Method and apparatus pertaining to identifying objects of interest in a high-energy image
View Patent ↗A control circuit having access to at least one high-energy image of a scene assesses that image to identify candidate obfuscaters as well as candidate obfuscated objects. This control circuit then processes information regarding the candidate objects to identify objects of interest. By one approach these objects of interest are deemed “of interest” as a function of their being obfuscated in a particular context. By one approach these teachings will accommodate identifying objects as being of interest as a function, at least in part, of the material composition of both the object as well as the visual obfuscater. These teachings also will accommodate peeling away background content/attenuation information in order to separate (and facilitate displaying) a given object in relative isolation from that background content.
1. A method comprising:
by a control circuit having access to at least one high-energy image of a scene, wherein the at least one high-energy image is formed by a superimposing image-forming method:
assessing the at least one high-energy image of the scene to identify candidate obfuscators, the assessing including, at least in part, determining a composition of a material that comprises at least one of the candidate obfuscators;
assessing the at least one high-energy image of the scene to identify candidate obfuscated objects, this assessing including, at least in part, determining a composition of a material that comprises at least one of the candidate obfuscated objects;
processing information regarding the candidate obfuscated objects to identify objects of interest wherein objects are identified as being of interest as a function, at least in part, of the material composition of both the object and the obfuscator that at least partially obfuscates that object; and
wherein the candidate obfuscators and the candidate obfuscated objects are superimposed in the at least one high-energy image.
2. The method of claim 1 wherein the at least one high-energy image of a scene comprises at least one x-ray image of the scene.
3. The method of claim 2 wherein the at least one x-ray image of the scene comprises at least one x-ray image of a mobile shipping container.
4. The method of claim 1 wherein:
assessing the at least one high-energy image of the scene to identify candidate obfuscators comprises using a first assessment algorithm in conjunction with a first set of assessment parameters;
assessing the at least one high-energy image of the scene to identify candidate obfuscated objects comprises using a second assessment algorithm in conjunction with a second set of assessment parameters wherein the second assessment algorithm is different from the first assessment algorithm; and
processing information regarding the candidate objects to identify objects of interest comprises using a third assessment algorithm in conjunction with a third set of assessment parameters wherein the third assessment algorithm is different from both the first assessment algorithm and the second assessment algorithm.
5. The method of claim 4 wherein at least one of the assessment parameters is selectively modifiable by an end user via a user interface that operably couples to the control circuit.
6. The method of claim 4 wherein the assessment parameters used in conjunction with assessing the at least one high-energy image of the scene to identify candidate obfuscators include at least one assessment parameter regarding at least one of:
a particular attenuation constraint;
a particular size constraint;
a particular shape constraint;
a particular edge constraint;
a particular location constraint; and
a particular material constraint.
7. The method of claim 4 wherein the assessment parameters used in conjunction with assessing the at least one high-energy image of the scene to identify candidate obfuscated objects include at least one assessment parameter regarding at least one of:
a minimum amount of additional attenuation as compared to a corresponding candidate visual obfuscator;
a particular size constraint;
a particular shape constraint;
a particular edge constraint;
a particular location constraint; and
a particular material constraint.
8. The method of claim 4 wherein the assessment parameters used in conjunction with processing information regarding the candidate objects to identify objects of interest include at least one assessment parameter regarding:
a particular size constraint on a size of a candidate obfuscator;
a particular size constraint on a size of a candidate obfuscated object;
a particular constraint on a relative size of a candidate obfuscated object versus an obfuscator;
a particular shape constraint;
a particular edge constraint;
a particular location constraint;
a particular material constraint; or
a particular constraint regarding a comparison of a boundary of a candidate object to a boundary of a corresponding candidate obfuscator.
9. The method of claim 1 further comprising:
using information from at least one of:
the candidate obfuscators;
the candidate obfuscated objects; and
the objects of interest;
to display at least one object of interest in conjunction with a visual cue regarding at least one criterion of interest.
10. The method of claim 9 wherein displaying the object of interest in conjunction with a visual cue regarding the at least one criterion of interest includes using dynamically-entered user selections regarding at least one of:
a particular rendering algorithm from amongst a plurality of candidate rendering algorithms; and
at least one rendering-algorithm parameter.
11. The method of claim 1 further comprising:
receiving user input specifying a portion of the high-energy image of the scene;
and wherein at least one of identifying the candidate visual obfuscators and identifying the candidate objects is conducted as a function, at least in part, of the user input.
12. The method of claim 1 further comprising:
providing an alarm to indicate when at least one predetermined property of the object of interest satisfies at least one predetermined criteria.
13. The method of claim 12 further comprising:
providing an alarm as a function of material composition of at least one of a visual obfuscator and an object.
14. The method of claim 1 further comprising:
subtracting background-only material and attenuation from background-plus-object material and attenuation to provide object-of-interest-only material and attenuation.
15. The method of claim 14 further comprising at least one of:
displaying the object-of-interest-only material and attenuation in an absence of the background-only material and attenuation; and
displaying the object-of-interest-only material in an absence of the background-only material.
16. An apparatus comprising:
a control circuit having access to at least one high-energy image of a scene, the at least one high-energy image being formed by a superimposing image-forming method, wherein the control circuit is configured to:
assess the at least one high-energy image of the scene to identify candidate obfuscators by, at least in part, determining a composition of a material that comprises at least one of the candidate obfuscators;
assess the at least one high-energy image of the scene to identify candidate objects that may be obfuscated by the candidate obfuscators, this assessing including, at least in part, determining a composition of a material that comprises at least one of the candidate objects; and
process information regarding the candidate objects to identify objects of interest wherein objects are identified as being of interest as a function, at least in part, of the material composition of both the object and the obfuscator that at least partially obfuscates that object;
wherein the candidate obfuscators and the candidate obfuscated objects are superimposed in the at least one high-energy image.
17. The apparatus of claim 16 wherein the control circuit is configured to:
assess the at least one high-energy image of the scene to identify candidate obfuscators-by using a first rendering algorithm in conjunction with a first set of assessment parameters;
assess the at least one high-energy image of the scene to identify candidate obfuscated objects by using a second rendering algorithm in conjunction with a second set of assessment parameters wherein the second rendering algorithm is different from the first rendering algorithm; and
process information regarding the candidate objects to identify objects of interest by using a third rendering algorithm in conjunction with a third set of assessment parameters wherein the third rendering algorithm is different from both the first rendering algorithm and the second rendering algorithm.
18. The apparatus of claim 17 wherein at least one of the assessment parameters is selectively modifiable by an end user via a user interface that operably couples to the control circuit.
19. The apparatus of claim 16 wherein the control circuit is further configured to display at least one of the objects of interest in conjunction with a visual cue regarding at least one criterion of interest.
20. The apparatus of claim 16 wherein the control circuit is further configured to:
subtract background-only material and attenuation from background-plus-object material and attenuation to provide object-of-interest-only material and attenuation.
21. The apparatus of claim 20 wherein the control circuit is further configured to do at least one of:
display the object-of-interest-only material and attenuation in an absence of the background-only material and attenuation; and
display the object-of-interest-only material in an absence of the background-only material.