Indicia reading terminals and methods employing light field imaging

摘要

A terminal for decoding decodable indicia includes a plenoptic imaging subsystem comprising an image sensor array and plenoptic imaging optics operable to project a plenoptic image of a space containing the decodable indicia onto the image sensor array, a hand held housing encapsulating a least a portion of the plenoptic imaging subsystem, a trigger for initiating operation of the plenoptic imaging subsystem to obtain plenoptic image data of the decodable indicia, and an illumination source for projecting illumination onto the decodable indicia; an aimer for projecting an aimer pattern onto the decodable indicia. The terminal is operable, responsive to detecting that the trigger has been actuated by an operator, to obtain plenoptic image data from the image sensor array, to obtain first rendered image data based on at least a portion of the plenoptic image data, and to attempt to decode the decodable indicia represented in the rendered image data.

主权项

1. An indicia reading terminal, comprising:
a plenoptic imaging subsystem comprising an image sensor array and plenoptic imaging optics operable to project a first plenoptic image of a space containing a decodable indicia onto the image sensor array; an illumination source for projecting illumination onto the decodable indicia; wherein the indicia reading terminal is operable to:
obtain first plenoptic image data from the image sensor array;adjust at least one operating parameter of the indicia reading terminal based on the first plenoptic image data;project a second plenoptic image of the space containing the decodable indicia onto the image sensor array;obtain a first rendered image based on at least a portion of the second plenoptic image data; andattempt to decode the decodable indicia represented in the first rendered image; wherein the at least one operating parameter comprises:
an exposure period of the image sensor array;operation of the illumination subsystem for projecting illumination onto the decodable indicia;an exposure period of the image sensor array and operation of the illumination subsystem for projecting illumination onto the decodable indicia;a gain of the plenoptic image signals read out of the image sensor array; and/ora frame rate at which the indicia reading terminal captures frames of image data.