System and method for adaptive correction factor subsampling for geometric correction in an image processing system

A method comprising:

• storing, in a memory of a camera system, a adaptively subsampled look-up table, wherein the adaptively subsampled look-up includes adaptive subsampling within different portions of the adaptively subsampled look-up table;
• capturing, by a camera of the camera system, an image, wherein the captured image is distorted based on varying distortions within an optical system of the camera;
• receiving, by a processor of the camera system, the captured image from the camera;
• correcting the distorted captured image based on the adaptively subsampled look-up table to create a correct image;
• and
• executing an operation based on the corrected image.

A calibration system comprising:

• a memory to store a full look-up table;
• and
• a processor to communicate with the memory, the processor configured to:
• iteratively divide the full look-up table into a plurality of patches, subsample the each of the plurality of patches at a subsampling, and create a adaptively subsampled look-up table based on the subsampling;
• determine, during each iteration, whether the adaptively subsampled look-up table creates a corrected image with a predetermined quality level;
• in response to the corrected image not having the predetermined quality level to:
• sub-divide a first patch of the plurality of patches in a plurality of sub-patches;
• subsample the each of the plurality of sub-patches at an adaptive subsampling, and update the adaptively subsampled look-up table based on the subsampling;
• and
• determine whether the adaptively subsampled look-up table creates the corrected image with the predetermined quality level;
• in response to the adaptively subsampled look-up table creating the corrected image with the predetermined quality level, store the subsampling for a portion of the adaptively subsampled look-up table;
• and
• in response to all portions of the adaptively subsampled look-up table being assigned a particular subsampling, store the adaptively subsampled look-up table in a memory of the camera system of the vehicle.