The field of three-dimensional computer graphics has long focused on the problem of synthesizing images from geometric models. These geometric models, in combination with surface descriptions characterizing the reflective properties of each element, represent the scene that is to be rendered. Computationally, the classical computer-graphics image synthesis process is a simulation problem in whi...

When a camera rotates rapidly or shakes severely, a conventional KLT (Kanade–Lucas–Tomasi) feature tracker becomes vulnerable to large inter-image appearance changes. Tracking fails in the KLT optimization step, mainly due to an inadequate initial condition equal to final image warping in the previous frame. In this paper, we present a gyro-aided feature tracking method that remains robust unde...

Respiratory motion during acquisition of first-pass myocardial perfusion images results in translation, distortion from out-of-plane motion, and changes in left ventricular geometry. Together these effects make visual image analysis more difficult and limit methods of quantitative analysis of contrast kinetics. We present a fully automated registration and warping algorithm for correcting trans...

Ukiyo-e is a multi-woodblock color print and an important historical and cultural heritage from the Edo period in Japan. An Ukiyo-e print is produced with three processes: drawing by an E-shi, a painter or a designer; woodblocks engraving by a Hori-shi, an engraving technician; and printing by a Suri-shi, a printing technician. The produced prints from the same woodblocks are not exactly the sa...

Texture mapping of 3D digitized data is a challenge. This arises mainly due to two factors: i) digitization of geometry and ii) digitization of textures. First, due to digitization of geometry we have a basket of polygons that represent the digitized object. Second, due to digitization of textures, we get another basket of textures that represent the digitized texture of the whole object. Unfor...

Designing Optimal Parallel Volume Rendering Algorithms by Craig Michael Wittenbrink Chairperson of the Supervisory Committee: Professor Arun K. Somani Department of Electrical Engineering and Department of Computer Science and Engineering Volume rendering is a method for visualizing volumes of sampled data such as CT, MRI, and finite element simulations. Visualization of medical and simulation ...

Learning approaches have shown great success in the task of super-resolving an image given a low resolution input. Video superresolution aims for exploiting additionally the information from multiple images. Typically, the images are related via optical flow and consecutive image warping. In this paper, we provide an end-to-end video superresolution network that, in contrast to previous works, ...

This paper presents deformable templates as a tool for segmentation and localization of biological structures in medical images. Structures are represented by a prototype template, combined with a parametric warp mapping used to deform the original shape. The localization procedure is achieved using a multi-stage, multi-resolution algorithm designed to reduce computational complexity and time. ...