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公开(公告)号：US11223792B2
公开(公告)日：2022-01-11
申请号：US16712715
申请日：2019-12-12
Applicant: Google LLC
Inventor： Sami Kalliomäki , Niklas Blum , Stefan Ekerfelt , Peter Hanspers , Magnus Jedvert
Abstract: A method enhances brightness in video frames of a video during streams. The method includes determining, by a processor, that a first video frame has low light. The method further includes applying, by the processor, a linear correction to provide a first brightness enhancement in the first video frame that modifies a first brightness of a predetermined darkest percentage of pixels to be less than a darkness threshold value or a second brightness of a predetermined lightest percentage of the pixels to be greater than a lightness threshold value. The method further includes averaging, by the processor, the first brightness enhancement of the first video frame with a set of brightness enhancements corresponding to previous video frames to generate a modified video.
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公开(公告)号：US20220109804A1
公开(公告)日：2022-04-07
申请号：US17552136
申请日：2021-12-15
Applicant: Google LLC
Inventor： Sami Kalliomaki , Niklas Blum , Stefan Ekerfelt , Peter Hanspers , Magnus Jedvert
Abstract: A method enhances brightness in video frames of a video during streams. The method includes determining, by a processor, that a first video frame has low light. The method further includes applying, by the processor, a linear correction to provide a first brightness enhancement in the first video frame that modifies a first brightness of a predetermined darkest percentage of pixels to be less than a darkness threshold value or a second brightness of a predetermined lightest percentage of the pixels to be greater than a lightness threshold value. The method further includes averaging, by the processor, the first brightness enhancement of the first video frame with a set of brightness enhancements corresponding to previous video frames to generate a modified video.
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公开(公告)号：US11671557B2
公开(公告)日：2023-06-06
申请号：US17552136
申请日：2021-12-15
Applicant: Google LLC
Inventor： Sami Kalliomäki , Niklas Blum , Stefan Ekerfelt , Peter Hanspers , Magnus Jedvert
CPC classification number: H04N5/58 , G06T5/009 , G06T5/40 , G06T5/50 , H04N23/71 , H04N23/72 , G06T2200/28 , G06T2207/10016 , G06T2207/20072 , G06T2207/20208 , G06T2207/20216
Abstract: A method enhances brightness in video frames of a video during streams. The method includes determining, by a processor, that a first video frame has low light. The method further includes applying, by the processor, a linear correction to provide a first brightness enhancement in the first video frame that modifies a first brightness of a predetermined darkest percentage of pixels to be less than a darkness threshold value or a second brightness of a predetermined lightest percentage of the pixels to be greater than a lightness threshold value. The method further includes averaging, by the processor, the first brightness enhancement of the first video frame with a set of brightness enhancements corresponding to previous video frames to generate a modified video.
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公开(公告)号：US20210185271A1
公开(公告)日：2021-06-17
申请号：US16712715
申请日：2019-12-12
Applicant: Google LLC
Inventor： Sami Kalliomaki , Niklas Blum , Stefan Ekerfelt , Peter Hanspers , Magnus Jedvert
Abstract: A method enhances brightness in video frames of a video during streams. The method includes determining, by a processor, that a first video frame has low light. The method further includes applying, by the processor, a linear correction to provide a first brightness enhancement in the first video frame that modifies a first brightness of a predetermined darkest percentage of pixels to be less than a darkness threshold value or a second brightness of a predetermined lightest percentage of the pixels to be greater than a lightness threshold value. The method further includes averaging, by the processor, the first brightness enhancement of the first video frame with a set of brightness enhancements corresponding to previous video frames to generate a modified video.
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