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公开(公告)号：US12052516B2
公开(公告)日：2024-07-30
申请号：US17648277
申请日：2022-01-18
Applicant: QUALCOMM Incorporated
Inventor： Wen-Chun Feng , Wei-Chih Liu , Yi-Chun Hsu , Tai-Hsiang Jen
CPC classification number: H04N23/88 , G06V10/25 , G06V40/162 , H04N23/80 , H04M1/0202 , H04N23/611
Abstract: A method of camera processing including receiving a first image, determining one or more first automatic white balance (AWB) parameters for the first image, determining one or more second AWB parameters for a region-of-interest (ROI) of the first image, applying the one or more first AWB parameters to one or more of the first image or a second image, and adjusting the ROI of one or more of the first image or the second image based on the one or more second AWB parameters.
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2.发明公开公开(公告)号：US20240267634A1
公开(公告)日：2024-08-08
申请号：US18166227
申请日：2023-02-08
Applicant: QUALCOMM Incorporated
Inventor： Wei-Te Chang , Yi-Chun Hsu , Kai Liu , Wei-Chih Liu , Wen-Chun Feng
Abstract: This disclosure provides systems, methods, and devices for image signal processing that support compensating for a diffraction pattern in an image. The diffraction pattern results from blades of a variable aperture of a camera used to capture the image. In a first aspect, a method of image processing includes receiving, by a processor, first image data; determining, by the processor, a characteristic of the first image data correlated with a color temperature of the first image data; determining, by the processor, a compensation matrix based on whether the characteristic exceeds a predetermined threshold, wherein the compensation matrix comprises correction values for reducing red channel peaks in the first image data; and determining, with the computing device, corrected image data based on the first image data and on the compensation matrix. Other aspects and features are also claimed and described.
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公开(公告)号：US20190230253A1
公开(公告)日：2019-07-25
申请号：US15877927
申请日：2018-01-23
Applicant: QUALCOMM Incorporated
Inventor： Soman Nikhara , Ho Sang Lee , Wei-Chih Liu
IPC: H04N1/60
Abstract: Methods, systems, and devices for color enhancement are described. A device may receive a raw image from a sensor (e.g., a camera of the device). The device may detect multiple regions of pixels corresponding to different image features in the raw image. For example, each region of pixels may correspond to one or more facial features. The device may compute one or more color ratios for each region of pixels. The device may then determine a respective color correction matrix for each region of pixels based at least in part on the one or more color ratios associated with that region of pixels. The device may generate a color-corrected image based on applying the respective color correction matrix to each region of pixels and may output the color-corrected image (e.g., to a display of the device, to a system memory, etc.).
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公开(公告)号：US20180115757A1
公开(公告)日：2018-04-26
申请号：US15331511
申请日：2016-10-21
Applicant: QUALCOMM Incorporated
Inventor： Shang-Chih Chuang , Wei-Chih Liu , Kyuseo Han
CPC classification number: H04N9/735 , H04N1/6077 , H04N1/6086 , H04N9/07 , H04N9/73
Abstract: In one example, a method for white balancing image data includes obtaining, for a zone of a color space, a mesh defining a plurality of polygons having vertices that are each associated with one or more white balance parameters; identifying a polygon of the plurality of polygons that includes a pixel of the image data; determining one or more white balance parameters for the pixel of the image data based on an interpolation of white balance parameters associated with vertices of the polygon that includes the pixel of the image data; and performing, based on the one or more white balance parameters for the pixel of the image data, a white balance operation on the pixel of the image data.
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公开(公告)号：US20250119654A1
公开(公告)日：2025-04-10
申请号：US18729055
申请日：2022-03-25
Applicant: QUALCOMM Incorporated
Inventor： Yi-Chun Hsu , Tai-Hsiang Jen , Zhi Qin , Tsung-yen Chen , Wei-Chih Liu
IPC: H04N23/88
Abstract: This disclosure provides systems, methods, and devices for image processing that support enhanced white balancing operations. In a first aspect, a method of image processing includes receiving first image data obtained at a first aperture; determining a first output image frame based on the first image data by applying a first white balancing to at least a portion of the first image data; receiving second image data obtained at a second aperture; and determining a second output image frame based on the second image data by applying a second white balancing based on the first aperture and the second aperture to at least a portion of the second image data. The second white balancing may be based on a first compensation factor based on the first aperture and the second aperture used to adjust the first white balancing. Other aspects and features are also claimed and described.
