Extrinsic calibration of camera systems

A method performed by an extrinsic calibration system (ECCS) processor comprising:

• receiving images via a network interface from a surround view system (SVS), the SVS comprising four cameras mounted to front, back, left, and right sides of a vehicle respectively that are front, back, left, and right cameras, wherein each captured image comprises captured features from a calibration pattern located in front of each of the cameras;
• determining extrinsic calibration parameters (ECPs) for each camera from the image features that map coordinates of the features to camera coordinates and that are usable for subsequent normal operation of the cameras in capturing and displaying subsequent images;
• and
• storing, in a memory of the SVS, the ECPs that are accessible by the SVS during the subsequent normal operation.

At least one machine-readable medium including instructions, which when executed by a processor of an extrinsic camera calibration system (ECCS), cause the processor to:

• receive images via a network interface from a surround view system (SVS) comprising four cameras mounted to front, back, left, and right sides of a vehicle respectively that are front, back, left, and right cameras, wherein each captured image comprises captured features from a calibration pattern placed in front of each of the cameras;
• determine extrinsic calibration parameters (ECPs) for each camera from the image features that map coordinates of the features to camera coordinates and that are usable for subsequent normal operation of the cameras in capturing and displaying subsequent images;
• and
• store, in a memory of the SVS, the ECPs that are accessible by the SVS during the subsequent normal operation.

An extrinsic camera calibration system (ECCS) comprising:

• a surround view system (SVS) interface connecting the ECCS to the SVS, the SVS comprising:
• four cameras mounted to front, back, left, and right sides of a vehicle respectively;
• and
• at least one calibration pattern that comprises a set of features;
• and an extrinsic calibration processor;
• wherein the processor is to:
• receive, from each camera via the network interface, an image comprising captured features from the calibration pattern;
• and determine extrinsic calibration parameters (ECPs) for each camera that map coordinates of the features to camera coordinates, the ECPs being determined from the image features.