Registration of TEM images
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Revision as of 13:36, 10 March 2006
The Mimas registration algorithm has been adapted to register 2 TEM images of what I presume to be an indenter.
To sum up:
Preliminary results were not good. The inverse of the FFT is giving a maximum that doesn't correspond to the translation (at least the one we would naturally infer). Then I checked the high values and see that amongst them is the expected translation. My first idea was to threshold these high values and validate the hypothesis using another method (for instance a correlation measure or a difference one). But a muse wispered to my ear (nowadays we would probably talk about creative thinking) hey dude why don't you try to filter the image first as it seems that the lack of texture is a problem for this FFT method. So I tried and the result were improved. Still however the correspondence wasn't working time to time. So I did another attempt combining the original image with its edges and it seems it is working just fine.
The registration uses a windows that cut the original image to avoid taking the scale that disturb the registration method as there is not translation of it.
