Processing short video to obtain frequency information
| DWPI Title: System for identifying dominant frequency in video signal, has processor for generating looped signal based upon sub-signal, identifying frequency in acquired signal based on Q looped signals, and outputting identified frequency with bounds |
| Abstract: Described are various technologies pertaining to identifying a dominant frequency in an acquired signal, such as a frequency corresponding to a human heartbeat in an acquired video signal. In connection with identifying the dominant frequency, a sub-signal of the acquired signal is extracted from the acquired signal, where the sub-signal includes Nsamples number of samples (frames). A looped signal is generated by looping the sub-signal. Nsamples is incremented, and the process is repeated until Nsamples is equivalent to a predefined threshold; accordingly, numerous looped signals are formed. The dominant frequency is identified based upon the looped signal and presented with the corresponding uncertainty based on harmonic analysis. |
| Use: System for facilitating identifying a dominant frequency in a signal i.e. video signal, in a time domain, frequency domain and spatio-temporal domain. |
| Advantage: The method effectively removes distortion, mitigates interference, improves signal quality, and reduces signal noise in the signal. |
| Novelty: The system (100) has a memory (104) and processor (102) for receiving a signal, where the signal (110) is based upon output of a signal capture device (108). A sub-signal is extracted from the acquired signal, where the sub-signal comprises N samples of the acquired signal. A looped signal is generated based upon the sub-signal, where the looped signal comprises several instances of the sub-signal appended to one another. N samples are incremented by one sample. A dominant frequency in the acquired signal is identified based upon the Q looped signals. The identified dominant frequency with uncertainty bounds is outputted. |
| Filed: 1/18/2024 |
| Application Number: US18415935A |
| Tech ID: SD 16351.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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