How to synchronize all this images?

[Mathcad111]

please check attached mathcad file, if you see each column are slightly shifting (some constant amount of shift) but to sync. all those columns ?

[ValeryOchkov]

We need the image.txt file!

[Mathcad111]

sorry for that!

[ValeryOchkov]

Try work with matrix

[-MFra-]

Hi,

The term "synchronize" only creates confusion and is not really appropriate since it is used for temporal events such as synchronizing clocks. Here, it is a question of intervening on an image and modifying it. You could use the  Mathcad's "warp" operator to deform the image, otherwise I wouldn't know what to do.

[Werner_E · Accepted solution]

Would the attached file help?

[Mathcad111]

Yes definitely, thanks a lot Werner_E

[Werner_E]

Please keep in mind that the method I use is very bold and has no technical meaning.

I define as "center" of each data column the position between the highest and lowest value.

Then I align all those 16 "centers" at a position you can chose (the second argument of the function I provided) and then deal with the upper and the lower part of the data in completely different ways - stretching and compressing the data as needed. Its not a uniform transformation for the whole data column.

Best seen in the plot below which shows the transformation for the second data column (index 1). Notice the bend at the "center" position in the blue curve. The left part is stretched and the right part compressed which means that there is a significant frequency change at the new "center" position which might be undesirable.

Not sure what this means for your application but I guess there sure should be a better method to achieve the desired result.

[Mathcad111]

yes i know, but its simple method for linearizing any images but as per application, yes there some small correction need to be done.

[-MFra-]

Hi,

The phase in an image has great importance, so I would use the module instead of the real part. From the original image, I would extract the phase of each pixel which, then , I would multiply exp(i*phase(j,k)) by each Data.sync element in order to obtain the modified image with the same content of the phase of the original image. The result in this case, however, changes very little

[Mathcad111]

can you upload its mathcad file ?

[-MFra-]

Hi,