A macrotile estimation algorithm is introduced to estimate the covariance of locally stationary processes. A macrotile algorithm uses a penalized method to optimize the partition of the space in orthogonal subspaces, and the estimation is computed with a projection operator. It is implemented by searching for a best basis among a dictionary of orthogonal bases and by constructing an adaptive se...

This paper describes an implementation of a tool for visualizing and interacting with huge information hierarchies, and some preliminary empirical evaluation of the tool’s efficacy. Existing systems for visualizing huge hierarchies using cone trees ‘‘break down” once the hierarchy to be displayed exceeds roughly 1000 nodes, due to increasing visual clutter. This paper describes a system called ...

This paper presents a unified approach to automatically build dynamic and multi-resolution 360° panoramic (DMP) representations from image sequences captured by hand-held cameras mainly undertaking rotation and zooming for natural scenes with moving targets. A simple (yet stable) rigid motion model and a closed-loop-based mosaicing algorithm are proposed to generate cylindrical mosaics automati...

The successful implementation of adaptive finite element methods based on a posteriori error estimates depends on several ingredients: an a posteriori error indicator, a refinement/coarsening strategy, and the choice of various parameters. The objective of the paper is to examine the influence of these factors on the performance of adaptive finite element methods for a model problem: the linear...

Palmprint Recognition Under Unconstrained Scenes p. 1 Comparative Studies on Multispectral Palm Image Fusion for Biometrics p. 12 Learning Gabor Magnitude Features for Palmprint Recognition p. 22 Sign Recognition Using Constrained Optimization p. 32 Image and Video Processing Depth from Stationary Blur with Adaptive Filtering p. 42 Three-Stage Motion Deblurring from a Video p. 53 Near-Optimal M...