Combining surface registration and model-to-model distance functionalities

Development
1

I have an established workflow and I’d like to streamline & combine the functionalities of - ALPACA, model-to-model distance, and shape-population-viewer (in order).

For example, if possible, I’d like to take the product of ALPACA (aligned models) and automatically feed them into model-to-model distance for distance computation, in 1 click.

I noticed that Model-to-model distance module does not have .py file so I cannot edit/make changes. How can I best approach this? Any advice would be appreciated.

Model-to-model documentation: Documentation/Nightly/Extensions/ModelToModelDistance - Slicer Wiki

2

Andras, thanks for this piece of code - I was able to successfully integrate it into my code without having to use model-to-model & shape population viewer.

There are just a few changes I’d like to make - it looks like with this piece of code it can only show a positive difference (for ex. the area where it’s the target model has been trimmed too much with respect to the source model, but not vice versa). How can I make it show a negative difference?

Also how can I alter the colour range? For example -0.5 to 0.5 similar to how it’s done in shape population viewer

thanks a lot

3

The distance filter computes signed distance by default, so probably you just need to tune the color mapping.

4

Thanks for the tip Andras. Would you know what piece of code I need to change the “Displayed Range” section? I’ve tried setScalarRange however it does not seem to change anything.

Screen Shot 2021-06-27 at 8.15.17 AM
Screen Shot 2021-06-27 at 8.15.17 AM1300×416 36.4 KB

Any advice would be great

5

I would like to change it to “Manual” and range (-0.2, 0.2) through code.

6

There are several color presets that display different colors for positive/negative values. You can also create custom ones as shown in these examples.

7

Thank you, I’ve created a custom one by editing the .txt. file.
Would you know how I can programatically alter the “Scalar Range Mode” and the “Displayed Range” as shown in the screenshot above?

8

Issue resolved: this code worked.

display.SetScalarRangeFlag(0) // returns 'manual'
display.SetScalarRange(-0.1, 0.1) // 'changes the range manually'
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