An object tracking method, the method comprising: determining a first target tracking state by tracking a target from a first image frame with a first field of view, FoV; determining a second FoV based on the first FoV and the first target tracking state; and generating a second target tracking result by tracking a target from a second image frame with the second FoV; wherein the first FoV and the second FoV are selected from predetermined reference FoVs; wherein the determining of the first target tracking state comprises: generating a first target tracking result by tracking the target from the first image frame; and determining the first target tracking state based on the first target tracking result; wherein the first target tracking result comprises a prediction confidence, and either one or both of a target position and a target size, and wherein the determining of the first target tracking state based on the first target tracking result comprises: obtaining at least one of a target relative displacement corresponding to the first image frame and a ratio between a size of the target of the first image frame and a size of the first image frame, based on either one or both of the target position and the target size; and determining the first target tracking state based on a result of a comparison of the prediction confidence and a preset threshold, and either one or both of a result of a comparison of the target relative displacement and a reference displacement and a result of a comparison of the ratio and a reference ratio. determining a first target tracking state by tracking a target from a first image frame with a first field of view, FoV; determining a second FoV based on the first FoV and the first target tracking state; and generating a second target tracking result by tracking a target from a second image frame with the second FoV; wherein the first FoV and the second FoV are selected from predetermined reference FoVs; wherein the determining of the first target tracking state comprises: generating a first target tracking result by tracking the target from the first image frame; and determining the first target tracking state based on the first target tracking result; generating a first target tracking result by tracking the target from the first image frame; and determining the first target tracking state based on the first target tracking result; wherein the first target tracking result comprises a prediction confidence, and either one or both of a target position and a target size, and wherein the determining of the first target tracking state based on the first target tracking result comprises: obtaining at least one of a target relative displacement corresponding to the first image frame and a ratio between a size of the target of the first image frame and a size of the first image frame, based on either one or both of the target position and the target size; and determining the first target tracking state based on a result of a comparison of the prediction confidence and a preset threshold, and either one or both of a result of a comparison of the target relative displacement and a reference displacement and a result of a comparison of the ratio and a reference ratio. obtaining at least one of a target relative displacement corresponding to the first image frame and a ratio between a size of the target of the first image frame and a size of the first image frame, based on either one or both of the target position and the target size; and determining the first target tracking state based on a result of a comparison of the prediction confidence and a preset threshold, and either one or both of a result of a comparison of the target relative displacement and a reference displacement and a result of a comparison of the ratio and a reference ratio. <EOS>