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    Method and apparatus for encoding a video signal by using a modified block truncation coding method
    81.
    发明授权
    Method and apparatus for encoding a video signal by using a modified block truncation coding method 失效
    通过使用修改的块截断编码方法对视频信号进行编码的方法和装置

    公开(公告)号：US5699122A

    公开(公告)日：1997-12-16

    申请号：US617587

    申请日：1996-03-19

    申请人： Hae-Mook Jung

    发明人： Hae-Mook Jung

    IPC分类号： H04N19/90 ,  G06T9/00 ,  H03M7/30 ,  H04N1/41 ,  H04N7/24 ,  H04N19/00 ,  H04N7/12

    CPC分类号： G06T9/005 ,  H04N19/13 ,  H04N19/60 ,  H04N19/91

    摘要： A video signal is encoded to provide a coded video signal, wherein a frame of the video signal is divided into a multiplicity of nonoverlapping blocks and each of the blocks contains K.times.L pixels, K and L being positive integers, by the steps of: dividing K.times.L pixels included in a block into a bright group and a dark group based on intensity values of the pixels; deciding a bit plane which contains K.times.L binary pixels, each of the binary pixels denoting either the bright or the dark group where a corresponding pixel in the block belongs to; dividing the bit plane to N subblocks each of which contains M binary pixels; deciding N majority values each of which represents a more frequently occurring binary pixel value for each of the N subblocks, and for providing a modified bit plane which contains the N majority values as its N binary pixel values; providing a restored bit plane which consists of N subblocks each of which contains M binary pixels having a value corresponds to one of the N majority values; determining a sample mean and a sample variance of the block; determining two reconstruction values which denote a representative intensity value of the pixels included in the bright or the dark group; and combining the two reconstruction values, and the modified bit plane, to thereby provide a block of the coded video signal.

    摘要翻译： 编码视频信号以提供编码视频信号，其中视频信号的帧被划分为多个非重叠块，并且每个块包含K×L个像素，K和L为正整数，步骤为：将KxL 基于像素的强度值将包括在块中的像素组成亮组和暗组; 决定包含KxL二进制像素的位平面，每个二进制像素表示块中相应像素所属的亮组或暗组; 将位平面除以N个子块，每个子块包含M个二进制像素; 决定N个多数值，其中每个N个表示N个子块中的每一个的更频繁出现的二进制像素值，并且用于提供包含N个多数值作为其N个二进制像素值的修改的位平面; 提供恢复的位平面，其由N个子块组成，每个子块包含具有对应于N个多数值中的一个的M个二进制像素; 确定块的样本均值和样本方差; 确定表示亮组或暗组中包括的像素的代表性强度值的两个重建值; 并且将两个重建值和修改的位平面组合，从而提供编码视频信号的块。

    Image information processor in which residual information is stored in a blank area of a field memory
    82.
    发明授权
    Image information processor in which residual information is stored in a blank area of a field memory 失效
    剩余信息存储在场存储器的空白区域中的图像信息处理器

    公开(公告)号：US5313296A

    公开(公告)日：1994-05-17

    申请号：US911396

    申请日：1992-07-10

    申请人： Mitsuharu Ohki

    发明人： Mitsuharu Ohki

    IPC分类号： H04N5/14 ,  H04N5/232 ,  H04N11/04 ,  H04N19/00 ,  H04N19/423 ,  H04N19/426 ,  H04N19/50 ,  H04N19/513 ,  H04N19/537 ,  H04N19/57 ,  H04N19/59 ,  H04N19/85 ,  H04N19/90 ,  H04N1/41 ,  H04N1/417

    CPC分类号： H04N5/23254 ,  H04N5/145 ,  H04N5/23248

    摘要： An image information processing apparatus includes a detector for detecting the move vector of an image of the present relative to that of the preceding field; a circuit for processing, on the basis of the move vector, the image of the present field stored in a field memory; and a residual memory for storing the residual information calculated during the period in which the image data of one horizontal scanning line is inputted. The residual information stored in the residual memory is shunted into a blank area of the field memory during a predetermined interval after the period in which the image data is input. The processing circuit performs a wobble correction to correct any shaking of the image between fields or compresses the data quantity of the dynamic image in image transmission, and the information of one entire picture is processed after being divided into a plurality of blocks, whereby the storage capacity of the residual memory can be widely reduced.

