Ziyi Zheng and Klaus Mueller are with the Center for Visual Computing, Computer Science, Stony Brook University, Stony Brook, NY 11790 USA (phone: 631-632-1524; e-mail: {zizhen, mueller}@cs.sunysb.edu). Funding was provided by NSF grant EAGER 1050477. Abstract—Neighborhood denoising filters are powerful techniques in image processing and can effectively enhance the image quality in CT reconstru...

Universities, because of their vast human and fiscal resources, can play the central role in assisting in the development of school-centered community development programs that make youth development their top priority. The Futures Academy, a K-8 public school in the Fruit Belt, an inner-city neighborhood in Buffalo, New York, offers a useful model of community development in partnership with t...

Focus-group and photo-voice methodology were used to identify the salient factors of the neighborhood environment that encourage or discourage walking in older, urban African Americans. Twenty-one male (n = 2) and female (n = 19) African Americans age 60 years and older (M = 70 +/- 8.7, range = 61-85) were recruited from a large urban senior center. Photographs taken by the participants were us...

This paper presents a variational level set method for simultaneous segmentation and bias field estimation of medical images with intensity inhomogeneity. In our model, the statistics of image intensities belonging to each different tissue in local regions are characterized by Gaussian distributions with different means and variances. According to maximum a posteriori probability (MAP) and Baye...

We apply a heuristic method based on counting points over finite fields to the Poincaré center problem. We show that this method gives the correct results for homogeneous non linearities of degree 2 and 3. Also we obtain some new information about general degree 3 non linearities. Introduction In 1885 Poincaré asked when the differential equation y = − x+ p(x, y) y + q(x, y) =: − P (x, y) Q(x, ...

In this article, a recursion formula for computing the singular point quantities of the infinity in a class of quintic polynomial systems is given. The first eleven singular point quantities are computed with the computer algebra system Mathematica. The conditions for the infinity to be a center are derived as well. Finally, a system that allows the appearance of eleven limit cycles in a small ...

The design of a CCD-based codec preprocessor integrated with an areal imager is presented. The imager is a 256x256 buried channel frame transfer device with 15x15 um2pixels. Conventionally, imagers deliver pixel data in a raster-scan sequential format. Typical of many image processing tasks, the image coding scheme used in our lossless compression algorithm requires 3x3 pixel neighborhood block...

We apply a heuristic method based on counting points over finite fields to the Poincaré center problem. We show that this method gives the correct results for homogeneous non linearities of degree 2 and 3. Also we obtain new evidence for Żo la̧dek’s conjecture about general degree 3 non linearities. Introduction In 1885 Poincaré asked when the differential equation y = − x+ p(x, y) y + q(x, y) =...

We analyze the dynamics of a two-dimensional cellular automaton, 2D Minority, for the Moore neighborhood (eight neighbors per cell) under fully asynchronous dynamics (where only one random cell updates at each time step). Even if 2D Minority seems a simple rule, from the experience of Ising models and Hopfield nets, it is known that models with negative feedback are hard to study. This automato...