Method and apparatus for operating indicia reading terminal including parameter determination

摘要

A method for operating an indicia reading terminal is provided wherein image information can be processed for determining a location of a decodable indicia representation for a certain frame of image data, the result of the processing can be utilized for determination of an imaging parameter, the imaging parameter can be utilized for capture of a subsequent frame and the subsequent frame can be subject to image processing.

主权项

1. A method for operating an indicia reading terminal for decoding of a decodable indicia, said indicia reading terminal including an image sensor and an imaging lens assembly for focusing of an image of said decodable indicia onto said image sensor, said indicia reading terminal being operative to capture at a frame rate a succession of frames of image data, said method comprising the steps of:
(a) processing image information to determine a location of a decodable indicia representation in a certain frame of image data; (b) determining one or more imaging parameter selectively utilizing frame image data corresponding to said location determined, via the processing image information, to be a location of a decodable indicia representation, wherein said one or more imaging parameter includes an imaging parameter of an imaging parameter type selected from the group consisting of an exposure period parameter, a gain parameter, and an illumination level parameter; wherein the processing referred to in step (a) and the determining referred to in step (b) are performed during a common trigger signal activation period, and (c) utilizing said one or more imaging parameter determined at step (b), capturing a subsequent frame of image data.