För att skapa kraftfullare presentationer måste nya metoder implementeras för att visualisera projekt. Ett aktivitetshus för ungdomar visualiseras i detta projekt genom att 3D-modellen av huset placeras i ett filmklipp från den plats där huset skall stå. Stegen som togs för att realisera detta var förarbete i form av inskaffande av ritningar, filmande, matchmoving, 3D-modellering, rendering, compositing och ljuddesign. Resultatet blev ett filmklipp som ur ett första persons perspektiv både visar exteriören och interiören.

The acquisition of remote sensing data having an investigated quality level constitutes an important step to advance our understanding of the vegetation response to environmental factors. Spaceborne sensors introduce additional challenges that should be addressed to assure that derived findings are based on real phenomena, and not biased or misguided by instrument features or processing artifacts. As a consequence, updates to incorporate new advances and user requirements are regularly found on most cutting edge systems such as the MODIS system. In this dissertation, the objective was to design, characterize and assess any possible departure from current values, a MODIS VI algorithm for restoring the continuity 16-day 1-km product, based on the new 8-day 500-m MODIS SR product scheduled for MODIS C6. Additionally, the impact of increasing the time resolution from 16 to 8 days for the future basic MODIS C6 VI product was also assessed. The performance of the proposed algorithm was evaluated using high quality reference data and known biophysical relationships at several spatial and temporal scales. Firstly, it was evaluated using data from the ASRVN, FLUXNET-derived ecosystem GPP and an analysis of the seasonality parameters derived from current C5 and proxy C6 VI collections. The performance of the 8-day VI version was evaluated and contrasted with current 16-day using the reported correlation of the EVI with the GPP derived from CO2 flux measurements. Secondly, we performed an analysis at spatial level using entire images (or "tiles") to assess the BRDF effects on the VI product, as these can cause biases on the SR and VIs from scanning radiometers. Lastly, we evaluated the performance of the proposed algorithm for detecting inter-annual VI anomalies from long-term time series, as compared with current MODIS VI C5. For this, we analyzed the EVI anomalies from a densely vegetated evergreen region, for the period July-September (2000-2010). Results showed a high general similarity between results from both algorithms, but also systematic differences, suggesting that proposed algorithm towards C6 may represent an advance in the reduction of uncertainties for the MODIS VI product.

Cette thèse de doctorat est consacrée à la technique de l’incrustation. Il s'agit plus précisément d'analyser la portée anthropologique de cette pratique, afin de mettre en lumière une certaine disposition du cinéma spectaculaire actuel par l'étude des pratiques du passé en repérant les survivances et les interdépendances entre les maniements techniques, les représentations esthétiques et les transpositions narratives d’une forme à une autre. L’objet de cette thèse est donc de proposer un certain point de vue de la culture populaire et des techniques employées à la représentation d’un imaginaire de l’extraordinaire, c’est-à-dire d’un cinéma spectaculaire s’inscrivant dans une anthropologie des images et des techniques qui dépasse largement le cadre cinématographique. / This PhD thesis is a study on the techniques of insertion. Its subject is to analyze the anthropological reach of this practice, and thus to develop a particular tendency in modern-day spectacular cinema by the study of past practices, seen through the survivals and interdependencies between technical handlings, aesthetic representations and narrative transpositions of one shape or another. The object of this thesis is therefore to propose a particular point of view on mainstream culture and on the techniques used to represent an imaginary of the extraordinary, or in other words, of spectacular cinema, which remains in keeping with an anthropology of images and techniques that goes way beyond the field of cinema.

<p>För att skapa kraftfullare presentationer måste nya metoder implementeras för att visualisera projekt. Ett aktivitetshus för ungdomar visualiseras i detta projekt genom att 3D-modellen av huset placeras i ett filmklipp från den plats där huset skall stå. Stegen som togs för att realisera detta var förarbete i form av inskaffande av ritningar, filmande, matchmoving, 3D-modellering, rendering, compositing och ljuddesign. Resultatet blev ett filmklipp som ur ett första persons perspektiv både visar exteriören och interiören.</p>

<p>I dagens visuella effekter är digital compositing en av de viktigaste processerna. Från att uteslutande ha utförts i 2D har digital compositing dock kommit att innebära en alltmer tredimensionell process. Det här arbetet reder ut begreppet 3D-compositing och sammanställer vilka 3D-compositingtekniker som är vanligt förekommande. Ett urval av dessa tekniker tillämpas sedan i en egen effektsekvens. Slutsatsen blir att det är kombinationen av 3D-funkionalitet och 2D-compositing i samma program som är styrkan med digital compositing i 3D-miljö.</p>

Photorealism is what visual effects are all about most of the time. This report entails digital compositing and studio lighting, in relation to Chroma key film material, aimed to give a photorealistic impression.    One of the identified problems in this report is that compositors may get Chroma key footage where the lighting is done poorly, which means a lot of extra work for the compositors and it might even make it impossible to create the desired end result.    Another problem recognized is that the knowledge that these professions possess is often tacit, not available in texts or even functionally defined.    Considering these problems, the purpose of this report is to articulate and try the tacit knowledge found in respect to these research questions: Which factors can alter the photorealistic impression of filmed Chroma key material? To what extent can different factors be altered in the compositing process, for a photorealistic result? How can a photorealistic result from composited Chroma key material be enabled and facilitated, with focus on studio lighting?       Methods used to answer these questions are interviews with compositors, a case study of a small video production, and the production of video clips, including studio lighting and compositing.    While professionals often write about the importance of consistency in image characteristics between different element that are composited together, this report defines which specific features that ought to be consistent, for a photorealistic result.    Further findings are focused on the limitations of the compositor; i.e. the features that are possible to manipulate and the features that have to be set correctly when filming in the studio, to enable a photorealistic outcome. Nonetheless, the main focus will be on the features of lighting set in the Chroma key film studio.    In fact, there are many features that are crucial for enabling and facilitating the compositing of a photorealistic end product. While some of the findings are new, others confirm what has already been presented.

