Partial calibration target detection for improved vehicle sensor calibration

A system, comprising:

• one or more processors;
• memory including instructions that, when executed by the one or more processors, cause the system to:
• receive a captured image from an image sensor coupled to a motor vehicle, the captured image including at least one representation of a partial calibration target;
• identify a plurality of quadrilaterals within the captured image;
• determine a group of quadrilaterals corresponding to the at least one representation of the partial calibration target based on a relative proximity of the plurality of quadrilaterals to one another;
• determine a number of rows and a number of columns of the group of quadrilaterals wherein the number of rows and the number of columns of the group of quadrilaterals is dependent upon an applied image-based clustering technique;
• determine corners of the at least one representation of the partial calibration target in the captured image based on the number of rows and the number of columns of the group of quadrilaterals;
• and
• calibrate the image sensor based on the corners, the number of rows, and the number of columns of the at least one representation of the partial calibration target in the captured image.

A non-transitory computer-readable storage medium including instructions that, upon being executed by one or more processors of a computing system, cause the computing system to:

• receive a captured image from an image sensor coupled to a motor vehicle, the captured image including at least one representation of a partial calibration target;
• identify a plurality of quadrilaterals within the captured image;
• determine a group of quadrilaterals corresponding to the at least one representation of the partial calibration target based on a relative proximity of the plurality of quadrilaterals to one another;
• determine a number of rows and a number of columns of the group of quadrilaterals wherein the number of rows and the number of columns of the group of quadrilaterals is dependent upon an applied image-based clustering technique;
• determine corners of the at least one representation of the partial calibration target in the captured image based on the number of rows and the number of columns of the group of quadrilaterals;
• and
• calibrate the image sensor based on the corners, the number of rows, and the number of columns of the at least one representation of the partial calibration target in the captured image.