| Abstract: | A reflective particle tag reader system includes a read head assembly
having a camera, illuminators, and a rigid frame portion for supporting
the camera and the illuminators. The illuminators illuminate a focal
point located opposite the camera where a reflective particle tag is
placed. A computer in data communication with the camera receives and
store images of the reflective particle tag that are acquired by the
camera. The computer is programmed to process video images and to
quantify a positional alignment parameter and an angular alignment
parameter of the reader with respect to the reflective particle tag. A
rapid burst of image frames is obtained in response to the positional
alignment and the angular alignment parameters being within a
predetermined tolerance and identity of the reflective tag is established
between a first image set and a second image set. |