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Camera and light arrangement, showing the Near-Infrared (NIR) camera used to track special Near-Infrared Fiducial (NIRF) markers in a 2D greyscale image. This camera is registered to the plenoptic camera, a 3D lightfield camera used to quantify the XYZ location of each marker in metric coordinates. The NIR light emits light at 760 nm to excite the special markers, making them glow brightly in the NIR image.
