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    Monitoring Method and Apparatus
    1.
    发明申请
    Monitoring Method and Apparatus 有权

    公开(公告)号：US20210183041A1

    公开(公告)日：2021-06-17

    申请号：US17168781

    申请日：2021-02-05

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Ruihua Li ,  Hongqi Hu ,  Changcai Lai ,  Qingping Wang ,  Xiaolei Chen

    IPC: G06T7/00 ,  H04N7/18 ,  H04N5/232 ,  G06K9/00 ,  G08G1/04

    Abstract: A monitoring and photographing module includes one primary camera and N secondary cameras. The primary camera and the N secondary cameras are configured to collect images, and a frame rate at which any secondary camera collects an image is less than a frame rate at which the primary camera collects an image. Regions monitored by the N secondary cameras respectively cover N different regions in a region monitored by the primary camera, and a focal length of any secondary camera is greater than a focal length of the primary camera.

    Encoding and decoding methods and apparatuses
    2.
    发明授权
    Encoding and decoding methods and apparatuses 有权

    公开(公告)号：US10104380B2

    公开(公告)日：2018-10-16

    申请号：US15616677

    申请日：2017-06-07

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Changcai Lai

    IPC: H04N19/159 ,  H04N19/593 ,  H04N19/11 ,  H04N19/176 ,  H04N19/463

    Abstract: The present disclosure provides a method for encoding an intra-frame prediction mode, including: obtaining an intra-frame prediction mode of a current intra-frame encoding block from a preset prediction mode set; obtaining reference prediction modes of the current intra-frame encoding block, where the reference prediction modes are intra-frame prediction modes of available adjacent blocks of the current intra-frame encoding block or prediction modes in a preset backup reference mode set; writing a first flag bit into a code stream according to the reference prediction modes and the intra-frame prediction mode; and, when the intra-frame prediction mode of the encoding block is different from all the reference prediction modes, obtaining a prediction mode encoding value according to a size relationship between the value of the intra-frame prediction mode and values of the reference prediction modes, and encoding the prediction mode encoding value.

    Encoding and decoding methods and apparatuses
    3.
    发明授权
    Encoding and decoding methods and apparatuses 有权

    公开(公告)号：US09769474B2

    公开(公告)日：2017-09-19

    申请号：US14142437

    申请日：2013-12-27

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Changcai Lai

    IPC: H04N19/593 ,  H04N19/176 ,  H04N19/11 ,  H04N19/463

    CPC classification number: H04N19/159 ,  H04N19/11 ,  H04N19/176 ,  H04N19/463 ,  H04N19/593

    Abstract: The present disclosure provides a method for encoding an intra-frame prediction mode, including: obtaining an intra-frame prediction mode of a current intra-frame encoding block from a preset prediction mode set; obtaining reference prediction modes of the current intra-frame encoding block, where the reference prediction modes are intra-frame prediction modes of available adjacent blocks of the current intra-frame encoding block or prediction modes in a preset backup reference mode set; writing a first flag bit into a code stream according to the reference prediction modes and the intra-frame prediction mode; and, when the intra-frame prediction mode of the encoding block is different from all the reference prediction modes, obtaining a prediction mode encoding value according to a size relationship between the value of the intra-frame prediction mode and values of the reference prediction modes, and encoding the prediction mode encoding value.

    Encoding and decoding methods and apparatuses with multiple image block division manners
    5.
    发明授权
    Encoding and decoding methods and apparatuses with multiple image block division manners 有权

    公开(公告)号：US11290717B2

    公开(公告)日：2022-03-29

    申请号：US17094560

    申请日：2020-11-10

    Applicant: Huawei Technologies Co., Ltd. ,  Tsinghua University

    Inventor： Changcai Lai ,  Xiaoran Cao ,  Yongbing Lin ,  Lingzhi Liu ,  Yun He

    IPC: H04N19/119 ,  H04N19/147 ,  H04N19/124 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61

    Abstract: An encoding method with multiple image block division manners is disclosed, including: determining a division manner and a division direction of an image block; dividing the image block to obtain image subblocks sequentially arranged horizontally or vertically; determining whether the image subblocks need subdivision, and if subdivision is not needed, predicting the encoding object in the frame according to the image subblocks, to obtain residual data; performing transformation, quantization, and entropy encoding for the residual data so as to obtain coded residual data; and writing the division manner of the image block, the division direction of the image block, an identifier indicating whether the image subblocks need subdivision, and the coded residual data into a bitstream. By applying the encoding method, better prediction accuracy can be achieved when the image block presents a small change of pixel value in the horizontal or vertical direction.

