Leveraging high dynamic range (HDR) maps for improved auto focus
AssigneeQUALCOMM Incorporated
InventorsShridhar Prakash Patil, Abhijeet Dey, Shrey Shailesh Gadiya
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Abstract
Systems and techniques are described herein for focusing. For instance, a process can include obtaining a plurality of images captured based on a plurality of different exposures; obtaining a high dynamic range (HDR) map generated based on the plurality of images, wherein the HDR map indicates weights that are applicable to the plurality of different exposures for portions of an image; selecting, based on the HDR map, a first phase detection (PD) pixel data stream associated with a first exposure of the plurality of different exposures; and generating lens position information for focusing a lens based on the first PD pixel data stream for capturing a future image.
Claims20
An apparatus for focusing, comprising:
- at least one memory;
- and
- at least one processor coupled to the at least one memory, the at least one processor configured to:
- obtain a plurality of images captured based on a plurality of different exposures;
- obtain a high dynamic range (HDR) map generated based on the plurality of images, wherein the HDR map indicates weights that are applicable to the plurality of different exposures for portions of an image;
- select, based on the HDR map, a first phase detection (PD) pixel data stream associated with a first exposure of the plurality of different exposures;
- and
- generate lens position information for focusing a lens based on the first PD pixel data stream for capturing a future image.
A method for focusing by an image capturing device, comprising:
- obtaining a plurality of images captured based on a plurality of different exposures;
- obtaining a high dynamic range (HDR) map generated based on the plurality of images, wherein the HDR map indicates weights that are applicable to the plurality of different exposures for portions of an image;
- selecting, based on the HDR map, a first phase detection (PD) pixel data stream associated with a first exposure of the plurality of different exposures;
- and
- generating lens position information for focusing a lens based on the first PD pixel data stream for capturing a future image.
Dependencies are inferred from the claim text.