公开(公告)号：US10269135B2

公开(公告)日：2019-04-23

申请号：US15645555

申请日：2017-07-10

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Zhongmin Wang ,  Lei Wang

IPC: G06K9/00 ,  H04N5/225 ,  G06T7/70 ,  G06K9/62 ,  G06T7/90

Abstract: Methods, apparatuses, and computer-readable media are provided for maintaining blob trackers for video frames. For example, a blob tracker maintained for a current video frame is identified. The blob tracker is associated with a blob detected in one or more video frames. The blob includes pixels of at least a portion of a foreground object in the one or more video frames. A current bounding region of the blob tracker for the current video frame is compared to a previous bounding region of the blob tracker for a previous video frame that is obtained earlier in time than the current video frame. It can be determined whether the current bounding region has decreased in size as compared to a size of the previous bounding region, and whether a first color characteristic of pixels of the current video frame included in the previous bounding region is within a threshold from a second color characteristic of pixels of the previous video frame included in the previous bounding region. In some examples, the blob is tracked in the current frame using the current bounding region when the current bounding region has decreased in size and when the first color characteristic is within the threshold from the second color characteristic. In some examples, the blob is tracked using the current bounding region when the blob tracker is determined to be lost (e.g., the blob tracker is not associated with the blob in the current video frame).

公开(公告)号：US10269123B2

公开(公告)日：2019-04-23

申请号：US15402103

申请日：2017-01-09

Applicant: QUALCOMM Incorporated

Inventor： Yunke Pan ,  Ying Chen ,  Jian Wei

IPC: G06T7/194 ,  G06K9/00 ,  G06K9/62 ,  G06T7/174 ,  G06K9/32 ,  G06T7/11

Abstract: Methods and an apparatus for background subtraction are described. According to some implementations, the temporal history of a pixel location can be used to classify whether a current input pixel of a current input video frame is a background pixel or a foreground pixel. The classification can be made based on the number of matching pixels in corresponding pixel locations in background history planes. One of the background history planes can be updated according to the classified background pixels and persistent classified foreground pixels.

公开(公告)号：US10230983B2

公开(公告)日：2019-03-12

申请号：US15108759

申请日：2013-12-30

Applicant: QUALCOMM Incorporated ,  Hongbin Liu ,  Ying Chen ,  Li Zhang

Inventor： Hongbin Liu ,  Ying Chen ,  Li Zhang

IPC: H04N19/597 ,  H04N19/91 ,  H04N19/159 ,  H04N19/13 ,  H04N19/182 ,  H04N19/176 ,  H04N19/70

Abstract: This disclosure describes techniques for simplifying delta DC residual coding in a 3D video coding process, such as 3D-HEVC. In some examples, the techniques may modify binarization and/or context modeling processes to reduce the complexity of entropy coding of one or more syntax elements used to represent delta DC residual values.

公开(公告)号：US10152630B2

公开(公告)日：2018-12-11

申请号：US15264270

申请日：2016-09-13

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Jianfeng Ren ,  Jian Wei ,  Ning Bi

IPC: G06K9/00 ,  G06K9/34 ,  G06T5/20 ,  G06T7/00

Abstract: Techniques and systems are provided for processing video data. For example, techniques and systems are provided for performing content-adaptive blob filtering. A number of blobs generated for a video frame is determined. A size of a first blob from the blobs is determined, the first blob including pixels of at least a portion of a first foreground object in the video frame. The first blob is filtered from the plurality of blobs when the size of the first blob is less than a size threshold. The size threshold is determined based on the number of the plurality of blobs generated for the video frame.

公开(公告)号：US10110895B2

公开(公告)日：2018-10-23

申请号：US15103798

申请日：2013-12-13

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Hongbin Liu ,  Ying Chen

IPC: H04N19/107 ,  H04N19/159 ,  H04N19/182 ,  H04N19/463 ,  H04N19/597 ,  H04N19/70 ,  H04N19/91

Abstract: This disclosure describes techniques for signaling and processing information indicating simplified depth coding (SDC) for depth intra-prediction and depth inter-prediction modes in a 3D video coding process, such as a process defined by the 3D-HEVC extension to HEVC. In some examples, the disclosure describes techniques for unifying the signaling of SDC for depth intra-prediction and depth inter-prediction modes in 3D video coding. The signaling of SDC can be unified so that a video encoder or video decoder uses the same syntax element for signaling SDC for both the depth intra-prediction mode and the depth inter-prediction mode. Also, in some examples, a video coder may and/or process a residual value generated in the SDC mode using the same syntax structure, or same type of syntax structure, for both the depth intra-prediction mode and depth inter-prediction mode.

