Characteristics of flight simulator visual systems

The physical parameters of the flight simulator visual system that characterize the system and determine its fidelity are identified and defined. The characteristics of visual simulation systems are discussed in terms of the basic categories of spatial, energy, and temporal properties corresponding to the three fundamental quantities of length, mass, and time. Each of these parameters are further addressed in relation to its effect, its appropriate units or descriptors, methods of measurement, and its use or importance to image quality

Expanding Dimensionality in Cinema Color: Impacting Observer Metamerism through Multiprimary Display

Television and cinema display are both trending towards greater ranges and saturation of reproduced colors made possible by near-monochromatic RGB illumination technologies. Through current broadcast and digital cinema standards work, system designs employing laser light sources, narrow-band LED, quantum dots and others are being actively endorsed in promotion of Wide Color Gamut (WCG). Despite artistic benefits brought to creative content producers, spectrally selective excitations of naturally different human color response functions exacerbate variability of observer experience. An exaggerated variation in color-sensing is explicitly counter to the exhaustive controls and calibrations employed in modern motion picture pipelines. Further, singular standard observer summaries of human color vision such as found in the CIE’s 1931 and 1964 color matching functions and used extensively in motion picture color management are deficient in recognizing expected human vision variability. Many researchers have confirmed the magnitude of observer metamerism in color matching in both uniform colors and imagery but few have shown explicit color management with an aim of minimized difference in observer perception variability. This research shows that not only can observer metamerism influences be quantitatively predicted and confirmed psychophysically but that intentionally engineered multiprimary displays employing more than three primaries can offer increased color gamut with drastically improved consistency of experience. To this end, a seven-channel prototype display has been constructed based on observer metamerism models and color difference indices derived from the latest color vision demographic research. This display has been further proven in forced-choice paired comparison tests to deliver superior color matching to reference stimuli versus both contemporary standard RGB cinema projection and recently ratified standard laser projection across a large population of color-normal observers

A projective approach to computer-aided drawing

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Architecture, 2001.Includes bibliographical references (p. 92-95).I present a novel drawing system for composing and rendering perspective scenes. The proposed approach uses a projective two-dimensional representation for primitives rather than a conventional three-dimensional description. This representation is based on points that lie on the surface of a unit sphere centered at the viewpoint. It allows drawings to be composed with the same ease as traditional illustrations, while providing many of the advantages of a three-dimensional model. I describe a range of user-interface tools and interaction techniques that give the drawing system its three-dimensional-like capabilities. The system provides vanishing point guides and perspective grids to aid in drawing freehand strokes and composing perspective scenes. The system also has tools for intuitive navigation of a virtual camera, as well as methods for manipulating drawn primitives so that they appear to undergo three-dimensional translations and rotations. The new representation also supports automatic shading of primitives using either realistic or non-photorealistic styles. My system supports drawing and shading of extrusion surfaces with automatic hidden surface removal and emphasized silhouettes. Casting shadows from an infinite light source is also possible with minimal user intervention. I describe a method for aligning a sketch drawn outside the system using its vanishing points, allowing the integration of computer sketching and freehand sketching on paper in an iterative manner. Photographs and scanned drawings are applied to drawing primitives using conventional texture-mapping techniques, thereby enriching drawings and providing another way of incorporating hand-drawn images. I demonstrate the system with a variety of drawings.by Osama S. Tolba.Ph.D

Radiant Sites: Projection and the Mobile Spectator in Contemporary Moving-Image Installations

