公开(公告)号：US20230319429A1

公开(公告)日：2023-10-05

申请号：US17710228

申请日：2022-03-31

Applicant: Advanced Micro Devices, Inc.

Inventor： Po-Min Wang ,  Yu-Huai Chen ,  Wei-Chih Hung

IPC: H04N5/232 ,  G03B13/36

CPC classification number: H04N5/232125 ,  H04N5/232127 ,  G03B13/36

Abstract: Systems, apparatuses, and methods for estimating object distance with camera lens focus calibration are disclosed. A relationship between in-focus lens position and object distance is captured in a calibration phase for a plurality of object distances and lens positions for a given camera. The in-focus lens positions and corresponding object distances are stored as calibration data in a memory device of the given camera. Next, during operation of the given camera, a control circuit receives the in-focus lens position that was used to capture a given image. Then, the control circuit performs a lookup of the calibration data with the in-focus lens position to retrieve a corresponding object distance. Next, the corresponding object distance is used as an estimate of a distance to an object in the scene captured in the given image by the given camera.

公开(公告)号：US11653092B2

公开(公告)日：2023-05-16

申请号：US17485874

申请日：2021-09-27

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Wei-Chih Hung ,  Po-Min Wang

IPC: H04N5/232 ,  H04N5/369

CPC classification number: H04N5/232122 ,  H04N5/36961

Abstract: Enhanced phase detection for a PDAF sensor includes extracting pixel data from image data, the image data captured from an image capturing device having a phase detection autofocus (PDAF) sensor; extracting one or more features from the pixel data, including removing irrelevant pixel data; and determining a phase difference between the one or more features.

公开(公告)号：US20240003680A1

公开(公告)日：2024-01-04

申请号：US17855108

申请日：2022-06-30

Applicant: Advanced Micro Devices, Inc.

Inventor： Wei-Chih Hung ,  Po-Min Wang ,  Yu-Huai Chen

IPC: G01B11/22

CPC classification number: G01B11/22

Abstract: Techniques for generating a depth map are described. The techniques include obtaining a set of phase difference measurements with a phase detect sensor, and generating a depth map based on the set of phase difference measurements, utilizing a first set of calibration data correlating phase difference measurements with lens defocus data and a second set of calibration data correlating lens positions with object distances.

公开(公告)号：US20240003748A1

公开(公告)日：2024-01-04

申请号：US17853796

申请日：2022-06-29

Applicant: Advanced Micro Devices, Inc.

Inventor： Wei-Chih Hung ,  Po-Min Wang ,  Yu-Huai Chen

IPC: G01J9/00 ,  G02B7/36

CPC classification number: G01J9/00 ,  G02B7/36

Abstract: Techniques for performing phase detect operations are described. The techniques include obtaining first measurements with a set of half-shield phase-detect sensors; obtaining second measurements with a set of non-phase detect sensors that are not configured as phase-detect sensor; and determining a phase difference based on the first measurements and the second measurements.