-
公开(公告)号：US11373281B1
公开(公告)日：2022-06-28
申请号：US17183231
申请日：2021-02-23
Applicant: QUALCOMM Incorporated
Inventor： Narayana Karthik Ravirala , Xiaoyun Jiang , Shang-Chih Chuang , Yi-Chun Lu , Younsu Kim
Abstract: Methods, systems, and devices for anchor frame switching in an imaging system are described. A device may generate a pixel map based on a set of frames. A first subset of frames of the set of frames have a first exposure and a second subset of frames of the set of frames have a second exposure different than the first exposure. The device may determine a region of the pixel map representing motion between at least two frames of the first set of frames. If the device determines that a quantity of motion pixels in the region is higher than a threshold, the device may select a short exposure frame as an anchor frame, beginning at a later frame. Otherwise, the device may maintain using a long exposure frame as the anchor frame.
-
公开(公告)号：US11276177B1
公开(公告)日：2022-03-15
申请号：US17063541
申请日：2020-10-05
Applicant: QUALCOMM Incorporated
Inventor： Chung-Chi Tsai , Sreevatsan Madhavan , Shang-Chih Chuang , Kuang-Jui Hsu , Venkata Ravi Kiran Dayana , Xiaoyun Jiang
Abstract: Systems, methods, and computer-readable media are provided for foreground image segmentation. In some examples, a method can include obtaining a first image of a target and a second image of the target, the first image having a first field-of-view (FOV) and the second image having a second FOV; determining, based on the first image, a first segmentation map that identifies a first estimated foreground region in the first image; determining, based on the second image, a second segmentation map that identifies a second estimated foreground region in the second image; generating a third segmentation map based on the first segmentation map and the second segmentation map; and generating, using the second segmentation map and the third segmentation map, a refined segmentation mask that identifies the target as a foreground region of the first and/or second image.
-
公开(公告)号：US10863148B2
公开(公告)日：2020-12-08
申请号：US16010313
申请日：2018-06-15
Applicant: QUALCOMM Incorporated
Inventor： Shang-Chih Chuang , Xiaoyun Jiang , Jun Zuo Liu
Abstract: Aspects of the present disclosure relate to systems and methods for selectively processing tiles of a captured image. The captured image may be parsed into a plurality of tiles. A subset of the plurality of tiles may be selected based at least in part on at least one metric. The selected tiles may be processed according to a first technique, while each unselected tile may be selectively processed according to one or more techniques different from the first technique. The first technique and the one or more techniques may each be either an image demosaicing technique or an image denoising technique.
-
公开(公告)号：US20200045227A1
公开(公告)日：2020-02-06
申请号：US16260976
申请日：2019-01-29
Applicant: QUALCOMM Incorporated
Inventor： Xiaoyun Jiang , Jing Wang , Shang-Chih Chuang , Jiafu Luo
Abstract: In general, techniques are described regarding a combined monochrome and chromatic camera sensor. A camera comprising a camera sensor and a processor may be configured to perform the techniques. The camera sensor may include pixel sensors, monochrome filters disposed over a first subset of the pixel sensors, and color filters disposed over a second subset of the pixel sensors. The first subset of the pixel sensors may be configured to capture a monochrome image of a scene. The second subset of the pixel sensors may be configured to capture, concurrently with the capture of the monochrome image, a color image of the scene, where a number of the first subset of the pixel sensors is greater than a number of the second subset of the pixel sensors. The processor may be configured to process the monochrome image and the color image to obtain an enhanced color image of the scene.
-
公开(公告)号：US20190035056A1
公开(公告)日：2019-01-31
申请号：US15661935
申请日：2017-07-27
Applicant: QUALCOMM Incorporated
Inventor： Shang-Chih Chuang , Jun Zuo Liu , Xiaoyun Jiang
Abstract: A system and method are disclosed for generating an overshoot-corrected set of edges of an input image. An example method includes, receiving an input image, and generating a coarse set of edge pixels based on the received input image For each given pixel in the coarse set of edge pixels, the example method includes identifying a first pixel of the input image that corresponds to the given pixel in the coarse set of edge pixels; and determining a modified edge pixel for the given pixel based at least in part on differences between the first pixel and one or more pixels of the input image that are located within a vicinity of the first pixel. The example method further includes generating an edge-enhanced version of the input image based at least in part on the modified edge pixels.
