HorvÃƒÂ¡th and Z. RusÃƒÂ¡k, A. Albers and M. Behrendt.

Towards locally and globally shape-aware reverse 3D modeling

Manish Goyal, Sundar Murugappan, Cecil Piya, William Benjamin, Yi Fang, Min Liu, Karthik Ramani

Computer-Aided Design, Volume 44, Issue 6, June 2012, Pages 537-553

3DMolNavi: A web-based retrieval and navigation tool for flexible molecular shape comparison

Yu-Shen Liu, Meng Wang, Jean-Claude Paul and Karthik Ramani

Published in BMC Bioinformatics 2012, 13:95

Computing the Inner Distances of Volumetric Models for Articulated Shape Description with a Visibility Graph

Yu-Shen Liu, Karthik Ramani, Min Liu

IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI), 2011, 23(12): 2538-2544.

First place in Ecological Sciences and Engineering Symposium Poster Competition

Ph.D students Willam Bernstein, Devarajan Ramanujan and Professor Karthik Ramani won 1st Place in the 2011 Ecological Sciences and Engineering Symposium (ESE) Graduate Student Poster… Continue reading...

Implementing Design Critique for Teaching Sustainable Concept Generation

William Z. Bernstein, Devarajan Ramanujan, Monica F. Cox, Fu Zhao, John W. Sutherland, and Karthik Ramani

Proceedings of the 18th International Conference on Engineering Design (ICED11), Vol. 8, pp. 55-65.

Virtual Repair: Geometric Reconstruction for Remanufacturing Gas Turbine Blades

Cecil Piya, J. Michael Wilson, Sundar Murugappan, Yung Shin, and Karthik Ramani

Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Design for Manufacturing and the Life Cycle Conference IDETC/DFMLC 2011 August 29 - 31, 2011, Washington, DC, USA

Towards Enabling Visual Design Exploration Involving Multiple Abstractions of Design Descriptions

Srikanth Devanathan , Karthik Ramani

Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2011 August 28-31, 2011, Washington, DC, USA (Best Paper Award)