Method for extracting features from a flow of digital video frames, and corresponding system and computer program product
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United States of America Patent
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Feb 14, 2017
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app pub date -
Nov 14, 2013
filing date -
Nov 14, 2012
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Abstract
In an embodiment, digital video frames in a flow are subjected to a method of extraction of features including the operations of: extracting from the video frames respective sequences of pairs of keypoints/descriptors limiting to a threshold value the number of pairs extracted for each frame; sending the sequences extracted from an extractor module to a server for processing with a bitrate value variable in time; receiving the aforesaid bitrate value variable in time at the extractor as target bitrate for extraction; and limiting the number of pairs extracted by the extractor to a threshold value variable in time as a function of the target bitrate.
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