Patent ID: 11869272
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 28:
29. A processor-implemented method, comprising:
acquiring an infrared (IR) image including an object and a depth image including the object;
generating a preprocessed IR image by emphasizing an edge component of the IR image;
generating a preprocessed depth image by either one or both of translating and rotating the object in the depth image based on feature points detected in a bounding region of the object included in the depth image, the feature points in the depth image being detected by matching positions of feature points detected in a bounding region of the object included in the IR image to the depth image; and
determining either one or both of a liveness and a biometric authentication of the object based on the preprocessed IR image and the preprocessed depth image,
wherein the generating of the preprocessed IR image comprises:
generating a first intermediate image based on pixel values of a current pixel and neighboring pixels of the current pixel in the IR image;
generating a second intermediate image by performing normalization on the IR image; and
generating the preprocessed IR image based on the IR image, the first intermediate image, and the second intermediate image.