EVALUATION APPARATUS USING UNIFORM ILLUMINATION AND DATA CAPTURE

• US 20170091941A1
• Filed: 11/12/2015
• Published: 03/30/2017
• Est. Priority Date: 09/24/2014
• Status: Abandoned Application

• Current Assignee: Don Atkinson
• Original Assignee: Don Atkinson
• Inventors: Atkinson, Don
• Application Number:
  US14/939,535
• Publication Number:
  US 20170091941A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01J 3/0202 Mechanical elements; Supports for optical elements
• CPC Class Codes: G01J 3/0262 Constructional arrangements for removing stray light
• CPC Class Codes: G01J 3/10 Arrangements of light sources specially adapted for spectrometry or colorimetry
• CPC Class Codes: G01J 3/50 using electric radiation detectors
• CPC Class Codes: G01J 3/524 Calibration of colorimeters
• CPC Class Codes: G03B 11/045 Lens hoods or shields
• CPC Class Codes: G03B 11/06 Lens caps for exposure making
• CPC Class Codes: G03B 17/566 Accessory clips, holders, shoes to attach accessories to camera if integral part of camera body G03B17/02
• CPC Class Codes: G03B 43/00 Testing correct operation of photographic apparatus or parts thereof
• CPC Class Codes: G06T 2207/10024 Color image
• CPC Class Codes: G06T 2207/30204 Marker
• CPC Class Codes: G06T 7/80 Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• CPC Class Codes: H04N 17/002 for television cameras
• CPC Class Codes: H04N 23/12 with one sensor only
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/56 provided with illuminating means
• CPC Class Codes: H04N 23/71 Circuitry for evaluating the brightness variation
• CPC Class Codes: H04N 23/73 by influencing the exposure time
• CPC Class Codes: H04N 23/84 for processing colour signals
• CPC Class Codes: H04N 9/64 Circuits for processing colour signals H04N9/77 takes precedence; camera processing pipelines for processing colour signals H04N23/84

Abstract

An evaluation apparatus is proposed for a digital data gathering device that accepts incoming light through a lens of the digital data gathering device. The evaluation apparatus includes a light shroud having an enclosing wall, which substantially surrounds the lens and extends a predetermined distance outward, forming a distal edge portion. An illumination source is provided to be in selective communication with an interior of the light shroud. The light shroud prevents ambient light from entering the interior of the light shroud when a substantial entirety of the distal edge portion of the enclosing wall is in touching contact with an object.

Claims

1. An evaluation apparatus for digital data gathering devices that can ensure uniform evaluation results from two or more of said digital data gathering devices, said digital data gathering devices accepting incoming light through a lens, said evaluation apparatus comprising:

a light shroud having an enclosing wall, said enclosing wall substantially surrounding said lens and extending a predetermined distance outwardly therefrom and defining a distal edge portion;

an illumination source in selective communication with an interior of said light shroud thereby preventing ambient light from entering said interior of said light shroud when a substantial entirety of said distal edge portion of said enclosing wall is in touching contact with an object;

a calibration device arranged within said light shroud, said calibration device selectively reflecting light from said illumination source; and

wherein said evaluation apparatus alters subsequent digital data gathering by said evaluation device in dependence upon said reflected light, thereby ensuring said uniform evaluation results from any of said digital data gathering devices having said calibration device.

2. The evaluation apparatus according to claim 1, wherein:

said digital data gathering device is one of a digital camera, a tablet device and a smart phone.

3. The evaluation apparatus according to claim 2, wherein:

said light shroud is selectively positionable between a first position and a second position, said first position where said light shroud substantially surrounds said lens of said digital camera, and said second position where said light shroud does not substantially surround said lens.

4. The evaluation apparatus according to claim 1, wherein:

said illumination source is one of an array of one or more LED'"'"'s arranged within said interior of said light shroud, and a flash apparatus of said digital data gathering device.

5. The evaluation apparatus according to claim 1, wherein:

said calibration device comprises one or more color patches arranged to be exposed to said light issuing from said illumination device and captured within said light shroud.

6. The evaluation apparatus according to claim 1, wherein:

said calibration device is a calibration disk, said calibration disk having at least one marking thereon such that said illumination reflects from said marking and is received through said lens of said digital data gathering device.

