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    PRIORITY-BASED VIDEO ENCODING AND TRANSMISSION
    21.
    发明申请
    PRIORITY-BASED VIDEO ENCODING AND TRANSMISSION 有权

    公开(公告)号：US20210274200A1

    公开(公告)日：2021-09-02

    申请号：US17252697

    申请日：2019-06-27

    Applicant: Apple Inc.

    Inventor： Sorin C. Cismas ,  Jim C. Chou ,  Ling Su ,  Keangpo R. Ho

    IPC: H04N19/37 ,  H04N19/176 ,  H04N19/169 ,  H04N19/63 ,  H04N19/164 ,  H04N19/167 ,  H04N19/46 ,  H04N19/174 ,  H04N19/119

    Abstract: A video encoding system in which pixel data is decomposed into frequency bands prior to encoding. The frequency bands are organized into blocks that are provided to a block-based encoder that encodes the blocks and passes the encoded blocks to a wireless interface that packetizes the blocks for transmittal over a wireless connection. The encoder may categorize the encoded frequency bands into multiple priority levels, and may tag each frequency block with metadata indicating the frequency band represented in the block, the priority of the frequency band, and timing information. The wireless interface may then transmit or drop packets according to the priority levels of the encoded frequency blocks in the packets and/or according to the timing information of the frequency blocks in the packets.

    Method and apparatus for performing transform using layered givens transform
    23.
    发明授权
    Method and apparatus for performing transform using layered givens transform 有权

    公开(公告)号：US11025957B2

    公开(公告)日：2021-06-01

    申请号：US15886548

    申请日：2018-02-01

    Applicant: LG Electronics Inc.

    Inventor： Moonmo Koo ,  Onur Guleryuz

    IPC: H04N19/63 ,  H04N19/60 ,  H04N19/91 ,  H04N19/124 ,  G06F17/14

    Abstract: A method for performing a transform by using Layered Givens Transform may include: deriving at least one rotation layer, a first permutation layer and a second permutation layer based on a given transform matrix H and an error parameter; obtaining a Layered Givens Transform (LGT) coefficient based on the rotation layer, the first permutation layer and the second permutation layer; and performing quantization and entropy encoding with respect to the LGT coefficient, the first permutation layer and the second permutation layer may include a permutation matrix obtained by permuting a row of an identity matrix, and the LGT coefficient may be obtained by sequentially applying the first permutation layer, the rotation layer and the second permutation layer respectively.

    ENABLING SECURE VIDEO SHARING BY EXPLOITING DATA SPARSITY
    25.
    发明申请
    ENABLING SECURE VIDEO SHARING BY EXPLOITING DATA SPARSITY 有权

    公开(公告)号：US20210027499A1

    公开(公告)日：2021-01-28

    申请号：US17068798

    申请日：2020-10-12

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Raghuraman Gopalan

    IPC: G06T9/00 ,  H04N19/625 ,  H04N19/63 ,  H04N19/62 ,  H04N19/426

    Abstract: In one example, the present disclosure describes a device, computer-readable medium, and method for enabling secure video sharing by exploiting data sparsity. In one example, the method includes applying a transformation to a video dataset containing a plurality of video samples, to produce a plurality of sparse vectors in a first dimensional space, wherein each sparse vector of the plurality of sparse vectors corresponds to one video sample of the plurality of video samples, and multiplying each sparse vector of the plurality of sparse vectors by a transformation matrix to produce a plurality of reduced vectors in a second dimensional space, wherein the dimension of the second dimensional space is smaller than a dimension of the first dimensional space, and wherein the plurality of reduced vectors in the second dimensional space hides information about the video dataset while preserving relational properties between the plurality of video samples.

    Image encoding apparatus and control method therefor
    26.
    发明授权
    Image encoding apparatus and control method therefor 有权

    公开(公告)号：US10897615B2

    公开(公告)日：2021-01-19

    申请号：US15603646

    申请日：2017-05-24

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Dai Miyauchi

    IPC: H04N19/176 ,  H04N19/15 ,  H04N19/61 ,  H04N19/192 ,  H04N19/124 ,  H04N19/436 ,  H04N19/186 ,  H04N19/146 ,  H04N19/63

    Abstract: An image encoding apparatus includes a plane conversion unit which generates, from image data of one frame of the moving image data, a plurality of planes each formed from a single component, a frequency conversion unit which generates a plurality of subbands for each plane by performing frequency conversion for each plane, a quantization unit which quantizes coefficients in each subband using a quantization parameter, an encoder which encodes the quantized coefficient data, and a control unit which updates the quantization parameter so that a code amount of the encoded data becomes equal to a target code amount set for each plane. The control unit updates the quantization parameter by accumulating a difference between the target code amount set for each plane and a generated code amount of each plane, and distributing the accumulated differences to the plurality of planes.

    Processing image data using tiered bit-layers
    27.
    发明授权
    Processing image data using tiered bit-layers 有权

    公开(公告)号：US10893297B2

    公开(公告)日：2021-01-12

    申请号：US15933048

    申请日：2018-03-22

    Applicant: Apical Ltd

    Inventor： Ozgur Tasdizen ,  Evren Cesur

    IPC: G06K9/46 ,  H04N19/63

    Abstract: Examples of the present disclosure relate to methods for processing image data. In one such example, data elements are received defining a portion of a line of pixels of an image, the image comprising one or more lines of pixels definable by one or more respective sets of data elements. In some cases, a transform operation is performed on the data elements to obtain a plurality of binary transform coefficients, wherein the transform operation is performed independently of data elements defining any other line of pixels. The plurality of transform coefficients is encoded as a sequence of tiered bit-layers, each bit-layer in the sequence of bit-layers comprising a set of bits corresponding to a given bit position in each of the plurality of transform coefficients. The encoded plurality of transform coefficients is output.

    Feature compensated borehole image coding
    30.
    发明授权
    Feature compensated borehole image coding 有权

    公开(公告)号：US10743012B2

    公开(公告)日：2020-08-11

    申请号：US15379666

    申请日：2016-12-15

    Applicant: Schlumberger Technology Corporation

    Inventor： Andriy Gelman

    IPC: H04N5/38 ,  H04N19/136 ,  H04N19/176 ,  H04N19/63 ,  H04N19/65 ,  H04N19/124 ,  H04N19/91 ,  H04N19/44 ,  H04N19/12 ,  E21B47/12

    Abstract: Image block transmission includes reading an image block from a downhole sensor. Based on the image block, a set of formation features attributes for the image block are detected. The set of formation features attributes describe a structural property of a subsurface formation. Based on the set of formation feature attributes, a wavelet transform function is modified to obtain a modified wavelet transform function. The modified wavelet transform function is applied to the image block to obtain a set of wavelet transform coefficients for the image block. The image block transmission further includes generating an encoded bit stream comprising the set of formation features attributes and the set of wavelet transform coefficients for the image block, and transmitting the encoded bit stream.

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