公开(公告)号：US20180286199A1

公开(公告)日：2018-10-04

申请号：US15655065

申请日：2017-07-20

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Ning Bi ,  Yang Zhou

IPC: G08B13/196 ,  G06K9/00 ,  G06T7/215 ,  G06T7/246

Abstract: Methods, apparatuses, and computer-readable media are provided for splitting one or more merged blobs for one or more video frames. For example, a merged blob detected for a current video frame is identified. The merged blob includes pixels of at least a portion of at least two foreground objects in the current video frame. The merged blob is associated with a first blob tracker and a second blob tracker. A shape of the first blob tracker can be adjusted. For instance, adjusting the shape of the first blob tracker can include shifting at least one boundary of a bounding region of the first blob tracker based on the shape of the merged blob. The merged blob can be split into a first blob and a second blob, with the first blob being associated with the adjusted bounding region of the first blob tracker and the second blob being associated with a bounding region of the a second blob tracker. The first blob and the second blob can then be output for object tracking for the current video frame.

公开(公告)号：US10055669B2

公开(公告)日：2018-08-21

申请号：US15235999

申请日：2016-08-12

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Ning Bi ,  Lei Wang ,  Jinglun Gao

IPC: G06K9/00 ,  G06K9/46 ,  G06K9/38

CPC classification number: G06K9/4642 ,  G06K9/00711 ,  G06K9/38 ,  G06T7/11 ,  G06T7/136 ,  G06T7/194 ,  G06T7/254 ,  G06T2207/10016 ,  G06T2207/30232 ,  G06T2207/30242

Abstract: Techniques and systems are provided for processing video data. For example, techniques and systems are provided for determining blob size thresholds. Blob sizes of blobs generated for a video frame can be determined. A lower boundary of a category of blob sizes can then be determined that corresponds to a minimum blob size of the video frame. The lower boundary is determined from a plurality of possible blob sizes including the blob sizes of the blobs and one or more other possible blob sizes. One of the possible blob sizes is determined as the lower boundary when one or more lower boundary conditions are met by characteristics of the possible blob size. A blob size threshold for the video frame is assigned as the minimum blob size corresponding to the lower boundary.

公开(公告)号：US10015504B2

公开(公告)日：2018-07-03

申请号：US15220856

申请日：2016-07-27

Applicant: QUALCOMM Incorporated

Inventor： Jian Wei ,  Ying Chen ,  Lei Wang

IPC: H04N19/44 ,  H04N19/12 ,  G06T1/20

CPC classification number: H04N19/44 ,  G06T1/20 ,  H04N19/10 ,  H04N19/12

Abstract: In an example of this disclosure, a method may include receiving or generating image segmentation data for a plurality of pixels. The image segmentation data may include one or more image segmentation values for each pixel of the plurality of pixels. The method may include converting the one or more image segmentation values into one or more image component values. The method may include sending the one or more image component values corresponding to the one or more image segmentation values to a video encoder.

公开(公告)号：US09948950B2

公开(公告)日：2018-04-17

申请号：US14588837

申请日：2015-01-02

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen

IPC: H04B1/66 ,  H04N19/597 ,  H04N19/517 ,  H04N19/70

CPC classification number: H04N19/597 ,  H04N19/517 ,  H04N19/70

Abstract: A device for processing three-dimensional (3D) video data may determine, based on direct dependent layers signaled in a video parameter set, that the current texture layer of the video data is dependent on a depth layer of the video data; and process the current texture layer using the depth layer.

公开(公告)号：US09906768B2

公开(公告)日：2018-02-27

申请号：US14340394

申请日：2014-07-24

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Jewon Kang

IPC: H04N13/00 ,  H04N19/597 ,  H04N19/52 ,  H04N19/70 ,  H04N19/46 ,  H04N19/44 ,  H04N19/56

CPC classification number: H04N13/161 ,  H04N19/44 ,  H04N19/46 ,  H04N19/52 ,  H04N19/56 ,  H04N19/597 ,  H04N19/70

Abstract: In general, the disclosure relates to encoding and decoding a block of video data associated with three-dimensional (3D) video. A video coding device determines whether a depth condition associated with the block of video data should be set to valid within a coded bitstream. When the depth condition should be set to valid, the video coding device sets the depth condition to valid and encodes the block of video data using at least one camera parameter. The video coding device then determines whether the depth condition is valid. When the depth condition is valid, the video coding device decodes the block of video data using at least one camera parameter.