The visual appearance of an image is a complex function of factors such as scene geometry, material reflectances and textures, illumination, and the properties of the camera used to capture the image. Understanding how these factors interact to produce an image is a fundamental problem in computer vision and graphics. This dissertation examines two aspects of this problem: models of visual appearance that allow us to recover scene properties from images and videos, and tools that allow users to manipulate visual appearance in images and videos in intuitive ways. In particular, we look at these problems in three different applications. First, we propose techniques for compositing images that differ significantly in their appearance. Our framework transfers appearance between images by manipulating the different levels of a multi-scale decomposition of the image. This allows users to create realistic composites with minimal interaction in a number of different scenarios. We also discuss techniques for compositing and replacing facial performances in videos. Second, we look at the problem of creating high-quality still images from low-quality video clips. Traditional multi-image enhancement techniques accomplish this by inverting the camera’s imaging process. Our system incorporates feature weights into these image models to create results that have better resolution, noise, and blur characteristics, and summarize the activity in the video. Finally, we analyze variations in scene appearance caused by changes in lighting. We develop a model for outdoor scene appearance that allows us to recover radiometric and geometric infor- mation about the scene from images. We apply this model to a variety of visual tasks, including color-constancy, background subtraction, shadow detection, scene reconstruction, and camera geo-location. We also show that the appearance of a Lambertian scene can be modeled as a combi- nation of distinct three-dimensional illumination subspaces — a result that leads to novel bounds on scene appearance, and a robust uncalibrated photometric stereo method. / Engineering and Applied Sciences

I dagens visuella effekter är digital compositing en av de viktigaste processerna. Från att uteslutande ha utförts i 2D har digital compositing dock kommit att innebära en alltmer tredimensionell process. Det här arbetet reder ut begreppet 3D-compositing och sammanställer vilka 3D-compositingtekniker som är vanligt förekommande. Ett urval av dessa tekniker tillämpas sedan i en egen effektsekvens. Slutsatsen blir att det är kombinationen av 3D-funkionalitet och 2D-compositing i samma program som är styrkan med digital compositing i 3D-miljö.

Recent years have witnessed a significant change to vehicular user interfaces (UI). This is the result of increased functionality, triggered by the continuous proliferation of vehicular software and computer systems. The UI represents the integration point that must fulfil particular requirements for usability despite the increased functionality. A concurrent present trend is the substitution of federated systems with integrated architectures. The steadily rising number of interacting functional components and the increasing integration density implies a growing complexity that has an effect on system development. This evolution raises demands for concepts that aid the composition of such complex and interactive embedded software systems, operated within safety critical environments. This thesis explores the requirements related to composability of software components, based on the example of In-Car Multimedia (ICM). This thesis proposes a novel software architecture that provides an integration path for next-generation ICM. The investigation begins with an examination of characteristics, existing frameworks and applied practice regarding the development and composition of ICM systems. To this end, constructive aspects are identified as potential means for improving composability of independently developed software components that differ in criticality, temporal and computational characteristics. This research examines the feasibility of partitioning software components by exploitation of parallel hardware architectures. Experimental evaluations demonstrate the applicability of encapsulated scheduling domains. These are achieved through the utilisation of multiple technologies that complement each other and provide different levels of containment, while featuring efficient communication to preserve adequate interoperability. In spite of allocating dedicated computational resources to software components, certain resources are still shared and require concurrent access. Particular attention has been paid to management of concurrent access to shared resources to consider the software components' individual criticality and derived priority. A software based resource arbiter is specified and evaluated to improve the system's determinism. Within the context of automotive interactive systems, the UI is of vital importance, as it must conceal inherent complexity to minimise driver distraction. Therefore, the architecture is enhanced with a UI compositing infrastructure to facilitate implementation of a homogenous and comprehensive look and feel despite the segregation of functionality. The core elements of the novel architecture are validated both individually and in combination through a proof-of-concept prototype. The proposed integral architecture supports the development and in particular the integration of mixed-critical and interactive systems.

The integration of information from multiple geophysical and other prospection surveys of archaeological sites and regions leads to a richer and more complete understanding of subsurface content, structure, and physical relationships. Such fusions of information occur within a single geophysical data set or between two or more geophysical and other prospection sources in one, two, or three dimensions. An absolute requirement is the accurate coregistration of all information to the same coordinate space. Data integrations occur at two levels. At the feature level, discrete objects that denote archaeological features are defined, usually subjectively, through the manual digitization of features interpreted in the data, although there is growing interest in automated feature identification and extraction. At the pixel level, distributional issues of skewness and outliers, high levels of noise that obfuscate targets of interest, and a lack of correlation between largely independent dimensions must be confronted. Nevertheless, successful fusions occur using computer graphic methods, simple arithmetic combinations, and advanced multivariate methods, including principal components analysis and supervised and unsupervised classifications. Four case studies are presented that illustrate some of these approaches and offer advancement into new domains.