公开(公告)号：US20140067863A1

公开(公告)日：2014-03-06

申请号：US14071153

申请日：2013-11-04

Applicant: Yahoo! Inc.

Inventor： Sergiy Bilobrov

IPC: G06F17/30

CPC classification number: G06F17/30268 ,  G06K9/00711 ,  G06K9/3233

Abstract: To identify a media item from a database of media items that have common content, a region of interest is defined to include a plurality of frames of a test fingerprint that correspond to different segments of a media item. A media identification system queries a database of reference fingerprints to identify candidate reference fingerprints that contain a frame that matches a frame of the test fingerprint. When a candidate reference fingerprint is found, additional matching frames are determined and the region of interest is reduced to eliminate the matched frames of the test fingerprint. This continues until the region of interest is empty or there are no further matching candidates. Once the set of candidate reference fingerprints are identified, the media identification system compares the test fingerprint to the candidates to determine a closest match, thereby identifying the media item associated with the test fingerprint.

Abstract translation: 为了从具有共同内容的媒体项目的数据库中识别媒体项目，将感兴趣的区域定义为包括对应于媒体项目的不同分段的测试指纹的多个帧。 媒体识别系统查询参考指纹的数据库，以识别包含与测试指纹的帧匹配的帧的候选参考指纹。 当找到候选参考指纹时，确定附加的匹配帧，并且减少感兴趣区域以消除测试指纹的匹配帧。 这一直延续到感兴趣的区域是空的，或者没有其他匹配的候选人。 一旦识别了候选参考指纹集，媒体识别系统将测试指纹与候选者进行比较，以确定最接近的匹配，从而识别与测试指纹相关联的媒体项目。

公开(公告)号：US09208790B2

公开(公告)日：2015-12-08

申请号：US13793952

申请日：2013-03-11

Applicant: Yahoo! Inc.

Inventor： Sergiy Bilobrov

IPC: G10L19/018 ,  G06F17/30 ,  G10L25/48 ,  G11B27/28

CPC classification number: G10L19/018 ,  G06F17/30743 ,  G06F17/30758 ,  G10L25/48 ,  G11B27/28

Abstract: An audio fingerprint is extracted from an audio sample, where the fingerprint contains information that is characteristic of the content in the sample. The fingerprint may be generated by computing an energy spectrum for the audio sample, resampling the energy spectrum logarithmically in the time dimension, transforming the resampled energy spectrum to produce a series of feature vectors, and computing the fingerprint using differential coding of the feature vectors. The generated fingerprint can be compared to a set of reference fingerprints in a database to identify the original audio content.

公开(公告)号：US09110928B2

公开(公告)日：2015-08-18

申请号：US14071153

申请日：2013-11-04

Applicant: Yahoo! Inc.

Inventor： Sergiy Bilobrov

IPC: G06K9/46 ,  G06K9/54 ,  G06F7/00 ,  G06F17/30 ,  G06K9/00 ,  G06K9/32

CPC classification number: G06F17/30268 ,  G06K9/00711 ,  G06K9/3233

Abstract: To identify a media item from a database of media items that have common content, a region of interest is defined to include a plurality of frames of a test fingerprint that correspond to different segments of a media item. A media identification system queries a database of reference fingerprints to identify candidate reference fingerprints that contain a frame that matches a frame of the test fingerprint. When a candidate reference fingerprint is found, additional matching frames are determined and the region of interest is reduced to eliminate the matched frames of the test fingerprint. This continues until the region of interest is empty or there are no further matching candidates. Once the set of candidate reference fingerprints are identified, the media identification system compares the test fingerprint to the candidates to determine a closest match, thereby identifying the media item associated with the test fingerprint.

Abstract translation: 为了从具有共同内容的媒体项目的数据库中识别媒体项目，将感兴趣的区域定义为包括对应于媒体项目的不同分段的测试指纹的多个帧。 媒体识别系统查询参考指纹的数据库，以识别包含与测试指纹的帧匹配的帧的候选参考指纹。 当找到候选参考指纹时，确定附加的匹配帧，并且减少感兴趣区域以消除测试指纹的匹配帧。 这一直延续到感兴趣的区域是空的，或者没有其他匹配的候选人。 一旦识别了候选参考指纹集，媒体识别系统将测试指纹与候选者进行比较，以确定最接近的匹配，从而识别与测试指纹相关联的媒体项目。

公开(公告)号：US20150125036A1

公开(公告)日：2015-05-07

申请号：US14594278

申请日：2015-01-12

Applicant: YAHOO! INC.

Inventor： Sergiy Bilobrov

IPC: G06K9/00 ,  G06T7/20 ,  G06K9/46

CPC classification number: G06K9/00067 ,  G06K9/00624 ,  G06K9/46 ,  G06K9/4604 ,  G06K2009/4666 ,  G06T1/00 ,  G06T1/0021 ,  G06T7/20

Abstract: A video fingerprinting algorithm extracts characteristic features from regions of interest in a media object, such as a video signal. The regions of interest contain the perceptually important parts of the video signal. A fingerprint may be extracted from a target media object, and the fingerprint the target media content may then be matched against multiple regions of interest of known reference fingerprints. This matching may allow identification of complex scenes, inserts, and different versions of the same content presented in, for example, different formats of the media object.

Abstract translation: 视频指纹算法从诸如视频信号的媒体对象中的感兴趣区域中提取特征特征。 感兴趣的区域包含视频信号的感知重要部分。 可以从目标媒体对象提取指纹，并且可以将目标媒体内容的指纹与已知参考指纹的多个感兴趣区域匹配。 该匹配可以允许识别在例如媒体对象的不同格式中呈现的相同内容的复杂场景，插入和不同版本。

公开(公告)号：US20130197913A1

公开(公告)日：2013-08-01

申请号：US13793952

申请日：2013-03-11

Applicant: YAHOO! INC.

Inventor： Sergiy Bilobrov

IPC: G10L19/018

CPC classification number: G10L19/018 ,  G06F17/30743 ,  G06F17/30758 ,  G10L25/48 ,  G11B27/28

Abstract: An audio fingerprint is extracted from an audio sample, where the fingerprint contains information that is characteristic of the content in the sample. The fingerprint may be generated by computing an energy spectrum for the audio sample, resampling the energy spectrum logarithmically in the time dimension, transforming the resampled energy spectrum to produce a series of feature vectors, and computing the fingerprint using differential coding of the feature vectors. The generated fingerprint can be compared to a set of reference fingerprints in a database to identify the original audio content.

Abstract translation: 从音频样本中提取音频指纹，其中指纹包含作为样本中的内容的特征的信息。 指纹可以通过计算音频样本的能量谱，在时间维度上对数重新采样能谱，变换再采样能谱以产生一系列特征向量，以及使用特征向量的差分编码来计算指纹来生成。 生成的指纹可以与数据库中的一组参考指纹进行比较，以识别原始音频内容。