Patent ID: 11887337
Assignee: 7-ELEVEN, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. An object tracking system, comprising:
a sensor configured to capture frames of a global plane for at least a portion of a space, wherein:
the global plane represents (x,y) coordinates for the at least a portion of the space;
each frame comprises a plurality of pixels; and
each pixel from the plurality of pixels is associated with a pixel location comprising a pixel row and a pixel column;

a position sensor operably coupled to the sensor, wherein the position sensor is configured to output (x,y) coordinates corresponding with the physical location of the sensor within the space; and
a tracking system operably coupled to the sensor and the position sensor, comprising:
one or more memories operable to store a homography associated with the sensor located at a first (x,y) coordinate within the space, wherein the homography comprises coefficients that translate between pixel locations in a frame from the sensor and (x,y) coordinates in the global plane; and
one or more processors operably coupled to the one or more memories, configured to:
receive a second (x,y) coordinate within the space for the sensor from the position sensor, wherein the second (x,y) coordinate corresponds with a new physical location of the sensor within the space;
determine translation coefficients for the sensor based on a difference between the first (x,y) coordinate and the second (x,y) coordinate;
update the homography associated with the sensor by applying the translation coefficients to the homography; and
store the updated homography.