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

Claim 21:
22. The device of claim 21, wherein to perform the AI-based method for performing feature extraction and posture recognition of the POI, the at least one processor is configured to:
calculate key points of the POI in a series of video frames;
perform geometric operations on the calculated key points to extract feature data;
perform linear interpolation operations on the extracted feature data to determine missing feature data;
divide 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;
feed the m groups of feature data into an artificial neural network;
obtain confidence scores of posture and optionally gait for the POI in the m video frames based on the output of the artificial neural network;
determine a weighted average of confidence scores for each of the video frames; and
confirm 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.