creating the lens data file ma | Forum

creating the lens data file manually

Hello Aximmetry

As the new lens cali has no focus variation feature for now, I think if there's a tool to put the lens data by manual.

We from time to time got ask for creating wide lens data file who has tracking devices without lens distortion transmission feature and I got a stypekit which can create lens file and it can export as .txt file.

I think there's enough information for lens data and it would be great if it is applicable to Aximmetry.

This file has center shift and also cali -table with 7-steps of zoom and 2-steps of focus.

Wonder how you guys think.

Regards

Bruce

brucekim

Eifert@Aximmetry

Hi Brucekim,

It is likely that Stypekit sends the lens data with the tracking data. In that case, you just need to make sure that you didn't turn off External Lens Data:

So when External Lens Data is turned On, Aximmetry will use the sent the lens data.

Otherwise, you can provide manual lens data like this: https://my.aximmetry.com/post/612-lens-calibration-with-calibrate-x-in-axim
You can look into the Lens_Distort_Vanishing.xcomp compound to see how lens data is being used or parsed.

Warmest regards,

brucekim

Thanks a lot for your kind response.

And for my next step, is it possible to get the json sample file?

I believe that would be much helful.

Regards

Eifert@Aximmetry

Hi Brucekim,

Here is an example JSON lens data:

{
"frameHeight": 1920,
"frameWidth": 1080,
"fx": 561.997914,
"fy": 561.585651,
"cx": 664.16411,
"cy": 361.97667,
"k1": 0.142792,
"k2": 0.022846
}

Just save that in a text file and change the extension of the file from txt to json. And then it can work with the Lens_Distort_Vanishing.xcomp compound.

Warmest regards,

brucekim

Many Thanks!

creating the lens data file manually

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