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NVIDIA : Patent Issued for Physiologically Based Adaptive Image Generation (USPTO 9773473)

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10/05/2017 | 11:42pm CET

By a News Reporter-Staff News Editor at Investment Weekly News -- NVIDIA Corporation (Santa Clara, CA) has been issued patent number 9773473, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventors are Gallo, Orazio (Santa Cruz, CA); Pulli, Kari Antero (Palo Alto, CA); Jacobs, David Edward (Westlake Village, CA).

This patent was filed on May 26, 2015 and was published online on September 26, 2017.

From the background information supplied by the inventors, news correspondents obtained the following quote: "The human visual system can operate in a wide range of illumination levels, due to several adaptation processes working in concert. For the most part, these adaptation mechanisms are transparent, leaving the observer unaware of his or her absolute adaptation state. At extreme illumination levels, however, some of these mechanisms produce perceivable secondary effects, or epiphenomena. In bright light, these secondary effects include bleaching afterimages and adaptation afterimages, while in dark conditions these include desaturation, loss of acuity, mesopic hue shift, and the Purkinje effect.

"Standard displays, such as computer monitors, can reproduce only a fraction of the dynamic range typically encountered in natural environments. Images and videos viewed on conventional displays, therefore, generally do not engage the luminance adaptation mechanisms that the visual system regularly undergoes in real environments. For a display to realistically reproduce the visual experience of high-dynamic-range (HDR) content, it would be desirable to also reproduce the visual experience associated with adapting to a wide dynamic range.

"One way to tackle this problem is to design monitors that support larger bit-depths and maximum brightnesses (i.e., luminances), thus placing the burden of performing adaptation on the observer's visual system. However, aside from the complications of turning such prototypes into commercial products, some limitations are inherently unsolvable; e.g., if very bright objects are displayed with proportionally strong radiances on the screen, the viewer may experience discomfort. Moreover, such strategies only address the case of very bright scenes, whereas a display accurately reproducing an extremely low-light scene could only be viewed in total darkness, as any ambient light would prevent the viewer from completely adapting to the display.

"Thus, there is a need for addressing these issues and/or other issues associated with the prior art."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventors' summary information for this patent: "A system, computer-readable medium, and method are provided for generating images based on an adaptation of the human visual system. An input image is received, an effect provoking change is received, and an afterimage resulting from a cumulative effect of human visual adaptation is computed based on the effect provoking change and a per-photoreceptor type physiological adaptation of the human visual system. The computed afterimage may include a bleaching afterimage effect and/or a local adaptation afterimage effect. The computed afterimage is then accumulated into an output image for display."

For the URL and additional information on this patent, see: Gallo, Orazio; Pulli, Kari Antero; Jacobs, David Edward. Physiologically Based Adaptive Image Generation. U.S. Patent Number 9773473, filed May 26, 2015, and published online on September 26, 2017. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9773473.PN.&OS=PN/9773473RS=PN/9773473

Keywords for this news article include: NVIDIA Corporation, Technology Companies, Semiconductor - Specialized Companies.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2017, NewsRx LLC

(c) 2017 NewsRx LLC, source Business Newsletters

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