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US 12,713,138 B2Granted
Optical scanner and image-acquisition method performed therewith
AssigneeDatalogic IP Tech S.R.L.
InventorsLuca Perugini, Simone Spolzino
Life of this patent
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Abstract
An image-acquisition method includes capturing, with an image sensor that includes a pixel array, a first image-set of a scene illuminated by an aimer-pattern. Each image of the first image-set includes a respective image-region detected by a plurality of pixels of the pixel array that define an aimer-illuminated region of the pixel array that at least in part determines a region-of-interest (ROI) of the pixel array. The method also includes determining an ROI exposure-setting based on ROI pixel-values of the first image-set generated by the ROI of the pixel array. The method also includes capturing a second image-set of the scene while the exposure setting of pixels of the aimer-illuminated region equals the ROI exposure-setting.
Claims20
An image-acquisition method comprising:
- capturing, with an image sensor that includes a pixel array, a first image-set of a scene illuminated by an aimer-pattern, each image of the first image-set including a respective image-region detected by a plurality of pixels of the pixel array that define an aimer-illuminated region of the pixel array that at least in part determines a region-of-interest (ROI) of the pixel array;
- determining an ROI exposure-setting based on ROI pixel-values of the first image-set generated by the ROI of the pixel array;
- capturing a second image-set of the scene while an exposure setting of pixels of the aimer-illuminated region equals the ROI exposure-setting, each image of the second image-set including a respective second image region detected by a second plurality of pixels of the pixel array that define a second aimer-illuminated region of the pixel array that at least in part determines a second ROI of the pixel array;
- determining an aimer-position-shift as a difference between a second location of the second aimer-illuminated region and a first location of the aimer-illuminated region;
- when the aimer-position-shift exceeds a threshold value, determining a second ROI exposure-setting based on ROI pixel-values of the second image-set generated by the second ROI of the pixel array, which includes one or more second plurality of pixels;
- and
- capturing a third image-set of the scene while the exposure setting of pixels of the aimer-illuminated region equals a third ROI exposure-setting.
4 more elements
An image-acquisition method comprising:
- capturing, with an image sensor that includes a pixel array, a first image-set of a scene illuminated by an aimer-pattern, each image of the first image-set including a respective image-region detected by a plurality of pixels of the pixel array that define an aimer-illuminated region of the pixel array that at least in part determines a region-of-interest (ROI) of the pixel array;
- determining an ROI exposure-setting based on ROI pixel-values of the first image-set generated by the ROI of the pixel array;
- capturing a second image-set of the scene while an exposure setting of pixels of the aimer-illuminated region equals the ROI exposure-setting;
- determining a distance between the pixel array and the scene;
- and
- determining an area of the ROI from the distance.
3 more elements
An image-acquisition method comprising:
- capturing, with an image sensor that includes a pixel array, a first image-set of a scene illuminated by an aimer-pattern, each image of the first image-set including a respective image-region detected by a plurality of pixels of the pixel array that define an aimer-illuminated region of the pixel array that at least in part determines a region-of-interest (ROI) of the pixel array;
- determining an ROI exposure-setting based on ROI pixel-values of the first image-set generated by the ROI of the pixel array;
- capturing a second image-set of the scene while an exposure setting of pixels of the aimer-illuminated region equals the ROI exposure-setting, each image of the second image-set including a respective second image region detected by a second plurality of pixels of the pixel array that define a second aimer-illuminated region of the pixel array that at least in part determines a second ROI of the pixel array;
- determining a second ROI exposure-setting based on ROI pixel-values of the second image-set generated by the second ROI of the pixel array, which includes one or more second plurality of pixels;
- and
- capturing a third image-set of the scene while the exposure setting of pixels of the aimer-illuminated region equals the second ROI exposure-setting.
3 more elements
An optical scanner comprising:
- an image sensor including a pixel array;
- a light emitter;
- and
- circuitry, communicatively coupled to the pixel array, that is configured to operate with the pixel array to image a scene illuminated by the light emitter by:
- capturing, with an image sensor that includes a pixel array, a first image-set of a scene illuminated by an aimer-pattern, each image of the first image-set including a respective image-region detected by a plurality of pixels of the pixel array that define an aimer-illuminated region of the pixel array that at least in part determines a region-of-interest (ROI) of the pixel array;
- determining an ROI exposure-setting based on ROI pixel-values of the first image-set generated by the ROI of the pixel array;
- and
- capturing a second image-set of the scene while an exposure setting of pixels of the aimer-illuminated region equals the ROI exposure-setting, each image of the second image-set including a respective second image region detected by a second plurality of pixels of the pixel array that define a second aimer-illuminated region of the pixel array that at least in part determines a second ROI of the pixel array;
- determining a second ROI exposure-setting based on ROI pixel-values of the second image-set generated by the second ROI of the pixel array, which includes one or more second plurality of pixels;
- and
- capturing a third image-set of the scene while the exposure setting of pixels of the aimer-illuminated region equals the second ROI exposure-setting.
8 more elements
Dependencies are inferred from the claim text.