公开(公告)号：US10015541B2

公开(公告)日：2018-07-03

申请号：US14667839

申请日：2015-03-25

Applicant: Cisco Technology, Inc.

Inventor： Tal Maoz ,  Gal Moshitch ,  Aliza Itzkowitz ,  Zeev Geyzel ,  Reuven Wachtfogel

IPC: H04H60/32 ,  H04N21/434 ,  G06K9/00 ,  H04N21/234 ,  H04N21/84 ,  G06F17/30

CPC classification number: H04N21/4345 ,  G06F16/78 ,  G06F16/785 ,  G06F16/9014 ,  G06K9/00744 ,  G06K9/00758 ,  H04N21/23418 ,  H04N21/84

Abstract: In one embodiment, a system comprises a processor to retrieve a first data element including a value X0 and Y0, provide a hash function for use with a hash table having buckets, the hash function having a first and second input that in combination map to one of the buckets wherein the first input is in a range of X-values having X-value sub-ranges, the second input is in a range of Y-values having Y-value sub-ranges, different combinations of the X-value sub-ranges and the Y-value sub-ranges map using the hash function to different buckets, and input the value X0 and Y0 into the hash function yielding an output which is indicative of a first bucket of the hash-table. Related apparatus and methods are also described.

公开(公告)号：US09578394B2

公开(公告)日：2017-02-21

申请号：US14667805

申请日：2015-03-25

Applicant: Cisco Technology, Inc.

Inventor： Zeev Geyzel ,  Aliza Itzkowitz ,  Tal Maoz ,  Gal Moshitch ,  Ahuva Levkowitz

IPC: H04N21/835 ,  H04N21/234 ,  H04N1/32

CPC classification number: H04N21/835 ,  H04N1/32165 ,  H04N1/32267 ,  H04N19/00 ,  H04N19/136 ,  H04N19/186 ,  H04N21/23418 ,  H04N21/812

Abstract: In one embodiment, a system includes a processor to retrieve, from a memory, data of a video frame, the data including measurements of luminance, each of the measurements of luminance being associated with a different entry in a matrix, calculate a weighted average luminance value Ly for the measurements of luminance weighted according to a row position of the one measurement of luminance in the matrix, calculate a weighted average luminance value Lx for the measurements of luminance weighted according to a column position of the one measurement of luminance in the matrix, and create a video signature, S0, of the video frame, the video signature, S0, including the weighted average luminance value Ly and the weighted average luminance value Lx. Related apparatus and methods are also described.

Abstract translation: 在一个实施例中，系统包括处理器，用于从存储器检索视频帧的数据，所述数据包括亮度测量值，每个亮度测量值与矩阵中的不同条目相关联，计算加权平均亮度 根据矩阵中的一次亮度测量的行位置对根据行位置进行加权的亮度的测量值Ly计算根据矩阵中的一次亮度测量的列位置加权的亮度的测量值的加权平均亮度值Lx ，并且创建视频帧的视频签名S0，包括加权平均亮度值Ly和加权平均亮度值Lx的视频签名S0。 还描述了相关装置和方法。

公开(公告)号：US20160283477A1

公开(公告)日：2016-09-29

申请号：US14667839

申请日：2015-03-25

Applicant: Cisco Technology, Inc.

Inventor： Tal MAOZ ,  Gal Moshitch ,  Aliza Itzkowitz ,  Zeev Geyzel ,  Reuven Wachtfogel

IPC: G06F17/30 ,  H04N21/434 ,  H04N21/84 ,  G06K9/00 ,  H04N21/234

CPC classification number: H04N21/4345 ,  G06F17/30802 ,  G06F17/30817 ,  G06F17/30949 ,  G06K9/00744 ,  G06K9/00758 ,  H04N21/23418 ,  H04N21/84

Abstract: In one embodiment, a system comprises a processor to retrieve a first data element including a value X0 and Y0, provide a hash function for use with a hash table having buckets, the hash function having a first and second input that in combination map to one of the buckets wherein the first input is in a range of X-values having X-value sub-ranges, the second input is in a range of Y-values having Y-value sub-ranges, different combinations of the X-value sub-ranges and the Y-value sub-ranges map using the hash function to different buckets, and input the value X0 and Y0 into the hash function yielding an output which is indicative of a first bucket of the hash-table. Related apparatus and methods are also described.

Abstract translation: 在一个实施例中，系统包括处理器以检索包括值X0和Y0的第一数据元素，提供与具有桶的散列表一起使用的散列函数，散列函数具有组合映射到一个的第一和第二输入 其中第一输入在具有X值子范围的X值的范围内，第二输入在具有Y值子范围的Y值的范围内，X值子级的不同组合 -ranges和Y值子范围使用散列函数映射到不同的桶，并将值X0和Y0输入到散列函数中，产生表示散列表的第一个桶的输出。 还描述了相关装置和方法。