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

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.

Abstract: A new visibility graph based algorithm is presented for computing the inner distances of a 3D shape represented by a volumetric model. The inner distance is defined as the length of the shortest path between landmark points within the...

Implementing Design Critique for Teaching Sustainable Concept Generation

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.

Abstract:  Product design is one of the most important activities that can influence sustainability. Therefore, it is critical to educate students about these methodologies as they are the next generation of engineers. This paper details a study...

Virtual Repair: Geometric Reconstruction for Remanufacturing Gas Turbine Blades

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

Abstract: The usage of Direct Metal Deposition (DMD) technology for repairing defective voids in high-value metallic components is time consuming, since traditional geometric reconstruction methods are not seamlessly connected to the DMD process....

Towards Enabling Visual Design Exploration Involving Multiple Abstractions of Design Descriptions

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)

Abstract: Designers use several visual tools for exploring and understanding design problems and solutions. House of Quality (HoQ), function-structure, Morphological matrices, concept selection tables, 2D drawings are some of the visual tools and...

HeatWalk: Robust Salient Segmentation of Non-rigid Shapes

HeatWalk: Robust Salient Segmentation of Non-rigid Shapes

William Benjamin, Andrew Wood Polk, S. V. N. Vishwanathan, and Karthik Ramani
Computer Graphics Forum Volume 30 (2011), Number 7 Pages 2097-2106

Authors: William Benjamin , Andrew Wood Polk , S. V. N. Vishwanathan , and Karthik Ramani Published in: Computer Graphics Forum Vol: 30 (7). 2011, Pages 2097-2106 Abstract: Segmenting three dimensional objects using properties of heat diffusion on...

sLLE: Spherical Locally Linear Embedding with Applications to Tomography

sLLE: Spherical Locally Linear Embedding with Applications to Tomography

Yi Fang, S.V.N. Vishwanathan, Mengtian Sun, and Karthik Ramani
Published in IEEE Computer Vision and Pattern Recognition (CVPR), pp 1077-1129, 2011

Abstract: The tomographic reconstruction of a planar object from its projections taken at random unknown view angles is a problem that occurs often in medical imaging. Therefore, there is a need to robustly estimate the view angles given random...

Temperature Distribution Descriptor for Robust 3D Shape Retrieval

Temperature Distribution Descriptor for Robust 3D Shape Retrieval

Yi Fang, Mengtian Sun, and Karthik Ramani
4th Workshop on Non-Rigid Shape Analysis and Deformable Image Alignment (NORDIA'11). 2011 IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)

Abstract: Recent developments in acquisition techniques are resulting in a very rapid growth of the number of available three dimensional (3D) models across areas as diverse as engineering, medicine and biology. It is therefore of great interest to...

APIX: Analysis from Pixellated Inputs in Early Design Using a Pen-based Interface

APIX: Analysis from Pixellated Inputs in Early Design Using a Pen-based Interface

Sundar Murugappan, Vinayak, Karthik Ramani, and Maria. C. Yang
Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2011, Washington, DC, USA

Abstract: Product development is seeing a paradigm shift in the form of a simulation-driven approach. Recently, companies and designers have started to realize that simulation has the biggest impact when used as a concept verification tool in early...

Global Geometric Affinity for Revealing High Fidelity Protein Interaction Network

Global Geometric Affinity for Revealing High Fidelity Protein Interaction Network

Yi Fang, William Benjamin, Mengtian Sun, and Karthik Ramani
PLoS ONE 6(5): e19349.

Abstract: Protein-protein interaction (PPI) network analysis presents an essential role in understanding the functional relationship among proteins in a living biological system. Despite the success of current approaches for understanding the PPI...

Heat-Mapping: A Robust Approach Toward Perceptually Consistent Mesh Segmentation

Heat-Mapping: A Robust Approach Toward Perceptually Consistent Mesh Segmentation

Yi Fang, Mengtian Sun, Minhyong Kim, and Karthik Ramani
IEEE Computer Vision and Pattern Recognition (CVPR), pp 2145-2152, 2011

Abstract: 3D mesh segmentation is a fundamental low-level task with applications in areas as diverse as computer vision, computer-aided design, bio-informatics, and 3D medical imaging. A perceptually consistent mesh segmentation (PCMS), as defined...