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Patent Agency Ranking
公开(公告)号：US12192649B2
公开(公告)日：2025-01-07
申请号：US17334182
申请日：2021-05-28
Applicant: QUALCOMM Incorporated
Inventor： Wen-Chun Feng , Wei-Chih Liu , Yi-Chun Hsu , Tai-Hsiang Jen
Abstract: A multi-point measurement of a scene captured in an image frame may be used to process the image frame, such as by applying white balance corrections to the image frame. In some examples, the image frame may be segmented into portions that are illuminated by different illumination sources. Different portions of the image frame may be white balanced differently based on the color temperature of the illumination source for the corresponding portion. Infrared measurements of multiple points in the scene may be used to determine a characteristic of the illumination source of different portions of the scene. For example, a picture that includes indoor and outdoor portions may be illuminated by at least two illumination sources that produce different infrared measurements values. White balancing may be applied differently to these two portions to correct for color temperature of the different sources.
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公开(公告)号：US20230239584A1
公开(公告)日：2023-07-27
申请号：US17648786
申请日：2022-01-24
Applicant: QUALCOMM Incorporated
Inventor： Wei-Chih Liu , Yi-Chun Hsu , Tsung-Yen Chen , Tai-Hsiang Jen
CPC classification number: H04N9/735 , G06T7/90 , G06T2207/10024
Abstract: This disclosure provides systems, methods, and devices for image processing that support enhanced white balancing operations. In a first aspect, a method of image processing includes receiving first image data from an image sensor; determining to adjust a white balancing operation from a first white balance point to a second white balance point; determining a first intermediate white balance point based on the first white balance point, the second white balance point, and a white balance reference line; receiving second image data from the image sensor; and applying white balancing to the second image data based on the first intermediate white balance point. Other aspects and features are also claimed and described.
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公开(公告)号：US12022206B2
公开(公告)日：2024-06-25
申请号：US17648786
申请日：2022-01-24
Applicant: QUALCOMM Incorporated
Inventor： Wei-Chih Liu , Yi-Chun Hsu , Tsung-Yen Chen , Tai-Hsiang Jen
CPC classification number: H04N23/88 , G06T7/90 , G06T2207/10024
Abstract: This disclosure provides systems, methods, and devices for image processing that support enhanced white balancing operations. In a first aspect, a method of image processing includes receiving first image data from an image sensor; determining to adjust a white balancing operation from a first white balance point to a second white balance point; determining a first intermediate white balance point based on the first white balance point, the second white balance point, and a white balance reference line; receiving second image data from the image sensor; and applying white balancing to the second image data based on the first intermediate white balance point. Other aspects and features are also claimed and described.
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公开(公告)号：US11671715B2
公开(公告)日：2023-06-06
申请号：US17149371
申请日：2021-01-14
Applicant: QUALCOMM Incorporated
Inventor： Tai-Hsin Liu , Wen-Chun Feng , Wei-Chih Liu , Jun-Zuo Liu
IPC: H04N23/741 , H04N23/68 , H04N23/45
CPC classification number: H04N23/741 , H04N23/6811 , H04N23/45
Abstract: A device for camera processing is configured to receive a preview image, and determine if the preview image is a high dynamic range (HDR) scene based on brightness values of pixels of the preview image. The device may further determine to use a single frame image capture technique based on a determination that the preview image is not an HDR scene, and determine to use one of a plurality of HDR image capture techniques based on a determination that the preview image is an HDR scene, and further based on motion detected in the preview image. The device may then generate an output image using one or more images captured using the single frame image capture technique or one of the plurality of HDR image capture techniques.
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公开(公告)号：US20230017498A1
公开(公告)日：2023-01-19
申请号：US17648277
申请日：2022-01-18
Applicant: QUALCOMM Incorporated
Inventor： Wen-Chun Feng , Wei-Chih Liu , Yi-Chun Hsu , Tai-Hsiang Jen
Abstract: A method of camera processing including receiving a first image, determining one or more first automatic white balance (AWB) parameters for the first image, determining one or more second AWB parameters for a region-of-interest (ROI) of the first image, applying the one or more first AWB parameters to one or more of the first image or a second image, and adjusting the ROI of one or more of the first image or the second image based on the one or more second AWB parameters.
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