Ashish Gupta
Atlanta, GA, USA
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Summary
Summary
+ PhD in Computer Science with major in Computer Graphics from Georgia Tech
+ Siemens Inventor Of the Year 2022
+ State-of-the-art Geometry tools for DARPA’s Transformative Design (TRADES) project
+ 15 years of Industrial R&D / Software Development experience at GM, RENISHAW and SIEMENS
+ Multiple publications and patents.
+ Hands-on in JAVA, programming background in C/C++, Python.
Research interests
Research interests
Geometric Modeling; 3D-Printing/Additive-Manufacturing; Visual Aesthetics; Computational Geometry; Generative Design; Rendering, Image Synthesis/Processing; Computer Animation;
Work experience
Work experience
Staff Scientist
Staff Scientist
2021 Onwards
Senior Software Engineer
Senior Software Engineer
2020 - 2021
Software Engineering Specialist
Software Engineering Specialist
2012-2015
Senior Researcher
Senior Researcher
2005-2012
Academics
Academics
PhD
PhD
Computer Science
2015-2020
Masters
Masters
Mechanical Engineering
2003-2005
Undergrad
Undergrad
Mechanical Engineering
1998-2002
PhD Research Contributions
PhD Research Contributions
Design of Lattice Structures
Design of Lattice Structures
+ A new paradigm to define parametric lattices and to graphically interact with them.
+ Procedural model to define lattices with trillions of elements by a short program.
+ The lattice can be evaluated on demand in a region of interest.
+ The lattice can be designed to bend, twist and grade steadily.
+ Accelerated processing of lattice structures for geometric queries and integral properties.
QUADric Of Revolution (QUADOR) Beams for Lattice Structures
QUADric Of Revolution (QUADOR) Beams for Lattice Structures
+ Design of lattice beams with quadric surface profile.
+ Compared to traditional cylindrical or cone beams, these beams provide additional design freedom, while similarly easy to define and analyze.
Hybrid Representations and fast processing of Lattice Structures
Hybrid Representations and fast processing of Lattice Structures
+ Exact hybrid (CSG+CST+BRep) representations of lattices with cylinder, cone or quadric of revolution beams.
+ Algorithms to perform fast geometric queries on these lattices.
Convex Hull of Co-spherical Circles (CHoCC) and its application to lattices
Convex Hull of Co-spherical Circles (CHoCC) and its application to lattices
+ Exact boundary of the convex hull of disjoint oriented circles on a sphere.
+ Decomposition of lattice structures into an assembly of CHoCCs.
+ Watertight meshing of curved and bent lattice structures.
Hierarchical Lattices
Hierarchical Lattices
+ Hierarchical lattice structures.
+ Exceptional mechanical properties.
Conforming Lattices
Conforming Lattices
+ Conforming lattices structures along periodic implicit surfaces.
Smooth interpolations
Smooth interpolations
+ Smoothly varying interpolations between non-similar configurations.
+ Useful in designing aesthetically pleasing animations or mechanically strong structures.
Bent beams
Bent beams
+ Exploring the construction of beams with a curved spine for lattice structures.
+ May be useful in designing flexible materials or woven structures.
Projects
Projects
3D Printing / Additive Manufacturing
3D Printing / Additive Manufacturing
Renishaw
Development of core geometric algorithms to support additive manufacturing applications, e.g. mesh healing, slicing, slice correction to ensure manufacturability, scan path generation, contouring and skin region identification.
Optimized Tool Selection
Optimized Tool Selection
General Motors Research
Automatic and optimized selection of tools, such as weldguns for spot welding. Manufacturing requirements validation through geometric constraints.
Accelerated ray tracing
Accelerated ray tracing
Advance Image Synthesis
Implementation of a Ray Tracer from scratch, includes reflections, refraction, anti-aliasing, DOF, motion-blur, acceleration, distribution rays, texture mapping and photon mapping.
Shader Programming
Shader Programming
GPU Programming
Curvature based edge detection combined with DOF blurring using depth adaptive Gaussian Kernel.
Elastic Behavior Modeling
Elastic Behavior Modeling
Experimental
Assign specific behavior to a spring-mass system using a stiffness controller that can dynamically update stiffness of each spring in the system. For example change stiffness based on deformation, or along an orientation, or based on change in area of incident triangle or in general based on a scalar field.
Facegram
Facegram
Computational Photography
Android based app for identifying facial resemblance using skin tone, facial contour and relative size and positioning of facial features, such as eyes, nose and lips.
Weave Grammar
Weave Grammar
Shape Grammar
Shape grammar to create unit cells of 2D biaxial and triaxial weaves. The unit cells can then be translated trivially to create a repeating pattern of cells representing a weave.
Voronoi diagrams
Voronoi diagrams
Exploratory
Voronoi diagrams of points and of circles. Decomposition of a plane into discs, triangles and corridors.
Musical Painter
Musical Painter
Computational Aesthetics
A concept to paint a picture with the brush choosing color based on musical notes while tracking the multiple sound sources moving in space.
The Great Filter
Graphite pencil on paperThe Great Filter
Visual Arts and Geometry
The “Great Filter” is the name given to a hypothesized catastrophic event that stops the evolution of simple life forms into advance space travelling species. What if our “great filter” is our mind? The sketch depicts, a human mind acting like a black hole, curving the space-time around it, and not letting the truth pass through. And we like Pinocchio, have only lies to tell, without ever knowing the reality.
Papers
Papers
§ Sethuraman, N., Gupta A.(2011). A system for automated verification of manufacturing requirements for automotive sealant application. Int. Conf. on Trends in PLMSS, Coimbatore, India.
Patents / Patent Applications
Patents / Patent Applications
§ Quador: quadric-of-revolution beams for lattices
§ System and method for design and manufacture of steady lattice structures
§ System and method for designing multilevel lattice structures
§ Automatic estimation of weldgun size using section geometry
§ Multi goal path planning of welding robots with automatic sequencing
Courses
Courses
Computer Graphics, Computational Aesthetics, Shape Grammars, Visual Arts and Geometry, Advance Image Synthesis, Computational Photography, GPU programming, Computer Animation, Machine Learning, Artificial Intelligence.
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