US 12,225,294 B2
Automatic tracking method and tracking system applied to pan-tilt-zoom camera device
Jen-Hung Yeh, New Taipei (TW); Chao-Hung Chang, New Taipei (TW); and Yi-Chang Yang, New Taipei (TW)
Assigned to AVER INFORMATION INC., New Taipei (TW)
Filed by Aver Information Inc., New Taipei (TW)
Filed on Feb. 3, 2023, as Appl. No. 18/163,983.
Claims priority of application No. 111105087 (TW), filed on Feb. 11, 2022.
Prior Publication US 2023/0262334 A1, Aug. 17, 2023
Int. Cl. H04N 23/695 (2023.01); H04N 23/67 (2023.01)
CPC H04N 23/695 (2023.01) [H04N 23/675 (2023.01)] 11 Claims
OG exemplary drawing
 
1. An automatic tracking method applied to the a pan-tilt-zoom (PTZ) camera device, in which a first preset range and a second preset range are set in an image capturing range of the PTZ camera device, comprising:
performing a real-time tracking mode when a target object exists in the first preset range, and a capture position of a first lens of the PTZ camera device is adjusted following a movement of the target object;
recording an object distance value and performing a region tracking mode to adjust the capture position of the first lens of the PTZ camera device according to the second preset range and to track the target object within the second preset range when the target object exists in the second preset range; and
switching the region tracking mode to the real-time tracking mode when the object distance value of the target object is changed.