Patent ID: 11948401
Assignee: NIGHTINGALE.AI CORP.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. The method of claim 1 for performing feature extraction and posture recognition of a Person of Interest (POI), wherein the method further comprises:
calculating key points of the POI in a series of video frames;
performing geometric operations on the calculated key points to extract feature data;
performing linear interpolation operations on the extracted feature data to determine missing feature data;
dividing the video frames into a batch of m video frames, where m refers to a number of video frames in the batch, that correspond to m groups of feature data;
feeding the m groups of feature data into an artificial neural network;
obtaining confidence scores of posture and optionally gait for the POI in the m video frames based on the output of the artificial neural network;
determining a weighted average of confidence scores for each of the video frames; and
confirming a posture classification and optionally a gait classification for each of the video frames by comparing the weighted average of confidence scores for each of the video frames.