Invention Grant
- Patent Title: In-line chromatic aberration correction in wide dynamic range (WDR) image processing pipeline
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Application No.: US17555145Application Date: 2021-12-17
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Publication No.: US11743612B2Publication Date: 2023-08-29
- Inventor: Gang Hua , Rajasekhar Reddy Allu , Mihir Narendra Mody , Niraj Nandan , Mayank Mangla , Pandy Kalimuthu
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Michael T. Gabrik; Frank D. Cimino
- Main IPC: H04N25/611
- IPC: H04N25/611 ; G06T3/40 ; G06T1/60 ; H04N25/13

Abstract:
In the advanced driver-assistance systems (ADAS) field, RAW sensor image processing for machine vision (MV) applications can be of critical importance. Due to red/green/blue (RGB) image components being focused by the lens at different locations in image plane, the lateral chromatic aberration (LCA) phenomenon may sometimes be observed, which causes false color around edges in the final image output, especially for high contrast edges, which can impede MV applications. Disclosed herein are low-latency, efficient, optimized designs for chromatic aberration correction (CAC) modules. In some embodiments, an in-pipeline CAC design is used that: is configured to perform on-the-fly CAC without any out-of-pipeline memory traffic; enables use of wide dynamic range (WDR) sensors; uses bicubic interpolation; supports vertical and horizontal chromatic aberration red/blue color channel offsets, reduces CAC line memory requirements, and supports flexible look-up table (LUT) down-sampling factors to improve the spatial precision of correction and accommodate popular image sensor resolutions.
Public/Granted literature
- US20230199339A1 IN-LINE CHROMATIC ABERRATION CORRECTION IN WIDE DYNAMIC RANGE (WDR) IMAGE PROCESSING PIPELINE Public/Granted day:2023-06-22
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