-
Patent Agency Ranking
公开(公告)号：US11595625B2
公开(公告)日：2023-02-28
申请号：US16733056
申请日：2020-01-02
Applicant: QUALCOMM Incorporated
Inventor： Jing Wang , Xiaoyun Jiang , Shang-Chih Chuang , Jiafu Luo
Abstract: Apparatus for generating images using a mechanical infrared cut-off switch are disclosed herein. An example apparatus including an optical system for generating images includes a mechanical infrared light filter movable between a first position and a second position. The mechanical infrared light filter may be configured to allow infrared light to pass through the optical system while in the first position and configured to filter out infrared light from the optical system while in the second position. The example apparatus also includes an imaging sensor including imaging pixels and infrared pixels, and may be configured to receive light from the optical system. Additionally, the example apparatus includes a processor configured to receive visible light data and infrared light data from the image sensor. The processor may further be configured to generate a combined image based on the visible light data and the infrared light data.
-
公开(公告)号：US20220345605A1
公开(公告)日：2022-10-27
申请号：US17241742
申请日：2021-04-27
Applicant: QUALCOMM Incorporated
Inventor： Shang-Chih Chuang , Ron Gaizman , Pradeep Veeramalla , Shizhong Liu , Weiliang Liu , Xiaoyun Jiang , Narayana Karthik Ravirala , Jiafu Luo , Srinath Anekere Narayan , Wei Zou
IPC: H04N5/232
Abstract: Image frames for computational photography may be corrected, such as through rolling shutter correction (RSC), prior to fusion of the image frames to reduce wobble and jitter artifacts present in a video sequence of HDR-enhanced image frames. First and second motion data regarding motion of the image capture device may be determined for times corresponding to the capturing of the first and second image frames, respectively. The rolling shutter correction (RSC) may be applied to the first and second image frames based on both the first and second motion data. The corrected first and second image frames may then be aligned and fused to obtain a single output image frame with higher dynamic range than either of the first or second image frames.
-
公开(公告)号：US10853913B2
公开(公告)日：2020-12-01
申请号：US16298793
申请日：2019-03-11
Applicant: QUALCOMM Incorporated
Inventor： Shang-Chih Chuang , Jing Wang , Xiaoyun Jiang
Abstract: Methods, systems, and devices for processing color information are described. The method may include receiving a first set of image data collected at an image sensor based on a first color filter array having a first filter pattern, calculating a color saturation gradient based on the first set of image data, and calculating multiple color gradients based on the color saturation gradient. The multiple color gradients may each be associated with a region of the first set of image data, where each color gradient characterizes a color variation along a different direction of the region. The method may include generating a second set of image data including a color value for the region based on comparing a first direction gradient of the multiple color gradients with a second direction gradient of the multiple color gradients. Color values associated with the regions may be mapped to a second color filter array.
-
公开(公告)号：US20190019272A1
公开(公告)日：2019-01-17
申请号：US15649510
申请日：2017-07-13
Applicant: QUALCOMM Incorporated
Inventor： Shang-Chih Chuang , Jun Zuo Liu , Xiaoyun Jiang
IPC: G06T5/00
Abstract: Methods and apparatuses for image processing are disclosed. An example method may include receiving an image to be processed. The method may further include selecting a pixel of the image. The method may also include determining, for each of a plurality of directions through the selected pixel, a gradient in intensity based on the selected pixel and a set of one or more neighboring pixels along the corresponding direction. The method may further include determining, for each of the plurality of directions, if the set of one or more neighboring pixels is selected for adjusting the intensity of the selected pixel based on the corresponding determined gradient in intensity. The method may also include determining a noise reduction filter for the selected pixel based on the selected sets of one or more neighboring pixels. The method may further include applying the determined noise reduction filter to the selected pixel of the image.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
21
records
(took 0.015 seconds)
