Viz Projects


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Viz Projects

  1. 1. Projects in Visualization Cartik S. Sharma
  2. 2. Virtual Factory Project Virtual Reality and Synthetic Manufacturing Laboratory, University at Buffalo Cellular formation of machines within the factory floor Simulation of part flow between machines Provide a walkthrough mode for the operator to navigate the virtual factory environment for inspection and decision making.
  3. 3. Walkthrough environment for machine layout on factory shop floor.
  4. 4. A HAPTICS AND GRAPHICS BASED DECISION MAKING ENVIRONMENT Optimization Engine   Our mission is to apply Virtual and Synthetic Engineering tools towards achieving an integrated haptics and graphic framework for simulation-based optimization of Manufacturing and Design Systems . Graphical Feedback Haptic Feedback Optimum The graph in the above figure shows three trials for the placement of the blocks. One set of experiments is complete when an optimal solution is reached. The designer makes a decision using the color of the blocks, relative size and visual and haptic cues. Users strongly prefer a combination of both haptic effects and the graph for decision making. Input Variable Proposed module for Haptics based integrated visualization environment 1000 HZ 30 HZ   Clearly the interaction between the computation, visualization and haptic loop decides performance measure and has to be carefully studied.
  5. 5. HAPTIC EXPLORATION OF DESIGN SPACES Immersive haptic environment; the haptic load viewer (bottom left) giving the scene complexity. Exported VRML <ul><li>The figure shows a module developed for haptic exploration of design spaces. </li></ul><ul><li>The idea here is to guide the user to the optimum using attractive and repulsive force effects. </li></ul><ul><li>Haptic exploration avoids dynamically changing scene graphs which increases computation time for rendering graphics. </li></ul><ul><li>Applications using Haptics for cognitive tasks </li></ul><ul><li>Virtual Prototyping </li></ul><ul><li>Product Design and Development. </li></ul><ul><li>Decision Support Software </li></ul><ul><li>Simulating machining operations </li></ul><ul><li>Error detection in finite element analysis. </li></ul><ul><li>Heuristic Optimization. </li></ul>
  6. 6. Atlantis Compnents Inc. (Makers of custom abutments)‏ Implementation of feature extraction algorithm to obtain accurate position of dental abutment. STL component slicing of lower jaw model for improved visualization. Virtual inspection process prior to actual manufacture of dental abutment. Lower jaw scan, stereolithography model
  7. 7. Z-KAT Inc. (Makers of image guided surgery software)‏ Minimally invasive surgical procedures. Improved accuracy and shorter OR times. Enhanced decision support system for the surgeon.
  8. 8. External fixation of the elbow using image guided and imageless techniques Calculate center of rotation of the elbow using Optical trackers within submillimetric accuracy. Provide a means to place the external fixator on the elbow. Compute postoperative range of motion for the elbow after the fixator has been placed. Center of rotation of the elbow
  9. 9. Conformal voxel spectroscopy Approach: (Ryner et al.)‏ Intensity based segmentation of brain tumors 3D reconstruction of tumor surface using quad strips Mesh decimation to progressively reduce number of planes for optimal saturation planes around the tumor surface Problem: Specify a set of optimal saturation planes around the tumor to maximize spectral response from tumor tissue as compared to surrounding healthy tissue.
  10. 10. Image segmentation
  11. 11. Conformal Voxel Spectroscopy National Research Council of Canada
  12. 12. VSM Medtech Ltd (Magnetoencaphalography manufacturers)‏ Cortical surface segmentation Interpolation of the cortical surface using spherical harmonics Improved source localization accuracy for MEG devices. MEG scanner Cortical surface Courtesy, Brainvisa