Systems And Arrangements For Object Identification

• US 20100039682A1
• Filed: 08/18/2009
• Published: 02/18/2010
• Est. Priority Date: 08/18/2008
• Status: Abandoned Application

• Current Assignee: Waterloo Industries Incorporated (Stanley Black & Decker, Inc.)
• Original Assignee: Waterloo Industries Incorporated (Stanley Black & Decker, Inc.)
• Inventors: Peot, Paul R., Menzies, Rupert, James, David Alun, Lodge, Graham, Johnson, Mark
• Application Number:
  US12/542,934
• Publication Number:
  US 20100039682A1
• Time in Patent Office: Days
• US Class Current: 358/474
• CPC Class Codes: H04N 1/00795 Reading arrangements details of scanning heads H04N1/024; scanning arrangements therefor H04N1/04
• CPC Class Codes: H04N 1/00827 Arrangements for reading an image from an unusual original, e.g. 3-dimensional objects
• CPC Class Codes: H04N 1/195 the array comprising a two-dimensional array or a combination of two-dimensional arrays

Abstract

An object identifying system includes an optical scanning device configured to record a series of linear images of successive portions of a support surface as the support surface is moved between first and second positions. A processor in electrical communication with the optical scanning device is configured to compile data corresponding to the series of linear images of the successive portions of the support surface to construct a digital image of the support surface. The processor is configured to compare the digital image of the support surface to at least one stored digital image of a known object to identify an object when the object is disposed on the support surface.

Claims

1. A method for identifying an object comprising:

placing an object on a support surface of a receptacle, the support surface including a repeating contrasting pattern;

optically scanning the support surface to produce a digital image of the support surface;

analyzing the digital image to identify portions of the repeating contrasting pattern interrupted by the object;

determining a shape of the object from the interrupted portions of the repeating contrasting pattern; and

comparing the determined shape of the object to stored data corresponding to predetermined shapes of known objects to identify the object.

2. The method of claim 1, wherein optically scanning the support surface to produce a digital image of the support surface comprises moving the support surface relative to an optical scanning device to produce a series of linear images, and compiling the linear images to produce the digital image.

3. The method of claim 2, wherein optically scanning the support surface further comprises optically scanning a calibration pattern proximate to the support surface, such that each one of the series of linear images includes a portion of the calibration pattern sufficient to identify a corresponding location of each one of the series of linear images.

4. The method of claim 1, further comprising directing a light source toward the support surface, wherein optically scanning the support surface comprises recording light from the light source reflected off the support surface and the object.

5. The method of claim 4, further comprising redirecting light reflected off the support surface and the object toward an optical scanning device using a mirror.

6. An object identifying system comprising:

an enclosure including a rear wall, first and second laterally spaced side walls, a top wall, and a front opening opposite the rear wall;

a drawer including a support surface for retaining at least one object, with at least a portion of the support surface including a repeating contrasting pattern, the drawer being assembled with the enclosure and movable between a retracted position in which the support surface is surrounded by the enclosure and an extended position in which the support surface extends from the front opening and is accessible for placement or removal of the at least one object;

an optical scanning device disposed within the enclosure proximate the rear wall;

a mirror secured to the enclosure proximate the front opening and above the support surface of the drawer, the mirror being oriented to redirect light reflected from a portion of the support surface under the mirror toward the optical scanning device; and

a processor in electrical communication with the optical scanning device;

wherein the optical scanning device is configured to record a series of linear images of successive portions of the support surface under the mirror when the drawer is moved between the retracted position and the extended position;

further wherein the processor is configured to compile data corresponding to the series of linear images of the successive portions of the support surface to construct a digital image of the support surface, the processor further being configured to compare the digital image of the support surface to at least one stored digital image of a known object to identify an object when the object is disposed on the support surface.

7. The object identifying system of claim 6, further comprising a support rail extending between the first and second sides of the enclosure, the mirror being supported by the rail.

8. The object identifying system of claim 7, further comprising a light source secured to the support rail, the light source being oriented to direct light toward a portion of the support surface directly below the mirror.

9. The object identifying system of claim 8, wherein the light source comprises a plurality of light emitting diodes in electrical communication with the processor.

10. The object identifying system of claim 9, wherein the plurality of light emitting diodes are configured to be pulsed at a first duty cycle when the drawer is stationary and at a second duty cycle greater than the first duty cycle when the processor detects movement of the drawer.

