- Patent Title: Temporal high dynamic range imaging using time-of-flight cameras
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Application No.: US16020272Application Date: 2018-06-27
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Publication No.: US10999524B1Publication Date: 2021-05-04
- Inventor: Markus Stefan Duelli , Cory Keitz , Lorenzo Sorgi , Christopher Samuel Zakian
- Applicant: Amazon Technologies, Inc.
- Applicant Address: US WA Seattle
- Assignee: Amazon Technologies, Inc.
- Current Assignee: Amazon Technologies, Inc.
- Current Assignee Address: US WA Seattle
- Agency: Athorus, PLLC
- Main IPC: H04N5/235
- IPC: H04N5/235 ; G01S7/486 ; G01S17/89 ; G06T7/521 ; G01S17/894 ; G01S7/497 ; H04N13/271

Abstract:
A time-of-flight camera may be used to generate depth images of a scene, where the scene includes retroreflective materials. The time-of-flight camera may capture first sensor data by illuminating the scene at a first energy level, and by exposing a sensor for a first duration. If portions of the sensor are saturated by light reflected from retroreflective materials, corrupted pixels are detected within the first sensor data. A second set of sensor data may be captured by illuminating the scene at a second energy level, or by exposing the sensor for a second duration. The corrupted pixels may be identified and masked from the first sensor data, which may be blended with corresponding portions of the second sensor data to generate a depth image.
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