Det här arbetet har berört visualisering av nybyggda bostäder, där ljussättning av interiör över tid har varit centralt. Ett problem bland svenska företags visualiseringar har uppdagas i form av att de är bristfälliga i sin information om dagsljus. Användare som intresserar sig för en bostad och som tar del av visualiseringar av denne, går därmed miste om information om hur bostaden ser ut under olika tider på dygnet samt olika tider på året. Sådan information om dagsljus kan vara av stort intresse för användare som till exempel köper en nybyggd bostad innan de först kan se den fysiskt. Bland de åtgärder som utförts för att skapa bättre visualiseringar, finns förslaget att använda animation för att visa flödet av dagsljus i en interiör. Ett realistiskt bildmanér framställt i programvaran 3D Studio Max användes vid gestaltningen. Detta eftersom det har haft fördelar såsom att realistiskt kunna illustrera ljusförhållanden. I gestaltningsarbetet har en nybyggnation i Eskilstuna visualiserats. Totalt har tolv olika klipp på nybyggnationens interiör framställts, ett klipp för varje månad på året. I varje klipp visas dagsljusets flöde i interiören under en 24 timmars period. De visar på cirka tio sekunder, att solen går upp tills att solen går ner, och interiörens ljusförhållanden där emellan.

I detta examensarbete har gråbalansstyrning och ICC-profilers duglighet undersökts. ICC-profilernahar utvärderats utifrån den tryckkvalitet de genererat tillsammans med olika papper.Gråbalansstyrning har använts som gemensamma likare för samtliga testtryckningar. Detta tillfördeen variabel som var lika för samtliga papper i utredningen. Här med ökade sannolikheten att ICCprofilerskapade från olika papper, skulle ge en likvärdig kvalitet.I arbetet har många mätningar och beräkningar genomförts. De två främsta anledningarna till dettavar dels att utreda i vilken mån det gick att gråbalansjustera trycket och dels att inhämta jämförbaravärden på likheter och divergenser mellan olika kombinationer av ICC-profiler och papper. Mätdatahjälpte även till att ta hänsyn till de felkällor som fanns.Det var möjligt att gråbalansjustera trycket och det fanns likheter mellan en ICC-profil på olika papperoch även mellan fler ICC-profiler på samma papper. Samtliga resultat och slutsatser var beroendeav att neutral gråbalans upprätthölls under tryckningarna. Subjektiva och objektiva jämförelser visadebåda på att en ICC-profil inte kommer att påverkas av variationer mellan olika pappersleveranser,såvida dessa inte är större än skillnaden mellan de olika papperna.Med säkerhet kunde inte förutsägas från vilket papper en ICC-profil skulle skapas för att ge en högkvalitet på flera papper. Mest troligt var att likvärdigt resultat skulle kunna uppnås på G-Print, MultiArt Matt och Multi Art Silk.

Adjustment to a neutral colour balance when printing was the starting point in this degree project. Onthis base ICC-profiles were evaluated and assessed. The survey was concentrated on the similarity betweenreproductions on different papers with various ICC-profiles. The colour balancing introduced aconsistent variable between four graphic papers. With raised uniformity the probability increased toreceive similarities between the various combinations of ICC-profiles and papers.Numerous of measurements and calculations have been carried out, mainly to confirm whether or notadjustment to a neutral colour balance is possible and repeatable. Further more this gained in comparablevalues corresponding to similarities and divergences between combinations of ICC-profiles andpaper.The research concluded in the fact that it was possible to reach a neutral colour balance. One ICCprofileused together with various papers and also one paper with several ICC-profiles resulted in similaritiesand formed groups of samples. Since equivalent results could be reached on different samples,it implicated that variations within one paper shouldn’t affect the ICC-profiles. This was valid when thevariations were less than the divergence between the papers.Certain predictions on the question of from which paper the ICC-profiles should be generated to createhighest quality in print hasn’t been able to assemble. It’s likely that equivalent results could begenerated on G-Print, Multi Art Matt and Multi Art Silk.

Image rendering is the process of creating realistic computer images from  geometric models and physical laws of light and reflection. This master thesis deals mainly with the numerical intricacies of implementing an image renderer using spherical harmonics. It investigates how to calculate the reflection of light in a surface using the Phong model, and employs ray tracing to create a realistic image of a geometric model. Further, it investigates different ways of calculating the spherical harmonic representation of a function defined on the sphere. The thesis also deals with the implementation of self-shadowing, and the effects of adding this component to the rendering equation.

Dendritic or branching structures are commonly seen in natural phenomena such as lightning, cracking and vegetal growth. They are also often used for artistic or decorative purposes, ranging from ornamentation to decorative ceramics. Existing procedural methods for modeling these structures remain very limited in terms of control and flexibility. As a result, these objects tend to be modeled individually, which is a painstaking and costly process.<p>We present a new procedural method for modeling dendritic structures based on a path planning approach. Our method includes the implementation of a partial non-scalar distance metric that gives us effective and flexible control handles over the evolving dendritic structure. These control handles are demonstrated by guiding the growth of dendritic structures using input images, allowing us to create a form of stylistic dendritic halftoning and to embed hidden images in dendritic trees to create pareidolia effects. These applications demonstrate the vast diversity of structures that can easily be modeled by our process a flexibility that existing methods definitely lack. We also demonstrate the application of the partial non-scalar distance metric to the context of texture synthesis from example, and show how it holds promise for many other contexts.

There currently exist several techniques for selecting and combining images from a digital image library into a single image so that the result meets certain prespecified visual criteria. Image mosaic methods, first explored by Connors and Trivedi[18], arrange library images according to some tiling arrangement, often a regular grid, so that the combination of images, when viewed as a whole, resembles some input target image. Other techniques, such as Autocollage of Rother et al.[78], seek only to combine images in an interesting and visually pleasing manner, according to certain composition principles, without attempting to approximate any target image. Each of these techniques provide a myriad of creative options for artists who wish to combine several levels of meaning into a single image or who wish to exploit the meaning and symbolism contained in each of a large set of images through an efficient and easy process. We first examine the most notable and successful of these methods, and summarize the advantages and limitations of each. We then formulate a set of goals for an image collage system that combines the advantages of these methods while addressing and mitigating the drawbacks. Particularly, we propose a system for creating photocollages that approximate a target image as an aggregation of smaller images, chosen from a large library, so that interesting visual correspondences between images are exploited. In this way, we allow users to create collages in which multiple layers of meaning are encoded, with meaningful visual links between each layer. In service of this goal, we ensure that the images used are as large as possible and are combined in such a way that boundaries between images are not immediately apparent, as in Autocollage. This has required us to apply a multiscale approach to searching and comparing images from a large database, which achieves both speed and accuracy. We also propose a new framework for color post-processing, and propose novel techniques for decomposing images according to object and texture information.

This thesis presents a new cross-platform graphics performance tool, GPTT (Graphics Performance Tuning Tool), which is designed for helping developers to find the performance bottleneck of their games or applications on embedded systems. The functions of performance tool are embedded into the standard graphics library, OpenGL ES, to achieve cross-platform. In order to verify the proposed tool, we also implement the OpenGL ES specification in addition to the tool itself. The performance tool is separated into visualization part and measurement part from which it successfully decreases the load in embedded system, while running the application. Via the tool it identifies many bottlenecks that can be improved.

Includes bibliographical references (p. 114-123).

Title from title page of PDF (University of Missouri--St. Louis, viewed February 23, 2010). Includes bibliographical references (p. 33-35).

Includes bibliographical references (p. 51-57).