Patents by Inventor Dung Trung Vo
Dung Trung Vo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11836901Abstract: One embodiment provides a method comprising determining metadata corresponding to an input image, determining a black level of a display device and a peak luminance value of the display device, and determining a tone mapping function that adaptively compensates for the black level of the display device based on the metadata, the black level of the display device, and the peak luminance value of the display device. The metadata comprises a distribution of luminance values in the input image. The black level of the display device and the peak luminance value of the display device represent a lowest luminance value and a highest luminance value, respectively, achievable on the display device. The method further comprises applying the tone mapping function to the input image to generate a tone-mapped image that adaptively compensates for the black level of the display device and provided to the display device for presentation.Type: GrantFiled: November 7, 2022Date of Patent: December 5, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chenguang Liu, William Mandel, Dung Trung Vo, McClain C. Nelson, Soojung Hyun
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Publication number: 20230351562Abstract: One embodiment provides a method comprising receiving, as input, standard dynamic range (SDR) content, and obtaining statistics information corresponding to the SDR content. The method further comprises determining, based on the statistics information, one or more parameters for an inverse tone mapping (ITM) curve using a machine learning model. The method further comprises converting the SDR content to high dynamic range (HDR) content using the ITM curve. The resulting HDR content is provided to a display device for presentation.Type: ApplicationFiled: April 21, 2023Publication date: November 2, 2023Inventors: Bowen Zhao, Chenguang Liu, Dung Trung Vo, McClain Craig Nelson, Chang Su
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Publication number: 20230120505Abstract: One embodiment provides a method comprising determining metadata corresponding to an input image, determining a black level of a display device and a peak luminance value of the display device, and determining a tone mapping function that adaptively compensates for the black level of the display device based on the metadata, the black level of the display device, and the peak luminance value of the display device. The metadata comprises a distribution of luminance values in the input image. The black level of the display device and the peak luminance value of the display device represent a lowest luminance value and a highest luminance value, respectively, achievable on the display device. The method further comprises applying the tone mapping function to the input image to generate a tone-mapped image that adaptively compensates for the black level of the display device and provided to the display device for presentation.Type: ApplicationFiled: November 7, 2022Publication date: April 20, 2023Inventors: Chenguang Liu, William Mandel, Dung Trung Vo, McClain C. Nelson, Soojung Hyun
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Publication number: 20230039667Abstract: One embodiment provides a method comprising receiving an input content, and receiving ambient contextual data indicative of one or more ambient lighting conditions of an environment including a display device. The input content has corresponding metadata that at least partially represents a creative intent indicative of how the input content is intended to be viewed. The method further comprises adaptively correcting the input content based on the ambient contextual data to preserve the creative intent, and providing the corrected input content to the display device for presentation. The adaptively correcting comprises applying automatic white balancing to the input content to correct color tone of the input content.Type: ApplicationFiled: June 15, 2022Publication date: February 9, 2023Inventors: Dung Trung Vo, Chenguang Liu, Chang Su, McClain C. Nelson, Madhu Athreya, William Mandel, Soojung Hyun
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Patent number: 11526968Abstract: One embodiment provides a method comprising determining metadata corresponding to an input image, determining a black level of a display device and a peak luminance value of the display device, and determining a tone mapping function that adaptively compensates for the black level of the display device based on the metadata, the black level of the display device, and the peak luminance value of the display device. The metadata comprises a distribution of luminance values in the input image. The black level of the display device and the peak luminance value of the display device represent a lowest luminance value and a highest luminance value, respectively, achievable on the display device. The method further comprises applying the tone mapping function to the input image to generate a tone-mapped image that adaptively compensates for the black level of the display device and provided to the display device for presentation.Type: GrantFiled: February 5, 2021Date of Patent: December 13, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Chenguang Liu, William Mandel, Dung Trung Vo, McClain C. Nelson, Soojung Hyun
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Publication number: 20220327672Abstract: One embodiment provides a method comprising determining multi-dimensional metadata corresponding to an input image, and determining ambient light information indicative of a level of ambient light in an ambient environment of a display device. The multi-dimensional metadata comprises a cumulative distribution function (CDF) of pixels in the input image. The method further comprises determining, based on the multi-dimensional metadata and the ambient light information, one or more gains that adaptively compensate for the level of ambient light in the ambient environment. The method further comprises generating a tone mapping function based on the one or more gains, and applying the tone mapping function to the input image to generate a tone-mapped image that adaptively compensates for the level of ambient light in the ambient environment. The tone-mapped image is provided to the display device for presentation.Type: ApplicationFiled: June 28, 2022Publication date: October 13, 2022Inventors: Dung Trung Vo, Chenguang Liu, McClain C. Nelson, William Mandel, Soojung Hyun