    SPATIAL DOMAIN PREDICTION ENCODING METHOD, DECODING METHOD, APPARATUS, AND SYSTEM
    8.
    发明申请
    SPATIAL DOMAIN PREDICTION ENCODING METHOD, DECODING METHOD, APPARATUS, AND SYSTEM 审中-公开
    空间域预测编码方法，解码方法，装置和系统

    公开(公告)号：US20130301730A1

    公开(公告)日：2013-11-14

    申请号：US13942378

    申请日：2013-07-15

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yongbing Lin ,  Changcai Lai

    IPC: H04N7/34

    CPC classification number: H04N19/105 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/593

    Abstract: In embodiments of the present invention, a first reference point and a second reference point that correspond to a prediction point are obtained from an upper reference edge and a left reference edge of a prediction block respectively according to a position of the prediction point in the prediction block and a prediction texture direction that corresponds to a prediction mode. Then linear interpolation is performed, according to the position of the prediction point, on the first reference point and the second reference point to obtain a predicted value of the prediction point.

    Abstract translation: 在本发明的实施例中，根据预测点在预测中的位置分别从预测块的上参考边和左参考边获得对应于预测点的第一参考点和第二参考点 块和对应于预测模式的预测纹理方向。 然后根据预测点的位置在第一参考点和第二参考点上执行线性插值，以获得预测点的预测值。

    Photographing apparatus and method
    9.
    发明授权
    Photographing apparatus and method 有权

    公开(公告)号：US12108161B2

    公开(公告)日：2024-10-01

    申请号：US17965083

    申请日：2022-10-13

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Xiaolei Chen ,  Jinxin Huang ,  Changcai Lai ,  Hongqi Hu ,  Changjiu Yang ,  Shisheng Zheng

    IPC: H04N5/265 ,  H04N9/64 ,  H04N23/72

    CPC classification number: H04N23/72 ,  H04N5/265 ,  H04N9/646

    Abstract: This application discloses a photographing apparatus and method, and relates to the field of image processing. When a high-quality image in a low illumination environment is obtained, costs are reduced, a size is reduced, and product compatibility is improved. The method includes: controlling a light filtering unit to: transparently transmit visible light in incident light and block infrared light in the incident light in a first image exposure interval, transparently transmit the infrared light in the incident light in a first time period of a second image exposure interval, and block the incident light in a second time period of the second image exposure interval; performing, by using an image sensor to obtain a first image, and performing photoelectric imaging on a light ray to obtain a second image; and synthesizing the first image and the second image, to generate a first target image.

    Optical path switching method and surveillance module
    10.
    发明授权
    Optical path switching method and surveillance module 有权

    公开(公告)号：US11930260B2

    公开(公告)日：2024-03-12

    申请号：US17730426

    申请日：2022-04-27

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Qingping Wang ,  Hongqi Hu ,  Ruihua Li ,  Changcai Lai ,  Shisheng Zheng ,  Yanlin Song

    IPC: H04N23/55 ,  G02B5/08 ,  G02F1/163 ,  G03B19/12

    CPC classification number: H04N23/55 ,  G02B5/0883 ,  G02F1/163 ,  G03B19/12

    Abstract: An optical path switching method is applied to a surveillance module. The method includes: determining a target magnification; and (i) when the target magnification is less than or equal to a maximum magnification of a camera, setting a magnification of the camera to the target magnification, determining that a reflection element is at a first location or in a first working state, and performing image capture by using the camera alone; or (ii) when the target magnification is greater than a maximum magnification of the camera, setting a magnification of the camera to a first magnification, determining that the reflection element is at a second location or in a second working state, and performing image capture by using both the camera and a teleconverter, where a product of the first magnification and a magnification of the teleconverter is the target magnification. The method increases a surveillance distance while reducing costs.

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