公开(公告)号：US20220385873A1

公开(公告)日：2022-12-01

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

IPC: H04N9/73 ,  H04N5/235 ,  G01S17/89 ,  G01J5/60 ,  G01J5/00

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.

公开(公告)号：US20220224820A1

公开(公告)日：2022-07-14

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: H04N5/235 ,  H04N5/232

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.

公开(公告)号：US11184553B1

公开(公告)日：2021-11-23

申请号：US17029526

申请日：2020-09-23

Applicant: QUALCOMM Incorporated

Inventor： Tai-Hsin Liu ,  Wei-Chih Liu ,  Wen-Chun Feng

IPC: H04N5/235 ,  H04N5/225 ,  H04N5/262

Abstract: A processor generates a depth map from two images, including a high-dynamic range (HDR) image. The processor receives, from a first image sensor, one or more first images, wherein the one or more first images have a first field-of-view (FOV) and a first resolution, and receives, from a second image sensor, one or more second images, wherein the one or more second images have a second FOV and a second resolution. The processor generates a first HDR image from the one or more first images, and performs tone alignment on the one or more second images based on the first HDR image to produce a second HDR image. The processor generates a depth map using the first HDR image and the second HDR image. The processor may use the depth map to apply a bokeh effect to the first HDR image.

公开(公告)号：US20190394379A1

公开(公告)日：2019-12-26

申请号：US16015034

申请日：2018-06-21

Applicant: QUALCOMM Incorporated

Inventor： Loic Francois Segapelli ,  Wei-Chih Liu ,  Tai-Hsin Kiu

IPC: H04N5/235

Abstract: Methods, systems, and devices for image processing are described. The method includes capturing from a sensor a first image frame using an initial exposure length, calculating, based on a clipping status of a set of one or more pixels of the first image frame, a predicted exposure length and a hedged exposure length, where the predicted exposure length is different from the hedged exposure length by at least a threshold, capturing from the sensor a first array of pixels using the predicted exposure length and a second array of pixels using the hedged exposure length, capturing from the sensor a second image frame using a converged exposure length, where the converged exposure length is based on a comparison of a saturation of the first array of pixels to a saturation of the second array of pixels, and outputting the second image frame.

公开(公告)号：US20190311464A1

公开(公告)日：2019-10-10

申请号：US15946622

申请日：2018-04-05

Applicant: QUALCOMM Incorporated

Inventor： Shang-Chih Chuang ,  Wei-Chih Liu ,  Kyuseo Han ,  Ying Noyes ,  Ho Sang Lee

IPC: G06T5/00 ,  G06T7/90

Abstract: A device may obtain a pixel array representing an image and identify one or more representative metrics for the pixel array. The device may retrieve a first version of a mesh defining a color space, wherein the mesh includes a plurality of vertices and each vertex is associated with a respective set of color balance parameters. The device may identify a point in the color space corresponding to the pixel array based on the one or more representative metrics for the pixel array. The device may receive a tuning input comprising a set of color balance parameters for the point and generate a second version of the mesh by adding the point and the set of color balance parameters to the first version of the mesh. The device may output at least one color-corrected image based at least in part on the second version of the mesh.