Parallel computing can be of critical importance to the deterministic solution of radiation transport equations, especially with respect to solving the transport process within highly variable media with complex geometries. We propose an approach that extends the Alternating Direction of Transport Sweeps (ADTS) method of M. Yavus and E.D. Larson to unstructured triangular grids, using the Recur...

In this paper we present a method for illuminating a dynamic scene with a high dynamic range environment map with real-time or interactive frame rates, taking into account self shadowing. Current techniques require static geometry (pre-computed light transport), are limited to few and small area lights or are limited in the frequency of the shadows. We facilitate importance sampling of the envi...

Introduction Formulation of spatial RF pulse design in a gradient-dependent rotating frame is introduced. This work was motivated by the need for a fast RF design algorithm for use in a high-field parallel transmit system where dielectric effect creates transmit field distribution with significant patientdependent variability. The new reference frame, called a “local rotating frame”, transforms...

To be able to statistically compare evolutions of image timeseries data requires a method to express these evolutions in a common coordinate system. This requires a mechanism to transport evolutions between coordinate systems: e.g., parallel transport has been used for largedisplacement diffeomorphic metric mapping (LDDMM) approaches. A common purpose to study evolutions is to assess local tiss...

To be able to statistically compare evolutions of image timeseries data requires a method to express these evolutions in a common coordinate system. This requires a mechanism to transport evolutions between coordinate systems: e.g., parallel transport has been used for largedisplacement diffeomorphic metric mapping (LDDMM) approaches. A common purpose to study evolutions is to assess local tiss...

We propose to compute a vector eld, similar to the optical ow computed between successive frames of an image sequence, which maps optimally (in a certain sense) one face image onto another face image. A cost of the mapping is computed and used to quantify the dissimilarity between the two images. The technique is applied to the problem of person identiication by comparing an input face image to...

This paper presents a hierarchical image transformation and efficient parallel algorithms for its evaluation. This transformation maps image structures onto code trees of different height, depending on the size of the structure. Thereby, important structures are effectively separated from the background. The inherent parallelism of such a hierarchical image transformation is outlined. The algor...

We propose the first approach for decomposition of a monocular color video into direct and indirect illumination components in real time. retrieve, separate layers, contribution made to scene appearance by reflectance, light sources reflections from various coherent regions one another. Existing techniques that invert global transport require image capture under multiplexed controlled lighting,...