US 12,254,670 B2
Radar-based activity classification
Souvik Hazra, Munich (DE); and Avik Santra, Munich (DE)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Jul. 29, 2022, as Appl. No. 17/877,575.
Prior Publication US 2024/0037908 A1, Feb. 1, 2024
Int. Cl. G06V 10/764 (2022.01); G01S 13/89 (2006.01); G06V 10/82 (2022.01); G06V 10/84 (2022.01); G06V 40/20 (2022.01)
CPC G06V 10/764 (2022.01) [G01S 13/89 (2013.01); G06V 10/82 (2022.01); G06V 10/84 (2022.01); G06V 40/23 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving raw data from a millimeter-wave radar sensor;
generating a first radar-Doppler image based on the raw data;
generating a first radar point cloud based on the first radar-Doppler image;
using a graph encoder to generate a first graph representation vector indicative of one or more relationships between two or more parts of a target based on the first radar point cloud;
generating a first cadence velocity diagram indicative of a periodicity of movement of one or more parts of the target based on the first radar-Doppler image; and
classifying an activity of the target based on the first graph representation vector and the first cadence velocity diagram.