11. The object identifying system of claim 9, wherein the plurality of light emitting diodes are configured to be pulsed in synchronization with operation of the optical scanning device.

12. The object identifying system of claim 8, wherein the light source is arranged to provide a greater illumination intensity at positions laterally distal to the optical scanning device and a lesser illumination intensity at a position laterally aligned with the optical scanning device.

13. The object identifying system of claim 6, wherein the optical scanning device comprises an optical sensor and a lens secured to a support plate, the support plate being mounted to an internal surface of the rear wall of the enclosure.

14. The object identifying system of claim 13, wherein the optical scanning device further comprises at least one adjustment screw operable to adjust an orientation of the lens with respect to at least one of a horizontal axis parallel to the support surface and a vertical axis parallel to the rear wall.

15. The object identifying system of claim 13, wherein the optical scanning device is disposed at a position offset from a lateral centerline of the support surface, the optical scanning device being oriented at an angle with respect to the lateral centerline to compensate for the offset position.

16. The object identifying system of claim 6, comprising first and second drawers and first and second optical scanning devices for scanning a corresponding one of the first and second drawers.

17. The object identifying system of claim 6, comprising first and second support surfaces on the drawer and first and second optical scanning devices for scanning a corresponding one of the first and second support surfaces.

18. The object identifying system of claim 6, wherein the support surface comprises a recess in the drawer, the recess being shaped to receive the at least one object in a desired orientation.

19. The object identifying system of claim 6, wherein the processor is configured to determine the shape of the at least one object placed on the support surface by analyzing portions of the repeating contrasting pattern interrupted by the at least one object.

20. An object identifying system comprising:

an enclosure including a rear wall, first and second laterally spaced side walls, a top wall, and a front opening opposite the rear wall;

a first drawer assembled with the enclosure and including a first support surface for retaining at least a first object with at least a portion of the first support surface including a repeating contrasting pattern, the first drawer being movable between a retracted position in which the first support surface is surrounded by the enclosure and an extended position in which the first support surface extends from the front opening and is accessible for placement or removal of the first object;

a second drawer assembled with the enclosure and including a second support surface for retaining at least a second object with at least a portion of the second support surface including a repeating contrasting pattern, the second drawer being movable between a retracted position in which the second support surface is surrounded by the enclosure and an extended position in which the second support surface extends from the front opening and is accessible for placement or removal of the second object;

a first optical scanning arrangement disposed within the enclosure and configured to record a series of linear images of successive portions of the first support surface when the first drawer is moved between the retracted position and the extended position;

a second optical scanning arrangement disposed within the enclosure and configured to record a series of linear images of successive portions of the second support surface when the second drawer is moved between the retracted position and the extended position; and

a processor in electrical communication with the first and second optical scanning devices, wherein the processor is configured to compile data corresponding to the series of linear images of the successive portions of the first and second support surface to construct a digital images of the first and second support surfaces, the processor further being configured to compare the digital images of the first and second support surfaces to at least one stored digital image of a known object to identify an object when the object is disposed on either one of the first and second support surfaces.

21. An object identifying system comprising:

an enclosure including a rear wall, first and second laterally spaced side walls, a top wall, and a front opening opposite the rear wall;

a drawer assembled with the enclosure and including first and second laterally adjacent support surface for retaining at least corresponding first and second objects, with at least a portion of each of the first and second support surfaces including a repeating contrasting pattern, the drawer being movable between a retracted position in which the first and second support surfaces are surrounded by the enclosure and an extended position in which the first and second support surfaces extend from the front opening and are accessible for placement or removal of the first and second objects;

first and second optical scanning devices disposed within the enclosure proximate the rear wall;

a mirror secured to the enclosure proximate the front opening and above the first and second support surface of the drawer, the mirror being oriented to redirect light reflected from portions of the first and second support surfaces under the mirror toward a corresponding one of the first and second optical scanning devices; and

a processor in electrical communication with the optical scanning device;

wherein the first and second optical scanning devices are each configured to record a series of linear images of successive portions of the corresponding one of the first and second support surfaces under the mirror when the drawer is moved between the retracted position and the extended position; and

further wherein the processor is configured to compile data corresponding to the series of linear images of the successive portions of the first and second support surfaces to construct digital images of the first and second support surfaces, the processor further being configured to compare the digital images of the first and second support surfaces to at least one stored digital image of a known object to identify an object when the object is disposed on the support surface.