7. The evaluation apparatus according to claim 6, wherein:

said calibration disk is removably affixed to said distal edge portion of said shroud.

8. The evaluation apparatus according to claim 6, wherein:

said at least one calibration marking is comprised of a plurality of gray scale markings.

9. The evaluation apparatus according to claim 6, wherein:

said at least one calibration marking is comprised of a plurality of color shade markings.

10. The evaluation apparatus according to claim 1, further comprising:

calibration markings arranged about an inner surface of said enclosing wall, said calibration markings being exposed to illumination issuing from said illumination device such that said illumination reflects from said calibration markings and is received through said lens of said digital data gathering device.

11. The evaluation apparatus according to claim 1, further comprising:

an ambient light sensor, said ambient light sensor being arranged to be in communication with said interior of said light shroud, said ambient light sensor indicating when said ambient light is present within said interior when said substantial entirety of said distal edge portion of said light shroud is in touching contact with said object.

12. A method for uniform evaluation of light entering through a lens of two or more digital data gathering devices, said method comprising the steps of:

forming a light shroud to have an enclosing wall, said enclosing wall substantially surrounding said lens and extending a predetermined distance outwardly therefrom, said light shroud further defining a distal edge portion;

positioning an illumination source to be in selective communication with an interior of said light shroud;

placing a substantial entirety of said distal edge portion of said light shroud in touching contact with an object, thereby preventing ambient light from entering said interior of said light shroud;

arranging a calibration device within said light shroud and selectively illuminating said calibration device by said illumination source during an initial exposure operation; and

performing subsequent exposure operations of said digital data gathering devices, said subsequent exposure operations enabling said digital data gathering devices to gather digital data pertaining to said object, wherein said digital data is altered in dependence upon said initial exposure operation, thereby ensuring said uniform evaluation results from any of said digital data gathering devices having said calibration device.

13. The method for calibrating and evaluating light entering through said lens of said digital data gathering device according to claim 12, further comprising the steps of:

forming said illumination device to be one of an array of one or more LED'"'"'s arranged within said interior of said light shroud, and a flash apparatus of said digital data gathering device.

14. The method for calibrating and evaluating light entering through said lens of said digital data gathering device according to claim 12, further comprising the steps of:

including one or more markings on said calibration device for reflecting said illumination from said markings and through said lens;

determining the difference between acquired digital data derived from said reflected illumination, and a database of predetermined digital data, said predetermined digital data being particular to said calibration device.

15. The method for calibrating and evaluating light entering through said lens of said digital data gathering device according to claim 14, further comprising the steps of:

recording said adjusted digital data for said object.

16. The method for calibrating and evaluating light entering through said lens of said digital data gathering device according to claim 12, further comprising the steps of:

evaluating said digital data as color data.

17. The method for calibrating and evaluating light entering through said lens of said digital data gathering device according to claim 12, further comprising the steps of:

evaluating said digital data as medical data.

18. The method for calibrating and evaluating light entering through said lens of said digital data gathering device according to claim 12, further comprising the steps of:

forming said digital data gathering device to be one of a digital camera, a tablet device and a smart phone.

19. A method of enabling uniform digital data gathering and evaluation by light entering through a lens of two or more digital data gathering devices, to assist in product matching, said method comprising the steps of:

selectively affixing a light shroud to substantially surround said lens of said digital data gathering devices;

calibrating said digital data gathering devices in dependence upon an initial illumination and data capture by said digital data gathering device;

performing a subsequent illumination and data capture of an object, said subsequent illumination and data capture reflecting a product value of said object;

altering said product value of said subsequent illumination and data capture in dependence upon said initial illumination and data capture, thereby ensuring said uniform digital data gathering and evaluation from any of said digital data gathering devices having said calibration device; and

searching for products that match said altered product value.

20. The method of utilizing digital data gathered by light entering through a lens of a digital data gathering device to assist in product matching, according to claim 19, and further comprising the steps of:

utilizing said altered product value to determine a color of said object that is to be matched.

21. The method of utilizing digital data gathered by light entering through a lens of a digital data gathering device to assist in product matching, according to claim 19, and further comprising the steps of:

accessing an internet portal to permit matching of said altered product value with said products.