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公开(公告)号：US10681321B2
公开(公告)日：2020-06-09
申请号：US16156890
申请日：2018-10-10
Applicant: Nvidia Corporation
Inventor： Yanbo Sun , Gennady Petrov , Lauri Hyvarinen , Weiwan Liu , Dong Han Ryu
Abstract: The present disclosure is directed to a process to partially or fully suppress, or limit, pixel coloration errors. These pixel coloration errors, represented by small noise values, can be introduced during signal processing of high dynamic range (HDR) video signals. Converting visual content to a half precision floating point representation, for example, FP16, can introduce small amounts of signal noise due to value rounding. The noise can be multiplied and accumulated during HDR signal processing resulting in visual artifacts and degraded image quality. The disclosure can detect these noise amounts in pixel color component values, and suppress, or partially suppress, the noise to prevent the noise from accumulating during subsequent HDR signal processing.
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公开(公告)号：US11372548B2
公开(公告)日：2022-06-28
申请号：US16888116
申请日：2020-05-29
Applicant: NVIDIA Corporation
Inventor： Ram Rangan , Patrick Richard Brown , Wishwesh Anil Gandhi , Steven James Heinrich , Mathias Heyer , Emmett Michael Kilgariff , Praveen Krishnamurthy , Dong Han Ryu
Abstract: Some systems compress data utilized by a user mode software without the user mode software being aware of any compression taking place. To maintain that illusion, such systems prevent user mode software from being aware of and/or accessing the underlying compressed states of the data. While such an approach protects proprietary compression techniques used in such systems from being deciphered, such restrictions limit the ability of user mode software to use the underlying compressed forms of the data in new ways. Disclosed herein are various techniques for allowing user-mode software to access the underlying compressed states of data either directly or indirectly. Such techniques can be used, for example, to allow various user-mode software on a single system or on multiple systems to exchange data in the underlying compression format of the system(s) even when the user mode software is unable to decipher the compression format.
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公开(公告)号：US20210373774A1
公开(公告)日：2021-12-02
申请号：US16888116
申请日：2020-05-29
Applicant: NVIDIA Corporation
Inventor： Ram Rangan , Patrick Richard Brown , Wishwesh Anil Gandhi , Steven James Heinrich , Mathias Heyer , Emmett Michael Kilgariff , Praveen Krishnamurthy , Dong Han Ryu
Abstract: Some systems compress data utilized by a user mode software without the user mode software being aware of any compression taking place. To maintain that illusion, such systems prevent user mode software from being aware of and/or accessing the underlying compressed states of the data. While such an approach protects proprietary compression techniques used in such systems from being deciphered, such restrictions limit the ability of user mode software to use the underlying compressed forms of the data in new ways. Disclosed herein are various techniques for allowing user-mode software to access the underlying compressed states of data either directly or indirectly. Such techniques can be used, for example, to allow various user-mode software on a single system or on multiple systems to exchange data in the underlying compression format of the system(s) even when the user mode software is unable to decipher the compression format.
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公开(公告)号：US20200068181A1
公开(公告)日：2020-02-27
申请号：US16156890
申请日：2018-10-10
Applicant: Nvidia Corporation
Inventor： Yanbo Sun , Gennady Petrov , Lauri Hyvarinen , Weiwan Liu , Dong Han Ryu
Abstract: The present disclosure is directed to a process to partially or fully suppress, or limit, pixel coloration errors. These pixel coloration errors, represented by small noise values, can be introduced during signal processing of high dynamic range (HDR) video signals. Converting visual content to a half precision floating point representation, for example, FP16, can introduce small amounts of signal noise due to value rounding. The noise can be multiplied and accumulated during HDR signal processing resulting in visual artifacts and degraded image quality. The disclosure can detect these noise amounts in pixel color component values, and suppress, or partially suppress, the noise to prevent the noise from accumulating during subsequent HDR signal processing.
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