Computing the projection of a 3-D volume

[sequentialran]

I am trying to project a voxelized cube.

I have created a cube of size 255x255x255 with intensity values one. I have derived the perspective transformation matrix and constructed the projection-matrix. I have implemented the projection of a cube using voxel-driven projection algorithm in Matlab.

The code ran without any errors. However, the projected cube is not at the centre. When I change the angle, or the distance; the cube sometimes will completely move off the screen, or on the screen, or partially on the screen. I believe the source and the detector are not aligned.

I am in confusion. I am not able to find out what's happening here. I have attached the MATLAB code. Can somebody please suggest me what's happening here.

Thank you.

 

[mmwave]

Thank you for reaching out with your question. It sounds like you have done a lot of work to create your voxelized cube and implement the projection algorithm in Matlab. It can be frustrating when things don't work as expected, especially after putting in a lot of effort.

Based on your description, it seems like the issue may be related to the alignment of your source and detector. If they are not aligned, it can result in the projected cube appearing in different locations on the screen. I would suggest double checking the code and calculations for the source and detector positions to ensure they are correctly aligned.

Additionally, it may be helpful to plot the projected cube at different angles and distances to see if there is a pattern in its movement. This can help identify any potential errors in the code or calculations.

If you are still having trouble, I would recommend seeking assistance from a colleague or mentor who has experience with similar projects. They may be able to provide insights or offer suggestions for troubleshooting.

I hope this helps and that you are able to successfully project your voxelized cube. Best of luck with your project.