Invention Grant
- Patent Title: Video fingerprinting based on Fourier transform of histogram
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Application No.: US16502649Application Date: 2019-07-03
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Publication No.: US11546656B2Publication Date: 2023-01-03
- Inventor: Juikun Chen
- Applicant: Roku, Inc.
- Applicant Address: US CA San Jose
- Assignee: Roku, Inc.
- Current Assignee: Roku, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C
- Main IPC: H04N21/222
- IPC: H04N21/222 ; H04N21/234 ; H04N21/24 ; H04N21/262 ; H04N21/435 ; H04N21/437 ; H04N21/44 ; H04N21/81 ; H04N21/84 ; H04N21/4402 ; G06F16/00 ; G06F16/783 ; G06V10/50 ; G06V10/42 ; G06V20/40

Abstract:
A content device and method is disclosed to include a processing device to process streaming video content. A fingerprinter receives captured frames of the streaming video content and, for each frame of a plurality of the captured frames, generates a one-dimensional histogram function of pixel values and transforms the histogram function with a Fast Fourier Transform (FFT), to generate a plurality of complex values for the frame. The fingerprinter further, for each of the plurality of complex values, assigns a binary one (“1”) when a real part of the complex value is greater than zero (“0”) and assigns a binary zero (“0”) when the real part is less than or equal to zero, to generate a plurality of bits. The fingerprinter further concatenates a specific number of the bits to generate a fingerprint for the frame.
Public/Granted literature
- US20190327525A1 Video Fingerprinting Based on Fourier Transform of Histogram Public/Granted day:2019-10-24
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