Automatic illumination switching for a scanning device using reflections

Patent metadata

Field	Value
Publication number	US-12387452-B2
Application number	US-202218050282-A
Country	US
Kind code	B2
Filing date	Oct 27, 2022
Priority date	Oct 27, 2022
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

Various embodiments herein relate to automatically switching illumination for a scanning device based on detected reflections. In this regard, a reflection shape is detected in at least a first image related to an object associated with a direct part marking (DPM) indicia. Based on the reflection shape, one or more characteristics associated with the object are determined. Based on the one or more characteristics associated with the object, an illumination mode is selected from a plurality of illumination modes. Additionally, an illumination is projected via an illumination unit based on the illumination mode to capture a second image related to the object associated with the DPM indicia.

First claim

The invention claimed is:

1. A system, comprising:
a processor; and
a memory that stores executable instructions that, when executed by the processor, cause the processor to:
capture a first image of an object via an initial illumination mode, the first image comprising at least a representation of illumination reflected from the object, wherein the representation of the illumination obscures at least a portion of a direct part marking (DPM) indicia of the object;
detect a reflection shape of the representation of the illumination in the first image of the object;

determine, based on the reflection shape, one or more characteristics associated with the object;
select, based on the one or more characteristics associated with the object, an illumination mode from a plurality of illumination modes; and
project an illumination via an illumination unit based on the selected illumination mode to capture a second image of the object.

2. The system of claim 1 , wherein the executable instructions further cause the processor to:
determine a shape of the object based on the reflection shape; and
select the illumination mode from the plurality of illumination modes based on the shape of the object.

3. The system of claim 1 , wherein the executable instructions further cause the processor to:
determine a surface type of the object based on the reflection shape; and
select the illumination mode from the plurality of illumination modes based on the surface type of the object.

4. The system of claim 1 , wherein the executable instructions further cause the processor to:
generate a feature set associated with the reflection shape;
apply the feature set to a machine learning model to determine a classification for the object; and
select the illumination mode from a plurality of illumination modes based on the classification for the object.

5. The system of claim 1 , wherein the executable instructions further cause the processor to:
generate a feature set associated with the reflection shape; and
apply the feature set to a machine learning model configured to determine the illumination mode from the plurality of illumination modes.

6. The system of claim 1 , wherein the executable instructions further cause the processor to:
alter one or more illumination characteristics of the illumination unit based on the one or more characteristics associated with the object.

7. The system of claim 1 , wherein the executable instructions further cause the processor to:
decode, from the second image, information associated with the DPM indicia on the object.

8. The system of claim 1 , wherein the executable instructions further cause the processor to:
determine a degree of reflection in the second image; and
decode, from the second image, information associated with the DPM indicia in response to a determination that the degree of reflection satisfies a defined reflection level.

9. The system of claim 1 , wherein the reflection shape is a first reflection shape, and wherein the executable instructions further cause the processor to:
detect a second reflection shape in the second image; and
decode, from the first image or the second image, information associated with the DPM indicia based on a comparison between the first reflection shape and the second reflection shape.

10. The system of claim 1 , wherein the plurality of illumination modes comprises at least two of a polarized illumination mode, a diffused illumination mode, a direct illumination mode, and a dark-field illumination mode.

11. A computer-implemented method, comprising:
capturing a first image of an object via an initial illumination mode, the first image comprising at least a representation of illumination reflected from the object, wherein the representation of the illumination obscures at least a portion of a direct part marking (DPM) indicia of the object;
detecting a reflection shape of the representation of the illumination in the first image of the object;
determining, based on the reflection shape, one or more characteristics associated with the object;
selecting, based on the one or more characteristics associated with the object, an illumination mode from a plurality of illumination modes; and
projecting an illumination via an illumination unit based on the selected illumination mode to capture a second image of the object.

12. The computer-implemented method of claim 11 , further comprising:
determining a shape of the object based on the reflection shape; and
selecting the illumination mode from the plurality of illumination modes based on the shape of the object.

13. The computer-implemented method of claim 11 , further comprising:
determining a surface type of the object based on the reflection shape; and
selecting the illumination mode from the plurality of illumination modes based on the surface type of the object.

14. The computer-implemented method of claim 11 , further comprising:
generating a feature set associated with the reflection shape;
applying the feature set to a machine learning model to determine a classification for the object; and
selecting the illumination mode from a plurality of illumination modes based on the classification for the object.

15. The computer-implemented method of claim 11 , further comprising:
generating a feature set associated with the reflection shape; and
applying the feature set to a machine learning model configured to determine the illumination mode from the plurality of illumination modes.

16. The computer-implemented method of claim 11 , further comprising:
altering one or more illumination characteristics of the illumination unit based on the one or more characteristics associated with the object.

17. The computer-implemented method of claim 11 , further comprising:
decoding, from the second image, information associated with the DPM indicia on the object.

18. The computer-implemented method of claim 11 , further comprising:
determining a degree of reflection in the second image; and
decoding, from the second image, information associated with the DPM indicia in response to a determination that the degree of reflection satisfies a defined reflection level.

19. The computer-implemented method of claim 11 , wherein the reflection shape is a first reflection shape, and the computer-implemented method further comprising:
detecting a second reflection shape in the second image; and
decoding, from the first image or the second image, information associated with the DPM indicia based on a comparison between the first reflection shape and the second reflection shape.

20. A computer program product comprising at least one non-transitory computer-readable storage medium having program instructions embodied thereon, the program instructions executable by a processor to cause the processor to:
capture a first image of an object via an initial illumination mode, the first image comprising at least a representation of illumination reflected from the object, wherein the representation of the illumination obscures at least a portion of a direct part marking (DPM) indicia of the object;
detect a reflection shape of the representation of the illumination in the first image of the object;
determine, based on the reflection shape, one or more characteristics associated with the object;
select, based on the one or more characteristics associated with the object, an illumination mode from a plurality of illumination modes; and
project an illumination via an illumi

Assignees

• Hand Held Prod Inc

Inventors

• Hejl Benjamin

Classifications

• G06T2207/10152

  Varying illumination · CPC title

• G06T9/00

  Image coding (bandwidth or redundancy reduction for static pictures H04N1/41; coding or decoding of static colour picture signals H04N1/64; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00) · CPC title

• G06V10/764

  using classification, e.g. of video objects · CPC title

• G06V10/60

  relating to illumination properties, e.g. using a reflectance or lighting model · CPC title

• G06V10/761

  Proximity, similarity or dissimilarity measures · CPC title