Invention Grant
- Patent Title: Feature-based image autofocus
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Application No.: US16912634Application Date: 2020-06-25
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Publication No.: US11381730B2Publication Date: 2022-07-05
- Inventor: Wen-Chun Feng , Hui Shan Kao
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Qualcomm Incorporated
- Main IPC: H04N5/232
- IPC: H04N5/232 ; H04N9/73 ; G06V40/16

Abstract:
Methods, systems, and devices for feature-based image autofocus are described. A device may perform an autofocus procedure that includes determining a set of features based on determining a feature region associated with an image. The device may generate a feature weight map based on the set of features and estimate a direction of a target feature in the feature region. The device may generate a direction weight map that corresponds to the feature region. The device may determine a focus position of the image based on the generated feature weight map and the estimated direction of the target feature and perform an autofocus operation on the determined focus position of the image. The device may calculate a focus value based on the feature weight map, and the focus position of the image may be based on the focus value.
Public/Granted literature
- US20210409609A1 FEATURE-BASED IMAGE AUTOFOCUS Public/Granted day:2021-12-30
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