Hybrid auto focus tracking method and hybrid auto focus tracking device

A hybrid auto focus tracking device, the hybrid auto focus tracking device comprising:

• a memory, storing executable instructions, and
• a processor configured to execute the executable instructions to:
• determine a first lens focusing position based on a phase difference of a phase detection image output by a phase detection image sensor;
• determine a second lens focusing position based on a zoom ratio of feature points within a region of interest in a scene image output by the phase detection image sensor;
• determine a final lens focusing position by fusing the first lens focusing position and the second lens focusing position;
• and
• perform focus tracking of the phase detection image sensor based on the final lens focusing position.

A hybrid auto focus tracking method, the hybrid auto focus tracking method comprising:

• determining a first lens focusing position based on a phase difference of a phase detection image output by a phase detection image sensor;
• determining a second lens focusing position based on a zoom ratio of feature points within a region of interest in a scene image output by the phase detection image sensor;
• determining a first confidence of the first lens focusing position, wherein the first confidence indicates a reliability that the first lens focusing position is able to be the final lens focusing position;
• determining a second confidence of the second lens focusing position, wherein the second confidence indicates a reliability that the second lens focusing position is able to be the final lens focusing position;
• determining a final lens focusing position by fusing the first lens focusing position and the second lens focusing position based on the first confidence and the second confidence;
• and
• performing refocusing based on the difference between the final lens focusing position and a lens current focusing position.