Combined image generation of article under examination and image of test item
View Patent ↗Among other things, one or more techniques and/or systems for generating a three-dimensional combined image is provided. A three-dimensional test image of a test item is combined with a three-dimensional article image of an article that is undergoing a radiation examination to generate the three-dimensional combined image. A first selection region of the three-dimensional article image is selected. The three-dimensional test image of the test item is inserted within the first selection region. Although the test item is not actually comprised within the article under examination, the three-dimensional combined image is intended to cause the test item to appear to be comprised within the article.
1. A method of combining an image of a threat and an image of an article, the method comprising:
acquiring a first image representative of an article examined via a radiation imaging system;
acquiring a second image representative of a threat;
identifying one or more regions of the first image, wherein the one or more regions comprise one or more of: one or more object regions corresponding to one or more objects, and one or more void regions corresponding to one or more voids;
obtaining a first selection region of the first image at which to insert a threat;
overlaying the second image with a portion of the first image that is within the first selection region, the overlaying comprising:
obtaining a superimposed image by superimposing the second image over at least the portion of the first image that is within the first selection region;
converting the superimposed image to the projection domain;
and filtering the superimposed image in the projection domain, and
obtaining a third image that is representative of the article including the threat.
2. The method of claim 1 , further comprising:
determining that the second image does not fit within the selection region; and
adjusting the second image to fit within the selection region.
3. The method of claim 2 , wherein determining that the second image does not fit within the selection region comprises:
determining a degree of overlap of the second image and an outer boundary of the selection region; and
determining that the second image does not fit within the selection region responsive to the degree of overlap being above a threshold.
4. The method of claim 2 , wherein determining that the second image does not fit within the selection region comprises:
determining a degree of overlap of the second image and an inner boundary of the selection region; and
determining that the second image does not fit within the selection region responsive to the degree of overlap being below a threshold.
5. The method of claim 2 , wherein adjusting the second image to fit within the selection region comprises:
scaling down the second image or scaling up the second image.
6. The method of claim 2 , wherein the adjusting the second image to fit within the selection region comprises:
cropping the second image such that at least a portion of the second image would not be visible when the merged image is displayed.
7. The method of claim 1 , further comprising receiving a user selection of the first selection region.
8. The method of claim 1 , further comprising automatically selecting the first selection region.
9. The method of claim 1 , further comprising processing the merged image to obtain a two-dimensional image representation of the article including the threat.
10. The method of claim 9 , wherein processing the merged image comprises processing using a technique chosen from a group including: backprojection reconstruction, tomosynthesis reconstruction, and iterative reconstruction.
11. The method of claim 9 , further comprising: displaying the two-dimensional image representation of the article including the threat.
12. The method of claim 9 , further comprising: storing the two-dimensional image representation of the article including the threat.
13. A system, comprising:
a processor; and
a memory storing instructions that, when executed by the processor, enable the processor to:
identify one or more regions of a first image representative of an article examined via radiation,
wherein the one or more regions comprise one or more of: one or more object regions corresponding to one or more objects, and one or more void regions corresponding to one or more voids;
obtain a first selection region of the first image at which to insert a threat;
overlay a second image representative of the threat with a portion of the first image that is within the first selection region, wherein the overlaying comprising:
obtaining a superimposed image by superimposing the second image over at least the portion of the first image that is within the first selection region;
converting the superimposed image to the projection domain; and
filtering the superimposed image in the projection domain, and
obtain a third image that is representative of the article including the threat.
14. A non-transitory computer-readable storage medium, the computer-readable storage medium including instructions that when executed by a computer, cause the computer to:
acquire a first image representative of an article examined via radiation;
acquire a second image representative of a threat;
identify one or more regions of the first image, wherein the one or more regions comprise one or more of: one or more object regions corresponding to one or more objects, and one or more void regions corresponding to one or more voids;
obtain a first selection region of the first image at which to insert a threat;
merge the second image with a portion of the first image that is within the first selection region, the merging comprising:
obtaining a superimposed image by superimposing the second image over at least the portion of the first image that is within the first selection region;
converting the superimposed image to the projection domain; and
filtering the superimposed image in the protection domain, and
obtain a third image that is representative of the article including the threat.