We present tools to visualize density, clustering, and lethality assessment that help a military commander achieve situation awareness (SA) on the battlefield. For the density computation, we provide a geometry-based, image-based, and hybrid approach to tackle the problem. We choose proximity-based clustering as a suitable definition for our application. Based on this clustering definition, we ...

In this paper we present a new technique for visualizing multidimensional information. We describe objects of a higher dimensional information space as small closed free-form-surfaces in the visualization. The location, size and shape of these surfaces describe the original objects in information space uniquely. The underlying enhanced spring model is introduced. The technique is applied to two...

In this paper, we revisit the Lagrangian accumulation process that aggregates the local attribute information along integral curves for vector field visualization. Similar to the previous work, we adopt the notation of the Lagrangian accumulation field or A field for the representation of the accumulation results. In contrast to the previous work, we provide a more in-depth discussion on the pr...

The computer-assisted investigation of flow data can be eased by the visualization of topological information about the flow. Especially, when empirical models or numerical results from flow simulation are investigated, often the first step of analysis is to search structural elements, like fixed points, separatrices, etc. The work presented in this paper focuses on the visualization of 3D dyna...

Spot noise is a technique for texture synthesis, which is very useful for vector field visualization. This paper describes improvements and extensions of the basic principle of spot noise. First, better visualization of highly curved vector fields with spot noise is achieved, by adapting the shape of the spots to the local velocity field. Second, filtering of spots is proposed to eliminate unde...

For each search result presented by a search engine, a user has a choice to click through for more information or to skip the result. We aim to improve the accuracy of this click process by introducing a color-coding scheme built upon our improved summary text selection approach called ReClose. Color-coding adds an additional level of context to the text without requiring additional screen spac...

W e read with interest the article by van der Jagt et al 1 describing the visualization of the scala media of the cochlea in living human subjects by non-contrast-enhanced T2-weighted imaging at 7T. For recognition of the scala media with this technique , visualization of the Reissner membrane is necessary. The Reissner membrane is very thin, 4 –12 ␮m. 2 Visualization of this thin membrane in a...

The problem which must be solved to make realtime enhanced reality visualization possible is basically the camera calibration problem. The relationship between the coordinate frames of the patient, the patient's internal anatomy scans and the image plane of the camera observing the patient must be established. This paper presents a new approach to nding this relationship and develops a system f...

Background and Importance: The extent of resection seems a solid prognostic factor in patients suffering from high-grade gliomas (HGGs). When administered orally, 5-ALA is exclusively converted by malignant cells into protoporphyrin IX (PPIX), identifying contrast-enhancing glial lesions under blue 400-nm light. The authors thoroughly assess the efficacy, accuracy, and safety profile of 5-ALA-g...