Image capture based on scanning resolution setting compared to determined scanning resolution relative to target distance in barcode reading
First Claim
1. An arrangement for electro-optically reading a target by image capture, comprising:
- a housing;
an aiming assembly for projecting an aiming light pattern on the target that is located within a range of working distances relative to the housing;
an imaging assembly for capturing an image of the target and of the aiming light pattern over a field of view;
a controller for determining a distance of the target relative to the housing based on a position of the aiming light pattern captured during a ranging frame, for determining a scanning resolution based on the determined distance, for comparing the determined scanning resolution with a scanning resolution setting, and for processing the image captured during a processing frame that occurs at a different time than the ranging frame;
wherein the controller is operative for rejecting the captured image when the determined scanning resolution is less than the scanning resolution setting, and for advising a user to change the distance of the target; and
wherein the controller is operative for accepting the captured image only if the determined scanning resolution is at least equal to the scanning resolution setting.
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Accused Products
Abstract
An arrangement for, and a method of, electro-optically reading a target by image capture, employ an aiming assembly for projecting an aiming light pattern on the target that is located within a range of working distances relative to a housing, an imaging assembly for capturing an image of the target and of the aiming light pattern over a field of view, and a controller for determining a distance of the target relative to the housing based on a position of the aiming light pattern in the captured image, for determining a scanning resolution based on the determined distance, for comparing the determined scanning resolution with a scanning resolution setting, and for processing the captured image based on the comparison.
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Citations
14 Claims
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1. An arrangement for electro-optically reading a target by image capture, comprising:
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a housing; an aiming assembly for projecting an aiming light pattern on the target that is located within a range of working distances relative to the housing; an imaging assembly for capturing an image of the target and of the aiming light pattern over a field of view; a controller for determining a distance of the target relative to the housing based on a position of the aiming light pattern captured during a ranging frame, for determining a scanning resolution based on the determined distance, for comparing the determined scanning resolution with a scanning resolution setting, and for processing the image captured during a processing frame that occurs at a different time than the ranging frame; wherein the controller is operative for rejecting the captured image when the determined scanning resolution is less than the scanning resolution setting, and for advising a user to change the distance of the target; and wherein the controller is operative for accepting the captured image only if the determined scanning resolution is at least equal to the scanning resolution setting. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of electro-optically reading a target by image capture, comprising the steps of:
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projecting an aiming light pattern on the target that is located within a range of working distances relative to a housing; determining a distance of the target relative to the housing based on a position of the aiming light pattern captured during a ranging frame; determining a scanning resolution based on the determined distance; comparing the determined scanning resolution with a scanning resolution setting; and processing an image of the target during a processing frame that occurs at a different time than the ranging frame based on the comparison of whether the determined scanning resolution is less than the scanning resolution setting, (1) if the determined scanning resolution is less than the scanning resolution setting, rejecting the captured image and advising a user to change the distance of the target, and (2) if the determined scanning resolution is at least equal to the scanning resolution setting, accepting the captured image. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification