Evaluating methods for controlling depth perception in stereoscopic cinematography.

Existing stereoscopic imaging algorithms can create static stereoscopic images with perceived depth control function to ensure a compelling 3D viewing experience without visual discomfort. However, current algorithms do not normally support standard Cinematic Storytelling techniques. These techniques, such as object movement, camera motion, and zooming, can result in dynamic scene depth change within and between a series of frames (shots) in stereoscopic cinematography. In this study, we empirically evaluate the following three types of stereoscopic imaging approaches that aim to address this problem. (1) Real-Eye Configuration: set camera separation equal to the nominal human eye interpupillary distance. The perceived depth on the display is identical to the scene depth without any distortion. (2) Mapping Algorithm: map the scene depth to a predefined range on the display to avoid excessive perceived depth. A new method that dynamically adjusts the depth mapping from scene space to display space is presented in addition to an existing fixed depth mapping method. (3) Depth of Field Simulation: apply Depth of Field (DOF) blur effect to stereoscopic images. Only objects that are inside the DOF are viewed in full sharpness. Objects that are far away from the focus plane are blurred. We performed a human-based trial using the ITU-R BT.500-11 Recommendation to compare the depth quality of stereoscopic video sequences generated by the above-mentioned imaging methods. Our results indicate that viewers' practical 3D viewing volumes are different for individual stereoscopic displays and viewers can cope with much larger perceived depth range in viewing stereoscopic cinematography in comparison to static stereoscopic images. Our new dynamic depth mapping method does have an advantage over the fixed depth mapping method in controlling stereo depth perception. The DOF blur effect does not provide the expected improvement for perceived depth quality control in 3D cinematography. We anticipate the results will be of particular interest to 3D filmmaking and real time computer games

Interaction and Expressivity in Video Games: Harnessing the Rhetoric of Film

The film-maker uses the camera and editing creatively, not simply to present the action of the film but also to set up a particular relation between the action and the viewer. In 3D video games with action controlled by the player, the pseudo camera is usually less creatively controlled and has less effect on the player’s appreciation of and engagement with the game. This paper discusses methods of controlling games by easy and intuitive interfaces and use of an automated virtual camera to increase the appeal of games for users

DocuDrama

This paper presents an approach combining concepts of virtual storytelling with cooperative processes. We will describe why storytelling is relevant in cooperation support applications. We will outline how storytelling concepts provide a new quality for groupware applications. Different prototypes illustrate a combination of a groupware application with various storytelling components in a Theatre of Work

Symbolic Activities in Virtual Spaces

This paper presents an approach to combine concepts ofsymbolic acting and virtual storytelling with the support ofcooperative processes. We will motivate why symboliclanguages are relevant in the social context of awarenessapplications. We will describe different symbolicpresentations and illustrate their application in three differentprototypes

Thinking like a director: Film editing paterns for virtual cinematographic storytelling

International audienceThis paper introduces Film Editing Patterns (FEP), a language to formalize film editing practices and stylistic choices found in movies. FEP constructs are constraints, expressed over one or more shots from a movie sequence that characterize changes in cinematographic visual properties such as shot sizes, camera angles, or layout of actors on the screen. We present the vocabulary of the FEP language, introduce its usage in analyzing styles from annotated film data, and describe how it can support users in the creative design of film sequences in 3D. More specifically, (i) we define the FEP language, (ii) we present an application to craft filmic sequences from 3D animated scenes that uses FEPs as a high level mean to select cameras and perform cuts between cameras that follow best practices in cinema and (iii) we evaluate the benefits of FEPs by performing user experiments in which professional filmmakers and amateurs had to create cinematographic sequences. The evaluation suggests that users generally appreciate the idea of FEPs, and that it can effectively help novice and medium experienced users in crafting film sequences with little training

Perceived Depth Control in Stereoscopic Cinematography

Despite the recent explosion of interest in the stereoscopic 3D (S3D) technology, the ultimate prevailing of the S3D medium is still significantly hindered by adverse effects regarding the S3D viewing discomfort. This thesis attempts to improve the S3D viewing experience by investigating perceived depth control methods in stereoscopic cinematography on desktop 3D displays. The main contributions of this work are: (1) A new method was developed to carry out human factors studies on identifying the practical limits of the 3D Comfort Zone on a given 3D display. Our results suggest that it is necessary for cinematographers to identify the specific limits of 3D Comfort Zone on the target 3D display as different 3D systems have different ranges for the 3D Comfort Zone. (2) A new dynamic depth mapping approach was proposed to improve the depth perception in stereoscopic cinematography. The results of a human-based experiment confirmed its advantages in controlling the perceived depth in viewing 3D motion pictures over the existing depth mapping methods. (3) The practicability of employing the Depth of Field (DoF) blur technique in S3D was also investigated. Our results indicate that applying the DoF blur simulation on stereoscopic content may not improve the S3D viewing experience without the real time information about what the viewer is looking at. Finally, a basic guideline for stereoscopic cinematography was introduced to summarise the new findings of this thesis alongside several well-known key factors in 3D cinematography. It is our assumption that this guideline will be of particular interest not only to 3D filmmaking but also to 3D gaming, sports broadcasting, and TV production

Mosaic narrative a poetics of cinematic new media narrative

This thesis proposes the Poetics of Mosaic Narrative as a tool for theorising the creation and telling of cinematic stories in a digital environment. As such the Poetics of Mosaic Narrative is designed to assist creators of new media narrative to design dramatically compelling screen based stories by drawing from established theories of cinema and emerging theories of new media. In doing so it validates the crucial element of cinematic storytelling in the digital medium, which due to its fragmentary, variable and re-combinatory nature, affords the opportunity for audience interaction. The Poetics of Mosaic Narrative re-asserts the dramatic and cinematic nature of narrative in new media by drawing upon the dramatic theory of Aristotle’s Poetics, the cinematic theories of the 1920s Russian Film Theorists and contemporary Neo-Formalists, the narrative theories of the 1960s French Structuralists, and the scriptwriting theories of contemporary cinema. In particular it focuses on the theory and practice of the prominent new media theorist, Lev Manovich, as a means of investigating and creating a practical poetics. The key element of the Poetics of Mosaic Narrative is the expansion of the previously forgotten and undeveloped Russian Formalist concept of cinematurgy which is vital to the successful development of new media storytelling theory and practice. This concept, as originally proposed but not elaborated by Kazansky, encompasses the notion of the creation of cinematic new media narrative as a mosaic – integrally driven by the narrative systems of plot, as well as the cinematic systems of visual style created by the techniques of cinema- montage, cinematography and mise-en-scene