CPC G06V 40/45 (2022.01) [G06T 5/003 (2013.01); G06T 5/20 (2013.01); G06V 10/30 (2022.01); G06V 40/161 (2022.01); G06T 2207/20084 (2013.01); G06T 2207/30201 (2013.01)] | 23 Claims |
1. A processor-implemented method with liveness detection, comprising:
receiving a plurality of phase images of different phases, captured by a multi-phase detection image sensor;
generating a plurality of preprocessed phase images by performing preprocessing, including edge enhancement processing, on the plurality of phase images of different phases;
generating a plurality of differential images based on a result of determining a respective difference in pixel values between the preprocessed phase images;
generating a plurality of low-resolution differential images having lower resolutions than the differential images, based on a result of reducing a respective size of the differential images;
generating a minimum map image based on the low-resolution differential images, the minimum map image representing a minimum difference value among difference values between the low-resolution differential images; and
performing a liveness detection on an object in the phase images based on the minimum map image.
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