Difference between revisions of "CT x-ray scanner"
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| [[image:section_4_3.png]] || [[image:section_4_2.png]] || [[image:section_4_1.png]] | | [[image:section_4_3.png]] || [[image:section_4_2.png]] || [[image:section_4_1.png]] | ||
| − | |} | + | | |
| + | Add (overlay) the four | ||
| + | 1D radial sections | ||
| + | together to get the | ||
| + | image on the right | ||
| + | || [[image:target_4_out.png]] | ||
| + | } | ||
Revision as of 09:04, 13 December 2007
CAT Scanning
Here are some sample images that illustrate the process. The algorithm is quite simple.
In a real CAT Scan system the 1 dimensional slices would be taken from the horizontal row of a series of x-rays. In this demo I don't yet have the x-rays to work with so I synthesize the 1D bands from the target image that I want to regenerate. So given a target image I generate a series of 1D radial slices by rotating the target image and then averaging all values in the rows of the image. Then I rotate the slice back to the original angle.
Slices are synthesized from a 180 degree rotation of the target image.
The target and four 1-dimensional sections. The position of the sections corresponds to the angle of projection. |
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Add (overlay) the four 1D radial sections together to get the image on the right |
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