Microsoft Technology Licensing, LLC

Apar Singhal

Lei Zhang

Oron Nir

Avner Levi

Irit Ofer

Haim Sabo

Ika Bar-Menachem

Eylon Ami

Ella Ben Tov

Tucker Cunningham Burns

Maria Zontak

Anika Zaman

The technology described herein is directed to systems, methods, and software for indexing video. In an implementation, a method comprises identifying one or more regions of interest around target content in a frame of the video. Further, the method includes identifying, in a portion of the frame outside a region of interest, potentially empty regions adjacent to the region of interest. The method continues with identifying at least one empty region of the potentially empty regions that satisfies one or more criteria and classifying at least the one empty region as a negative sample of the target content. In some implementations, the negative sample of the target content in a set of negative samples of the target content, with which to train a machine learning model employed to identify instances of the target content.

Negative sampling algorithm for enhanced image classification

The technology described herein is directed to a media indexer framework including a character recognition engine that automatically detects and groups instances (or occurrences) of characters in a multi-frame animated media file. More specifically, the character recognition engine automatically detects and groups the instances (or occurrences) of the characters in the multi-frame animated media file such that each group contains images associated with a single character. The character groups are then labeled and used to train an image classification model. Once trained, the image classification model can be applied to subsequent multi-frame animated media files to automatically classifying the animated characters included therein.

Semi supervised target recognition in video

Semi supervised animated character recognition in video

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Apar Singhal