Tone mapping operators are designed to reproduce visibility and the overall impression of brightness, contrast color real world onto limited dynamic range displays printers. Although many tone have been published in recent years, no thorough psychophysical experiments yet undertaken compare such against scenes they purporting depict. In this paper, we present results a series validate six frequently used linearly mapped High Dynamic Range (HDR) displayed on novel HDR device. Individual...

In recent years many Tone Mapping Operators (TMOs) have been presented in order to display High Dynamic Range Images (HDRI) on typical devices. TMOs compress the luminance range while trying maintain contrast. The dual of tone mapping, inverse expands a Low Image (LDRI) into HDRI. HDRIs contain broader physical values that can be perceived by human visual system. majority today's media is stored low dynamic range. Inverse (iTMOs) could thus potentially revive all this content for use high...

Simulation fidelity is characterized as the extent to which a Virtual Environment (VE) and relevant interactions with it are indistinguishable from user's interaction real environment. The growing number of VE training applications target high level simulation fidelity, mainly for transfer in world, have made crucial examine manner these particular implementations designs evaluated. methodology presented this study focuses on versus simulated virtual worlds, comparing participants' presence,...

The perceived quality of computer graphics imagery depends on the accuracy rendered frames, as well capabilities human visual system. Fully detailed, high fidelity frames still take many minutes even hours to render today's computers. eye is physically incapable capturing a moving scene in full detail. We sense image detail only 2° foveal region, relying rapid movements, or saccades, jump between points interest. Our brain then reassembles these glimpses into coherent, but inevitably...

In the real world, human eye is confronted with a wide range of luminances from bright sunshine to low night light. Our eyes cope this vast intensities by adaptation; changing their sensitivity be responsive at different illumination levels. This adaptation highly localized, allowing us see both dark and regions high dynamic environment. paper we present new model based on physiological data. The model, which can easily integrated into existing renderers, function either as static local tone...

The computation of high-fidelity images in real-time remains one the key challenges for computer graphics. Recent work has shown that by understanding human visual system, selective rendering may be used to render only those parts which viewer is attending at high quality and rest scene a much lower quality. This can result significant reduction computational time, without being aware difference. Selective guided models typically form 2D saliency map, predict where user will looking any...

Abstract In the last few years, researchers in field of High Dynamic Range (HDR) Imaging have focused on providing tools for expanding Low (LDR) content generation HDR images due to growing popularity applications, such as photography and rendering via Image‐Based Lighting, imminent arrival displays consumer market. LDR expansion is required lack fast reliable level capture still videos. Furthermore, expansion, will allow re‐use legacy stills, videos applications created, over century more,...

This paper describes a methodology based on human judgments of memory awareness states for assessing the simulation fidelity virtual environment (VE) in relation to its real scene counterpart. To demonstrate distinction between task performance-based approaches and additional evaluation cognitive states, photorealistic VE was created. Resulting scenes displayed head-mounted display (HMD) with or without head tracking desktop monitor were then compared real-world situation they represented,...

Abstract In recent years research in the three‐dimensional sound generation field has been primarily focussed upon new applications of spatialized sound. computer graphics community use such techniques is most commonly found being applied to virtual, immersive environments. However, more varied and diverse than this other tackles problem a complete, computationally expensive manner. Furthermore, simulation light wave propagation still unachievable at physically accurate spatio‐temporal...

The ancient Egyptian temple of Kalabsha dates back to 30 BC. In 1963 the was dismantled and moved a new site in order save it from rising waters Lake Nasser. Computer graphics collaboration with Egyptologists makes possible recreate on computer, place its original location orientation, illuminate it, as may have appeared some 2000 years ago. Accuracy is highest importance such archaeological reconstructions when investigating how might past. Failure use fidelity means there very real danger...

There are two major influences on human visual attention: bottom-up and top-down processing. Bottom-up processing is the automatic direction of gaze to lively or colourful objects as determined by low-level vision. In contrast, consciously directed attention in pursuit predetermined goals tasks. Previous work perception-based rendering has exploited control detail (and therefore time) spent parts a scene. this paper, we demonstrate principle Inattentional Blindness, side effect processing,...

High-fidelity rendering of complex scenes at interactive rates is one the primary goals computer graphics. Since high-fidelity computationally expensive, perceptual strategies such as visual attention have been explored to achieve this goal. In paper we investigate how two models human can be exploited in a selective system. We examine their effects both individually, and combination, through psychophysical experiments measure savings computation time while preserving perceived quality for...

In this paper we introduce an algorithm and related methods that expand the contrast range of Low Dynamic Range (LDR) videos in order to regenerate missing High (HDR) data. For content generated from single exposure LDR sequences, is clearly under constrained problem. We achieved expansion by inverting established tone mapping operator, a process term inverse mapping. This approach augmented number which help luminance for required pixels while avoiding artifacts. These may be used convert...

The tools and standards of best practice adopted by natural science (NS) cultural heritage (CH) professionals will determine the digital future NS CH imaging work. This tutorial discusses emerging technologies explores issues influencing widespread adoption practices for CH. a possible through key concepts; surrogates, empirical (scientific) provenance, perpetual conservation, ‘born archival’ semantic knowledge management. multiple image based along with current research including;...

Serious games are playing an increasingly important role for training people about real world situations. A key concern is thus the level of realism that game requires in order to have accurate match what user can expect with they perceive virtual one. Failure achieve right runs risk may adopt a different reaction strategy than would be desired reality. High-fidelity, physically based rendering has potential deliver same perceptual quality image as if you were ldquothererdquo scene being...

The developers and users of interactive computer graphics (CG), such as 3D games virtual reality, are demanding ever more realistic generated imagery delivered at high frame rates, to enable a greater perceptual experience for the user. As computational power and/or transmission bandwidth not always available, special techniques applied that trade off fidelity in order reduce complexity, while trying minimise perceptibility resulting visual defects. Research on human perception has promoted...

Background One of the most mentioned problems web accessibility, as recognized in several different studies, is related to difficulty regarding perception what or not clickable a page. In particular, key problem recognition hyperlinks by specific group people, namely those with intellectual disabilities. Materials and Methods This experiment investigated methodology based on direct observation, video recording, interview data obtained an eye tracker device. Ten participants took part this...