This research explores the differences between how game engine cameras and the human visual system (HVS) render colour. The study is motivated by a two part research question: will HVS colours or game camera colours be preferred when experiencing a virtual environment from a 1st-person perspective and how does light intensity relate to preference? While previous research defines perceptual processes which influence the interpretation of colour information this study advances the understanding of how these theories may be applied to 3D colour grading.When evaluating the two colour modes with a combination of quantitative data and qualitative reflections it was possible to establish a correlation between preference and light intensity, in the sense that HVS colours were preferred in high illumination and camera colours in low. The findings implicate that in order to be well received the colours of a virtual environment need to be adjusted according to illumination.

Sound is an important aspect of storytelling. Previous studies have investigated the emotional perceptions of knocking sounds, in relation to the colour and material of the door. This study will build on these projects and investigate two new visual factors, colour grading and the speed at which a door opens, to determine how they affect emotional perception in isolation, and then how they interfere with five expressive knocking sounds. This was done by conducting four experiments. The first two experiments investigated the emotional perception of the visual factors. In the last two experiments, the visual factors were combined with the expressive knocking sounds, in order to investigate how the conveyed emotions of these visual factors interfered with the perceived emotions of the knocking sounds. The results showed that the knocking sounds had the strongest influence over the overall perceived emotion. However, the colour gradings were able to influence and interfere with the perceived emotion of the knocking sounds, while the door opening speeds did not have an effect. / Ljud är en viktig del i historieberättande. Tidigare studier har utforskat den känslomässiga uppfattningen av ljud i form av knackningsljud, samt hur dörrens färg och material påverkar den uppfattningen. Den här studien bygger på dessa projekt och utforskar två andra visuella faktorer i form av färgsättning (colour grading) och hastigheten en dörr öppnas med. Den känslomässiga uppfattningen av dessa faktorer undersöks, samt hur de påverkar fem knackningsljud med avsedda känslor. Det här undersöktes med hjälp av fyra experiment. I de två första experimenten undersöktes den känslomässiga uppfattningen av de två visuella faktorerna enskilt. I de två sista experimenten, kombinerades de visuella faktorerna seperat med de fem knackningsljuden. Här undersöktes det hur de känslorna som förmedlades av de visuella faktorerna påverkade de förmedlade känslorna av knackningsljuden. Resultatet visade på att knackningsljuden hade mest influens över den övergripande uppfattade känslan. Däremot så influerade och påverkade färgsättningen den uppfattade känslan av knackningsljuden, medan dörrhastigheten inte gjorde det.

The topic of this thesis project is multimedia processing, focusing on the user-sided adjustment of RGB values in video streaming using Just-In-Time (JIT) techniques and the Media Lovin’ Toolkit (MLT) framework. This is implemented in Codemill’s Accurate Player and using Web Real-Time Communication (WebRTC) as a data channel. Colour theory and RGB colour representation are discussed and technical details on the structure and usage of the MLT framework are provided. The first part of the research question aims to evaluate the feasibility of the real-time colour adjustment. This research question is answered positively by providing an implementation that can address real-world use cases. A comparison of different MLT filters is included, to select the most suitable filter for the RGB adjustment. The second part of the research question considers the comparison of video colour grading results with MLT filters that were applied on different platforms: The Accurate Player, the command line video editor Melt and the editing software KDEN Live. For this, frames of the different platforms were extracted and subtracted from each other to show differences in the colour saturations. The results reveal that the Accurate Player plays back the original video more accurately than the Melt framework. Additionally, the results lead to the assumption that KDEN Live is not using the same Melt filter as the Accurate Player to adjust the RGB values. Those significant differences in the compared frames show the complexity of the topic of colour adjustment and representation.