发明名称 |
Feature-based Video Annotation |
摘要 |
A system and methodology provide for annotating videos with entities and associated probabilities of existence of the entities within video frames. A computer-implemented method identifies an entity from a plurality of entities identifying characteristics of video items. The computer-implemented method selects a set of features correlated with the entity based on a value of a feature of a plurality of features, determines a classifier for the entity using the set of features, and determines an aggregation calibration function for the entity based on the set of features. The computer-implemented method selects a video frame from a video item, where the video frame having associated features, and determines a probability of existence of the entity based on the associated features using the classifier and the aggregation calibration function. |
申请公布号 |
US2017046573(A1) |
申请公布日期 |
2017.02.16 |
申请号 |
US201514823946 |
申请日期 |
2015.08.11 |
申请人 |
Google Inc. |
发明人 |
Varadarajan Balakrishnan;Toderici George Dan;Natsev Apostol;Khandelwal Nitin;Vijayanarasimhan Sudheendra;Yang Weilong;Shetty Sanketh |
分类号 |
G06K9/00;G06K9/52;G06K9/62;H04N5/265 |
主分类号 |
G06K9/00 |
代理机构 |
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代理人 |
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主权项 |
1. A computer-implemented method for annotating videos with entities and associated probabilities of existence of the entities within video frames, the method comprising:
identifying an entity from a plurality of entities identifying characteristics of video items; selecting a set of features correlated with the entity based on a value of a feature of a plurality of features; determining a classifier for the entity using the set of features; determining an aggregation calibration function for the entity based on the set of features; selecting a video frame from a video item, the video frame having associated features; and determining a probability of existence of the entity based on the associated features using the classifier and the aggregation calibration function. |
地址 |
Mountain View CA US |