Object tracking method and object tracking device

An object tracking device, comprising:

• a non-transitory storage circuit, storing a program code;
• and
• a processor, coupled to the non-transitory storage circuit and accessing the program code to perform:
• in a tracking state, controlling an image-capturing device to capture a first image of a specific object, wherein a plurality of light emitting elements are disposed on the specific object, and at least one first light emitting element of the light emitting elements is on and captured in the first image;
• determining a first object pose of the specific object based on the at least one first light emitting element of the light emitting elements in the first image;
• obtaining at least one second light emitting element of the light emitting elements based on the first object pose, wherein the at least one second light emitting element is estimated to be uncapturable by the image-capturing device;
• and
• turning off the at least one second light emitting element.