Martin Falk

De senaste decennierna har polisens användning av tjänstevapen återkommande hamnat i fokus, inte minst efter ett antal uppmärksammade incidenter. Forskningen visar att skott ofta avlossas under stress, rädsla och svåra förhållanden, exempelvis under svaga ljusförhållanden och på korta avstånd. Dessa faktorer påverkar polisers perception, beslutsfattande och träffsäkerhet, vilket kan innebära risker för både allmänheten och poliserna själva. I denna rapport undersöker vi om ny teknologi i form av optiska riktmedel, så kallade rödpunktsikten, kan bidra till ökad säkerhet i situationer där polisen tvingas använda sitt vapen. Genom en explorativ experimentstudie jämförs optiska riktmedel med polisens traditionella öppna riktmedel för att undersöka om de kan stärka polisers informationsbearbetning och förbättra träffsäkerheten.

Prevalent types of data in scientific visualization are volumetric data, vector field data, and particle-based data. Particle data typically originates from measurements and simulations in various fields, such as life sciences or physics. The particles are often visualized directly, that is, by simple representants like spheres. Interactive rendering facilitates the exploration and visual analysis of the data. With increasing data set sizes in terms of particle numbers, interactive high-quality visualization is a challenging task. This is especially true for dynamic data or abstract representations that are based on the raw particle data. This book covers direct particle visualization using simple glyphs as well as abstractions that are application-driven such as clustering and aggregation. It targets visualization researchers and developers who are interested in visualization techniques for large, dynamic particle-based data. Its explanations focus on GPU-accelerated algorithms for high-performance rendering and data processing that run in real-time on modern desktop hardware. Consequently, the implementation of said algorithms and the required data structures to make use of the capabilities of modern graphics APIs are discussed in detail. Furthermore, it covers GPU-accelerated methods for the generation of application-dependent abstract representations. This includes various representations commonly used in application areas such as structural biology, systems biology, thermodynamics, and astrophysics.