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US 12,693,407 B2Granted
Detecting system and detecting method for movement trajectory
AssigneeWistron Corporation
InventorsShu Shiuan Ho, Yao-Tsung Chang, Yin-Yu Chen, Yu Hsuan Chen
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Abstract
The present invention provides a detecting system and a detecting method for movement trajectory. The detecting method includes: transmitting a radar signal to a detection area to receive a corresponding reflected signal; obtaining a point cloud according to the reflected signal; generating a movement trajectory according to the point cloud; and displaying information associated with the movement trajectory through a graphical user interface.
Claims18
A detecting system for movement trajectory, comprising:
- a display device, displaying a graphical user interface;
- a radar, transmitting a radar signal to a detection area to receive a corresponding reflected signal;
- and
- a processor, coupled to the radar and the display device and configured to:
- obtain a point cloud comprising a plurality of sampling points derived from the reflected signal, wherein each of the plurality of sampling points has an associated timestamp;
- group the point cloud to obtain a plurality of groups, comprising:
- grouping a plurality of sampling points having timestamps within a first time period from the point cloud to obtain a first group among the plurality of groups,
- generate a plurality of bounding boxes respectively corresponding to the plurality of groups, wherein the plurality of bounding boxes comprise a first bounding box corresponding to the first group;
- generate a movement trajectory based on the plurality of bounding boxes;
- calculate a difference between a timestamp of an earliest sampled sampling point and a timestamp of the latest sampled sampling point in the first bounding box to determine a dwell time of a subject at a location of the first bounding box;
- determine a color of the first bounding box according to the dwell time;
- and
- display information associated with the movement trajectory through the graphical user interface,
- wherein the information comprises the color of the first bounding box.
11 more elements
A detecting method for movement trajectory, comprising:
- transmitting a radar signal to a detection area to receive a corresponding reflected signal;
- obtaining a point cloud comprising a plurality of sampling points derived from the reflected signal, wherein each of the plurality of sampling points has an associated timestamp;
- grouping the point cloud to obtain a plurality of groups, comprising:
- grouping a plurality of sampling points having timestamps within a first time period from the point cloud to obtain a first group among the plurality of groups,
- generating a plurality of bounding boxes respectively corresponding to the plurality of groups, wherein the plurality of bounding boxes comprise a first bounding box corresponding to the first group;
- generating a movement trajectory according to the plurality of bounding boxes;
- calculating a difference between a timestamp of an earliest sampled sampling point and a timestamp of the latest sampled sampling point in the first bounding box to determine a dwell time of a subject at a location of the first bounding box;
- determining a color of the first bounding box according to the dwell time;
- and
- displaying information associated with the movement trajectory through a graphical user interface,
- wherein the information comprises the color of the first bounding box.
8 more elements
Dependencies are inferred from the claim text.