LOW-LIGHT VIDEO FRAME ENHANCEMENT
First Claim
1. A method of combining image data from multiple frames to enhance one or more parameters of digital image quality, comprising using a processor and at least one digital image acquisition system including a lens and an image sensor in:
- acquiring a first image at a first exposure duration;
acquiring a second image at a second exposure duration shorter than the first exposure duration and at a time just before, just after or overlapping in time with acquiring the first image, such that said first and second images comprise approximately a same first scene, and whereby the second image is relatively sharp and under-exposed and the first image is relatively well-exposed and less sharp than the second image;
extracting brightness or color information, or both, from the first image;
applying to the second image the brightness or color information, or both, extracted from the first image to generate an enhanced version of the second image enhanced in terms of brightness or color quality, or both; and
displaying, storing, transmitting, or streaming the enhanced version of the second image.
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Accused Products
Abstract
A method of combining image data from multiple frames to enhance one or more parameters of video image quality includes acquiring a first image at a first exposure duration, as well as acquiring a second image at a second exposure duration shorter than the first exposure duration and at a time just before, just after or overlapping in time with acquiring the first image, such that the first and second images include approximately a same first scene. In this way, the second image is relatively sharp and under-exposed, while the first image is relatively well-exposed and less sharp than the second image. Brightness and/or color information are extracted from the first image and applied to the second image to generate an enhanced version of the second image.
225 Citations
51 Claims
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1. A method of combining image data from multiple frames to enhance one or more parameters of digital image quality, comprising using a processor and at least one digital image acquisition system including a lens and an image sensor in:
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acquiring a first image at a first exposure duration; acquiring a second image at a second exposure duration shorter than the first exposure duration and at a time just before, just after or overlapping in time with acquiring the first image, such that said first and second images comprise approximately a same first scene, and whereby the second image is relatively sharp and under-exposed and the first image is relatively well-exposed and less sharp than the second image; extracting brightness or color information, or both, from the first image; applying to the second image the brightness or color information, or both, extracted from the first image to generate an enhanced version of the second image enhanced in terms of brightness or color quality, or both; and displaying, storing, transmitting, or streaming the enhanced version of the second image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 49)
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17. A digital image acquisition system, comprising a lens, an image sensor for capturing a stream of multiple digital images, a processor and a memory having processor-readable code embedded therein for programming the processor to perform a method of combining image data from multiple frames to enhance one or more parameters of digital image quality, wherein the method comprises:
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acquiring a first image at a first exposure duration; acquiring a second image at a second exposure duration shorter than the first exposure duration and at a time just before, just after or overlapping in time with acquiring the first image, such that said first and second images comprise approximately a same first scene, and whereby the second image is relatively sharp and under-exposed and the first image is well-exposed and less sharp than the second image; extracting brightness or color information, or both, from the first image; applying to the second image the brightness or color information, or both, extracted from the first image to generate an enhanced version of the second image enhanced in terms of brightness or color quality, or both. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 50)
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33. One or more processor-readable media having processor-readable code embedded therein for programming one or more processors to perform a method of combining image data from multiple frames to enhance one or more parameters of digital image quality, comprising:
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acquiring a first image at a first exposure duration; acquiring a second image at a second exposure duration shorter than the first exposure duration and at a time just before, just after or overlapping in time with acquiring the first image, such that said first and second images comprise approximately a same first scene, and whereby the second image is relatively sharp and under-exposed and the first image is well-exposed and less sharp than the second image; extracting brightness or color information, or both, from the first image; applying to the second image the brightness or color information, or both, extracted from the first image to generate an enhanced version of the second image enhanced in terms of brightness or color quality, or both. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 51)
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Specification