Patent ID: 11908238
Assignee: NORTEK SECURITY & CONTROL
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A facial recognition system comprising:
an image input unit;
a feature extraction unit;
an index mapping unit;
a matching unit;
a processor, a non-transitory storage element coupled to the processor, encoded instructions stored in the non-transitory storage element, wherein the encoded instructions when implemented by the processor, configure the system to:
receive a video and/or image from a surveillance or access-control point for parsing into image frames or segments by the image input unit;
extract a feature descriptor using a constrained deformable part-based model (CDPM) that uses Histogram of Gradient (HoG) as part-based filters and trained by latent Support Vector Machine (SVM) to determine face feature point location and geometry by the feature extraction unit; and
match the extracted feature descriptor with at least one of a pre-stored facial image that is index-mapped, comprising at least a first and second round of matching, wherein the second round of matching only selects the index-mapped facial images that matched above a pre-defined threshold from the first round of matching by the matching unit.