How to run own CT data in the demo 01_intro_walnut_conebeam.ipynb?

[TianSong1991]

The Cil module is really good to use. Now I want to reconstruct my own data. I used 01_intro_walnut_conebeam.ipynb in the demo to reconstruct it. It has been successfully reconstructed. Now I want to reconstruct my own data. I copied my own data to the imported walnut data data.array, and then modified the pixel_num_v and pixel_num_h attributes of data.geometry. My projection number is only 360, and the angle is from 0 to 359 degrees. I assigned it to data.geometry.angles I am not allowed to modify, and I am not allowed to modify data.geometry.num_projections. How can I solve it, or how can I create my own geometry, thank you!

[TianSong1991]

Can you give me a detailed explanation about Angles 0-20, but I don’t quite understand what the meaning of the 20 radians.

[lauramurgatroyd]

This is just printing out the first 20 angles (indexes 0 to 19 in the angles list), and shows them in radians rather than degrees

[TianSong1991]

Ok ,thank you very much! I see.

[MargaretDuff]

Hi @TianSong1991 if you are interested in creating your own geometry, I would recommend having a look through the notebook: TomographicImaging/CIL-Demos/demos/1_Introduction/exercises/03_where_is_my_reader.ipynb. This takes you through setting up your own geometries. For more information, see the documentation e.g. https://tomographicimaging.github.io/CIL/nightly/framework.html#configure-the-geometry.

I would recommend that you join the CIL discord channel https://discord.gg/xXUsCS59. On Friday between 10 and 11 we will be answering user questions and are available for a video call on discord

[lauramurgatroyd]

TomographicImaging/CIL-Demos/demos/1_Introduction/00_CIL_geometry.ipynb also provides an introduction to CIL Geometries

[TianSong1991]

@MargaretDuff @lauramurgatroyd Thank you for your detailed reply, I will take a look at the introduction and use it in detail, this is a very useful CT reconstruction module.

[TianSong1991]

I reconstruct my own data successfully. Thanks for your guiding.

[lauramurgatroyd]

You're welcome, glad it worked!