# Challenges in Foot Bone 2D Landmark Registration: Seeking Guidance on Optimal Methods

**URL:** <https://shapeworks.discourse.group/t/challenges-in-foot-bone-2d-landmark-registration-seeking-guidance-on-optimal-methods/271>\
**Category:** Uncategorized\
**Created:** [September 10, 2024, 4:03pm UTC](https://shapeworks.discourse.group/t/challenges-in-foot-bone-2d-landmark-registration-seeking-guidance-on-optimal-methods/271 "2024-09-10T16:03:02Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![kwlee](https://avatars.discourse-cdn.com/v4/letter/k/4af34b/32.png) [@kwlee](https://shapeworks.discourse.group/u/kwlee)\
**Post date:** [September 10, 2024, 4:03pm UTC](https://shapeworks.discourse.group/t/challenges-in-foot-bone-2d-landmark-registration-seeking-guidance-on-optimal-methods/271/1 "2024-09-10T16:03:02Z")

</div>

![그림1](https://global.discourse-cdn.com/free1/uploads/shapeworks/original/1X/7a1e89093f710723063e85ce27999b0e382937e9.jpeg)  
I am currently attempting to build a model using 2D labeled data of foot bones.  
Due to the large sample size, manually assigning landmarks was not feasible.  
I have worked with multi-domain data and tested various parameters, but I have not succeeded in properly registering the data.  
As part of my efforts, I converted the existing landmarks to VTP format and resampled them to 200 points.  
Are there any recommended methods I could try?

---

<div class="post-metadata">

**Author:** ![amorris](https://avatars.discourse-cdn.com/v4/letter/a/73ab20/32.png) [@amorris](https://shapeworks.discourse.group/u/amorris)\
**Post date:** [September 10, 2024, 4:08pm UTC](https://shapeworks.discourse.group/t/challenges-in-foot-bone-2d-landmark-registration-seeking-guidance-on-optimal-methods/271/2 "2024-09-10T16:08:48Z")

</div>

Is your starting data only points, or do you have a contour?

Are you hoping to use ShapeWorks to analyze and existing point set, or do you need it to automatically place landmarks on shapes?

---

<div class="post-metadata">

**Author:** ![kwlee](https://avatars.discourse-cdn.com/v4/letter/k/4af34b/32.png) [@kwlee](https://shapeworks.discourse.group/u/kwlee)\
**Post date:** [September 11, 2024, 12:30am UTC](https://shapeworks.discourse.group/t/challenges-in-foot-bone-2d-landmark-registration-seeking-guidance-on-optimal-methods/271/3 "2024-09-11T00:30:05Z")

</div>

Thank you for your response. The existing labeling file consists of polylines with unordered points. Depending on the large amount of data, I need to automatically position all landmarks.

---

<div class="post-metadata">

**Author:** ![amorris](https://avatars.discourse-cdn.com/v4/letter/a/73ab20/32.png) [@amorris](https://shapeworks.discourse.group/u/amorris)\
**Post date:** [September 12, 2024, 2:59am UTC](https://shapeworks.discourse.group/t/challenges-in-foot-bone-2d-landmark-registration-seeking-guidance-on-optimal-methods/271/4 "2024-09-12T02:59:27Z")

</div>

You should be able to provide these as contours to ShapeWorks. As an example:

> **[Supershapes:Shape Model for Contour Domains - ShapeWorks](https://sciinstitute.github.io/ShapeWorks/latest/use-cases/contour-based/supershapes-contour.html)**
>
> The official documentation of ShapeWorks

I would suggest starting with one shape per subject. A spreadsheet like:

contour\_one  
shape1.vtp  
shape2.vtp  
shape3.vtp

However if you have multiple contours in each vtp file, you will need to separate them first.