Dual phase detection auto focus camera sensor data processing

An apparatus configured for image processing, the apparatus comprising:

• a memory configured to store image data;
• and
• a processor in communication with the PDAF sensor, the processor configured to:
• receive residual phase difference values associated with the image data from a phase detection auto focus (PDAF) sensor of a camera, the residual phase difference values resulting from subtracting phase difference pixel data associated with the two frames of image data;
• detect a region-of-interest change based on the residual phase differences values;
• and
• determine a focus for the camera based on the detected region-of-interest change.

An apparatus configured for image processing, the apparatus comprising:

• means for receiving residual phase difference values from a phase detection auto focus (PDAF) sensor of a camera, the residual phase difference values resulting from subtracting phase difference pixel data associated with two frames of image data to produce residual phase difference values;
• means for detecting a region-of-interest change based on the residual phase differences values;
• and
• means for determining a focus based on the detected region-of-interest change.

A non-transitory computer-readable storage medium storing instructions that, when executed, causes one or more processor to:

• receive residual phase difference values from a phase detection auto focus (PDAF) sensor of a camera, the residual phase difference values resulting from subtracting phase difference pixel data associated with two frames of image data to produce residual phase difference values;
• detect a region-of-interest change based on the residual phase differences values;
• and
• determine a focus for the camera based on the detected region-of-interest change.