Add position correction feature to the RPIE implementation.
Approach
Copies the position correction implementation from the lstsq_grad algorithm. This approach approximates the position update direction using finite element on each object patch and then amplifies the update information from these patches across iterations using ADAM (Adaptive Moment).
Pre-Merge Checklists
Submitter
[x] Write a helpfully descriptive pull request title.
[x] Organize changes into logically grouped commits with descriptive commit messages.
[x] Document all new functions.
[x] Click 'details' on the readthedocs check to view the updated docs.
[x] Write tests for new functions or explain why they are not needed.
[x] Address any complaints from pep8speaks.
Reviewer
[x] Actually read all of the code.
[x] Run the new code yourself; the included tests should make this easy.
[x] Write a summary of the changes as you understand them.
Purpose
Add position correction feature to the RPIE implementation.
Approach
Copies the position correction implementation from the lstsq_grad algorithm. This approach approximates the position update direction using finite element on each object patch and then amplifies the update information from these patches across iterations using ADAM (Adaptive Moment).
Pre-Merge Checklists
Submitter
Reviewer