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Patent number: 11398017Abstract: One embodiment provides a method comprising determining multi-dimensional metadata corresponding to an input image, and determining ambient light information indicative of a level of ambient light in an ambient environment of a display device. The multi-dimensional metadata comprises a cumulative distribution function (CDF) of pixels in the input image. The method further comprises determining, based on the multi-dimensional metadata and the ambient light information, one or more gains that adaptively compensate for the level of ambient light in the ambient environment. The method further comprises generating a tone mapping function based on the one or more gains, and applying the tone mapping function to the input image to generate a tone-mapped image that adaptively compensates for the level of ambient light in the ambient environment. The tone-mapped image is provided to the display device for presentation.Type: GrantFiled: February 5, 2021Date of Patent: July 26, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dung Trung Vo, Chenguang Liu, McClain C. Nelson, William Mandel, Soojung Hyun
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Publication number: 20220164929Abstract: One embodiment provides a method comprising determining metadata corresponding to an input image, determining a black level of a display device and a peak luminance value of the display device, and determining a tone mapping function that adaptively compensates for the black level of the display device based on the metadata, the black level of the display device, and the peak luminance value of the display device. The metadata comprises a distribution of luminance values in the input image. The black level of the display device and the peak luminance value of the display device represent a lowest luminance value and a highest luminance value, respectively, achievable on the display device. The method further comprises applying the tone mapping function to the input image to generate a tone-mapped image that adaptively compensates for the black level of the display device and provided to the display device for presentation.Type: ApplicationFiled: February 5, 2021Publication date: May 26, 2022Inventors: Chenguang Liu, William Mandel, Dung Trung Vo, McClain C. Nelson, Soojung Hyun
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Publication number: 20220114707Abstract: One embodiment provides a method comprising determining multi-dimensional metadata corresponding to an input image, and determining ambient light information indicative of a level of ambient light in an ambient environment of a display device. The multi-dimensional metadata comprises a cumulative distribution function (CDF) of pixels in the input image. The method further comprises determining, based on the multi-dimensional metadata and the ambient light information, one or more gains that adaptively compensate for the level of ambient light in the ambient environment. The method further comprises generating a tone mapping function based on the one or more gains, and applying the tone mapping function to the input image to generate a tone-mapped image that adaptively compensates for the level of ambient light in the ambient environment. The tone-mapped image is provided to the display device for presentation.Type: ApplicationFiled: February 5, 2021Publication date: April 14, 2022Inventors: Dung Trung Vo, Chenguang Liu, McClain C. Nelson, William Mandel, Soojung Hyun
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Patent number: 9571857Abstract: Methods and apparatus are provided for video image pruning. An apparatus includes a data pruner for pre-processing a picture prior to, and in preparation for, compression by encoding. The data pruner selectively removes, in the spatial domain, at least one region within the picture. At the decoder end, an apparatus includes a data restorer for receiving a decompressed picture subsequent to decompression by decoding, and post-processing the decompressed picture by selectively restoring, in the spatial domain, at least one region in the decompressed picture based on information indicating a removal of the at least one region prior to a previously performed encoding process.Type: GrantFiled: September 1, 2009Date of Patent: February 14, 2017Assignee: THOMSON LICENSINGInventors: Dung Trung Vo, Joel Sole, Peng Yin, Yunfei Zheng
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Publication number: 20110170615Abstract: Methods and apparatus are provided for video image pruning. An apparatus includes a data pruner for pre-processing a picture prior to, and in preparation for, compression by encoding. The data pruner selectively removes, in the spatial domain, at least one region within the picture. At the decoder end, an apparatus includes a data restorer for receiving a decompressed picture subsequent to decompression by decoding, and post-processing the decompressed picture by selectively restoring, in the spatial domain, at least one region in the decompressed picture based on information indicating a removal of the at least one region prior to a previously performed encoding process.Type: ApplicationFiled: September 1, 2009Publication date: July 14, 2011Inventors: Dung Trung Vo, Joel Sole, Peng Yin, Yunfel Zheng
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Patent number: 7822286Abstract: A method filters pixels in a sequence of images. Each image in the sequence is partitioned into blocks of pixels, and the images are processed sequentially. The energy is determined for each block of pixels in each image. The energy of each block is based on variances of intensities of the pixels in the sequence of images. A 3D fuzzy filter is applied to each current pixel in each current block during the sequential processing. The 3D fuzzy filter considers the energy of the block, and the intensities of pixels spatially adjacent and temporally adjacent to the current pixel to remove blocking and ringing artifacts.Type: GrantFiled: October 3, 2007Date of Patent: October 26, 2010Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Sehoon Yea, Dung Trung Vo, Anthony Vetro