This dissertation examines contemporary moving-image installations that use projected images to expand and elaborate upon the cinematic experience. It focuses on works by Douglas Gordon (b. 1966), Jim Campbell (b. 1956), and the partnered artists Janet Cardiff (b. 1957) and George Bures-Miller (b. 1960), all of whom have reconfigured the classical cinematic system of viewing since the 1990s. Through their works, I trace the term “expanded cinema” as a literal extension of projected light from the screen into the open gallery and beyond. I argue that the term “projection” – as thrown light, mental anticipation, and moving bodies – brings together cinema’s apparatus, text, and reception as a cohesive experience. These artists transport their light-based images to the gallery, exposing the projected image to mobile spectators, as well as to lighting conditions less conducive to a clear picture. However, the works I will discuss also maintain an explicit connection to the theatrical projection of narrative film. As these artists expand the exhibition spaces of cinema from theater to gallery, they also converge numerous cinematic formats, including celluloid film, magnetic videotape, digital video, still photography, and dynamic audio. I offer “projection” as a term which tethers the myriad trajectories of cinema’s expansion back to its apparatus, and even to the mobile spectator. Beyond the light phenomenon, I also draw from psychoanalytic theories of projection, especially relevant given its foundational contribution to film theory since the 1970s by authors such as Laura Mulvey, Christian Metz, and Mary Ann Doane. Furthermore, the “suture” theory of Kaja Silverman and others offers a link between classical Hollywood editing conventions and the spatial orientation of the gallery spectator. From these theorists, I ultimately offer a notion of the projecting viewer, a physically active version of the “embodied viewer” as conceived by phenomenological film theorist Vivian Sobchack. By observing their similarities to the common multiplex, art house, or even living rooms, these otherwise uprooted screens reveal in fleeting flickers traces of what we might intuitively call “the cinematic.

High-precision grasping and placing for mobile robots

This work presents a manipulation system for multiple labware in life science laboratories using the H20 mobile robots. The H20 robot is equipped with the Kinect V2 sensor to identify and estimate the position of the required labware on the workbench. The local features recognition based on SURF algorithm is used. The recognition process is performed for the labware to be grasped and for the workbench holder. Different grippers and labware containers are designed to manipulate different weights of labware and to realize a safe transportation

Inventing Cinema

With machines mediating most of our cultural practices, and innovations, obsolescence and revivals constantly transforming our relation with images and sounds, media feel more unstable than ever. But was there ever a ‘stable’ moment in media history? *Inventing Cinema* proposes to approach this question through an archaeology and epistemology of media machines. The archaeology analyses them as archives of users’ gestures, as well as of modes of perception. The epistemology reconstructs the problems that the machines’ designers and users have strived to solve, and the network of concepts they have elaborated to understand these problems. Drawing on the philosophy of technology and anthropology, *Inventing Cinema* argues that networks of gestures, problems, perception and concepts are inscribed in vision machines, from the camera obscura to the stereoscope, the Cinématographe, and digital cinema. The invention of cinema is ultimately seen as an ongoing process irreducible to a single moment in history

Study of time-lapse processing for dynamic hydrologic conditions

The usefulness of dynamic display techniques in exploiting the repetitive nature of ERTS imagery was investigated. A specially designed Electronic Satellite Image Analysis Console (ESIAC) was developed and employed to process data for seven ERTS principal investigators studying dynamic hydrological conditions for diverse applications. These applications include measurement of snowfield extent and sediment plumes from estuary discharge, Playa Lake inventory, and monitoring of phreatophyte and other vegetation changes. The ESIAC provides facilities for storing registered image sequences in a magnetic video disc memory for subsequent recall, enhancement, and animated display in monochrome or color. The most unique feature of the system is the capability to time lapse the imagery and analytic displays of the imagery. Data products included quantitative measurements of distances and areas, binary thematic maps based on monospectral or multispectral decisions, radiance profiles, and movie loops. Applications of animation for uses other than creating time-lapse sequences are identified. Input to the ESIAC can be either digital or via photographic transparencies

Shadows and Light. Ernie Gehr Exhibitions at the Museum of Modern Art

This thesis examines exhibitions and media installations of Ernie Gehr’s work at The Museum of Modern Art (MoMA), beginning with the pivotal 1970 show Information, which presented four films by Gehr. Wait (1968), Transparency (1969), Reverberation (1969), and History (1970) were screened alongside work by other avant-garde filmmakers and video artists in a circular viewing booth in the gallery space, in a show featuring works now considered masterpieces of conceptual art. It also considers the two site-specific video works, MoMA on Wheels (2002) and Navigation (2002), which Gehr created for the lobby space at MoMA QNS, the temporary home for the museum during construction for a major expansion project. Finally it explores Gehr’s two major solo exhibitions, Panoramas of the Moving Image: Mechanical Slides and Dissolving Views from Nineteenth-Century Magic Lantern Shows from 2007, and Carnival of Shadows from 2015. Descriptive analysis of each film or installation, inflected with methodologic devices of film history, art history, and philosophy, grounds discussion of the works within the surrounding context of the Museum