Perception‐driven Accelerated Rendering

Advances in computer graphics enable us to create digital images of astonishing complexity and realism. However, processing resources are still a limiting factor. Hence, many costly but desirable aspects of realism are often not accounted for, including global illumination, accurate depth of field a...

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Bibliographic Details
Published in:Computer graphics forum 2017-05, Vol.36 (2), p.611-643
Main Authors: Weier, M., Stengel, M., Roth, T., Didyk, P., Eisemann, E., Eisemann, M., Grogorick, S., Hinkenjann, A., Kruijff, E., Magnor, M., Myszkowski, K., Slusallek, P.
Format: Article
Language:English
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Categories and Subject Descriptors (according to ACM CCS)
Computer graphics
Depth of field
Digital computers
Digital imaging
Display devices
I.3.3 [Computer Graphics]: Picture/Image Generation—Line and curve generation
Image processing systems
Pixels
Realism
Rendering
Visual perception
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Summary:Advances in computer graphics enable us to create digital images of astonishing complexity and realism. However, processing resources are still a limiting factor. Hence, many costly but desirable aspects of realism are often not accounted for, including global illumination, accurate depth of field and motion blur, spectral effects, etc. especially in real‐time rendering. At the same time, there is a strong trend towards more pixels per display due to larger displays, higher pixel densities or larger fields of view. Further observable trends in current display technology include more bits per pixel (high dynamic range, wider color gamut/fidelity), increasing refresh rates (better motion depiction), and an increasing number of displayed views per pixel (stereo, multi‐view, all the way to holographic or lightfield displays). These developments cause significant unsolved technical challenges due to aspects such as limited compute power and bandwidth. Fortunately, the human visual system has certain limitations, which mean that providing the highest possible visual quality is not always necessary. In this report, we present the key research and models that exploit the limitations of perception to tackle visual quality and workload alike. Moreover, we present the open problems and promising future research targeting the question of how we can minimize the effort to compute and display only the necessary pixels while still offering a user full visual experience.
ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.13150