This article reviews our research activities in the area of optical mammography and relates them to the historical developments and the current state and trends in the field. The guiding threads for this article are the roles played in optical mammography by spatial and spectral information. The first feature, spatial information, is limited by the diffusive nature of light propagation but can ...

Spectral Textures are rendered by multi-layer texturing, where each layer provides a certain band of spatial frequencies for the final texture. Transparency channels introduce statistical dependencies between the layers. Figures 1 shows series of screenshots that illustrate the multilayer approach of spectral texturing. The left column shows the single texture layers, increasing in scale from t...

Spectral information can be used for many CAD system tasks including synthesis, veriication and test vector generation. AND/OR graphs are also useful for representing functions in CAD systems since they can ooer advantages with respect to storage and representation of incompletely speciied relations. We analyze the problem of extracting spectral information from AND/OR graphs. It is shown that ...

let ‎x be an ‎‎n-‎‎‎‎‎‎square complex matrix with the ‎cartesian decomposition ‎‎x = a + i ‎b‎‎‎‎‎, ‎where ‎‎a ‎and ‎‎b ‎are ‎‎‎n ‎‎times n‎ ‎hermitian ‎matrices. ‎it ‎is ‎known ‎that ‎‎$vert x vert_p^2 ‎leq 2(vert a vert_p^2 + vert b vert_p^2)‎‎‎$, ‎where ‎‎$‎p ‎‎geq 2‎$‎ ‎and ‎‎$‎‎vert . vert_p$ ‎is ‎the ‎schatten ‎‎‎‎p-norm.‎ ‎‎ ‎‎in this paper‎, this inequality and some of its improvements ...

Programs that process secret data may inadvertently reveal information about those secrets in their publicly-observable output. This paper presents LeakWatch, a quantitative information leakage analysis tool for the Java programming language; it is based on a flexible “point-to-point” information leakage model, where secret and publiclyobservable data may occur at any time during a program’s ex...

The impact of results from Information Theory on todays information technology is illustrated by means of derivations from capacity formula and chain rule. By this, the huge possible increase in power and bandwidth efficiency for transmission of analog source signals via modern digital communication techniques is enlightened. The foundations of modern approaches like OFDM, CDMA, coded modulatio...

The power spectrum of galaxy clusters is an important probe of the cosmological model. In this paper, we develop a formalism to compute the optimal weights for the estimation of the matter power spectrum from cluster power spectrum measurements. We find a closedform analytic expression for the optimal weights, which takes into account: the cluster mass, finite survey volume effects, survey mask...

Bellman’s optimality principle is a method for solving problems where one needs to find best decisions one after another. The principle can be extended to assess the information leakage in multi-threaded programs, and is formalized into the optimum leakage principle hereby proposed in this paper. By modeling the state transitions in multithreaded programs, the principle is combined with informa...

We investigate the cosmological Fisher information in the non-linear dark-matter power spectrum in the context of the halo model. We find that there is a plateau in information content on translinear scales which is generic to all cosmological parameters we tried. There is a rise in information on smaller scales, but we find that it is quite degenerate among different cosmological parameters (e...

Information leakage is a growing public concern. This paper describes a visualization system for tracing leaks involving confidential information. In particular, the system enables administrators to determine which hosts have confidential documents and the means by which confidential information is transmitted, received and duplicated. The visualization system is scalable to large organizations...