    摘要翻译： 图像信息处理装置包括：检测器，用于检测当前图像相对于前一场的图像的移动向量; 基于移动矢量处理存储在场存储器中的当前场的图像的电路; 以及剩余存储器，用于存储在输入一条水平扫描线的图像数据的期间中计算的残差信息。 存储在剩余存储器中的残留信息在输入图像数据的周期之后的预定间隔期间被分流到场存储器的空白区域。 处理电路进行摆动校正以校正场之间的图像的任何抖动，或者压缩图像传输中的动态图像的数据量，并且在分割成多个块之后处理一个整个图像的信息，由此存储 剩余记忆能力可以大大降低。

    METHOD FOR DETERMINING VIDEO CODING TEST SEQUENCE, ELECTRONIC DEVICE AND COMPUTER STORAGE MEDIUM
    86.
    发明申请
    METHOD FOR DETERMINING VIDEO CODING TEST SEQUENCE, ELECTRONIC DEVICE AND COMPUTER STORAGE MEDIUM 有权

    公开(公告)号：US20220415046A1

    公开(公告)日：2022-12-29

    申请号：US17902521

    申请日：2022-09-02

    申请人： Beijing Baidu Netcom Science Technology Co., Ltd.

    发明人： Jiaojiao ZHANG

    IPC分类号： G06V20/40 ,  H04N19/90

    摘要： An method for determining a video coding test sequence, an electronic device, and a computer readable storage medium are provided. The method includes: determining a candidate video set including multiple candidate videos corresponding to a target service requirement; classifying the candidate videos by content categories to obtain a target distribution of content categories; clustering the candidate videos by values of a preset coding complexity to obtain multiple video classes; selecting from each of the video classes respectively a target class-representative video such that an actual distribution of content categories is consistent with the target distribution of content categories; and constructing a target video coding test sequence based on the target class-representative videos.

    Systems and methods for spatial prediction
    87.
    发明授权
    Systems and methods for spatial prediction 有权

    公开(公告)号：US11432001B2

    公开(公告)日：2022-08-30

    申请号：US15458919

    申请日：2017-03-14

    申请人： VID SCALE, INC.

    发明人： Yan Ye ,  Qian Chen ,  Jie Dong

    IPC分类号： H04N19/52 ,  H04N19/119 ,  H04N19/11 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/124 ,  H04N19/14 ,  H04N19/80 ,  H04N19/90 ,  H04N19/60 ,  H04N19/59 ,  H04N19/182

    摘要： Systems, methods, and instrumentalities are disclosed relating to intra prediction of a video signal based on mode-dependent subsampling. A block of coefficients associated with a first sub block of a video block, one or more blocks of coefficients associated with one or more remaining sub blocks of the video block, and an indication of a prediction mode for the video block may be received. One or more interpolating techniques, a predicted first sub block, and the predicted sub blocks of the one or more remaining sub blocks may be determined. A reconstructed first sub block and one or more reconstructed remaining sub blocks may be generated. A reconstructed video block may be formed based on the prediction mode, the reconstructed first sub block, and the one or more reconstructed remaining sub blocks.

    Image and video processing apparatuses and methods
    89.
    发明授权
    Image and video processing apparatuses and methods 有权

    公开(公告)号：US10951920B2

    公开(公告)日：2021-03-16

    申请号：US16429891

    申请日：2019-06-03

    申请人： Huawei Technologies Co., Ltd.

    发明人： Itsik Dvir ,  Natan Peterfreund

    IPC分类号： H04N19/60 ,  H04N19/182 ,  H04N19/44 ,  H04N19/20 ,  G06F17/14 ,  G06F17/13 ,  H04N19/90

    摘要： The disclosure relates to an image processing apparatus for compressing or decompressing a segment of an image, the segment being non-rectangular and comprising a plurality of pixels, each pixel comprising a pixel value, the pixel values of the plurality of pixels forming a pixel value vector, the apparatus comprising: a processor configured to compress the segment or configured to decompress the segment, wherein compressing the segment comprises computing a plurality of expansion coefficients by expanding the pixel value vector into a plurality of basis vectors, wherein the basis vectors are discrete approximations of solutions of a boundary value problem of the Helmholtz equation on the segment of the image; and wherein decompressing the segment comprises computing the pixel value vector by forming a linear combination of the basis vectors according to the plurality of expansion coefficients.