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US 11,636,623 B2Granted
Systems and methods for camera alignment using pre-distorted targets
AssigneeMotional AD LLC
InventorsNijumudheen Muhassin, Yew Kwang Low, Jayesh Dwivedi
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Abstract
Provided are systems and methods for camera alignment using pre-distorted targets. Some methods described include selecting a configuration of shapes, and determining targets by pre-distorting the shapes according to the inverse of the distortion function of the lens system to be aligned. Images of pre-distorted targets are then compared to the original configuration of shapes, to perform camera alignment. Alignment is thus accomplished in simpler and more accurate manner. Systems and computer program products are also provided.
Claims20
A device comprising:
- at least one processor;
- and
- at least one memory storing instructions which, when executed by the at least one processor, cause the at least one processor to:
- determine at least one first shape based on projection of the at least one first shape through a first lens onto a first sensor causing generation of at least one predetermined second shape in a first image;
- and
- cause projection of the at least one first shape through a second lens onto a second sensor, wherein the projection of the at least one first shape through the second lens onto the second sensor causes generation of at least one second shape in a second image, wherein alignment of the second lens with the second sensor is based on a comparison of the at least one second shape to the at least one predetermined second shape.
3 more elements
A method comprising:
- determining a first pattern of shapes based on projection of the first pattern of shapes through a first lens onto a first sensor causing generation of a second pattern of shapes in a first image;
- and
- causing projection of the first pattern of shapes through a second lens onto a second sensor, wherein the projection of the first pattern of shapes through the second lens onto the second sensor causes generation of a third pattern of shapes in a second image, wherein alignment of the second lens with the second sensor is based on a comparison of the third pattern of shapes to the second pattern of shapes.
Dependencies are inferred from the claim text.