Patent ID: 11957441
Assignee: CONTINUSE BIOMETRICS LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A system for determining flow characteristics of an object, the system comprising a processing unit adapted for receiving and processing recorded video including a plurality of sequentially sampled frames from the object being illuminated, said processing comprising:
dividing the recorded video, comprising a plurality of secondary speckle patterns originated from at least a portion of the object, into a plurality of time-wise slices,
calculating autocorrelation function for pixels in the frames of the time-wise slices and extracting a decorrelation decay time for each of said time-wise slices and for each of said pixels, corresponding to each spatial point of said plurality of secondary speckle patterns, as a function of a distance from a point of illumination, corresponding to a penetration depth of the illumination at said spatial point, and
based on the decorrelation decay time, performing a statistical analysis of the plurality of secondary speckle patterns in a time-domain and generating statistical decorrelation data thereof being indicative of the flow characteristics of the object at different penetration depths of said illumination, thereby enabling to identify low blood flow or a blockage in blood vessels.