Invention Grant
- Patent Title: Method for fixed pattern noise reduction and use of such method
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Application No.: US15868362Application Date: 2018-01-11
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Publication No.: US10171763B2Publication Date: 2019-01-01
- Inventor: Emanuel Johansson , Jesper Bengtsson , Thomas Winzell
- Applicant: Axis AB
- Applicant Address: SE Lund
- Assignee: Axis AB
- Current Assignee: Axis AB
- Current Assignee Address: SE Lund
- Agency: Snyder, Clark, Lesch & Chung, LLP
- Priority: EP17152224 20170119
- Main IPC: H04N5/217
- IPC: H04N5/217 ; H04N5/365 ; H04N5/378 ; G06K9/62 ; G06T5/00

Abstract:
An apparatus is disclosed for structural fixed pattern noise reduction in a video stream. A method may include, for each target pixel in a first image frame, defining a first target pixel patch, and defining a first search area comprising the first target pixel patch; for each pixel in the first search area, comparing a first pixel patch around the pixel with the first target pixel patch, and using the pixel when calculating an average for the target pixel. The method may include, in a second image frame, localizing a second target pixel, and defining a second search area comprising the second target pixel; for each pixel in the second search area, comparing a second pixel patch around the pixel of the second search area with the first target pixel patch, and using the pixel in the second search area when calculating an average for the target pixel.
Public/Granted literature
- US20180205898A1 METHOD FOR FIXED PATTERN NOISE REDUCTION AND USE OF SUCH METHOD Public/Granted day:2018-07-19
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