Model files are now saved in LPS coordinate system

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18

I’ve checked the file and everything looks good. The control point coordinates in the .mrk.json file are defined in LPS coordinate system (first control point: [195.993, 6.125, -90.188]). When Slicer loads the file, it converts the coordinates into RAS coordinate system (first control point: [-195.993, -6.125, -90.188]).

{
...
    "markups": [ {
            "type": "Fiducial",
            "coordinateSystem": "LPS", ...
            "controlPoints": [
                { ... "position": [195.99323699260385, 6.125348335657372, -90.18842609112076], ... },
                { ... "position": [150.0713619926038, 71.15759015694647, -79.89948566143325], ... }, ...]
...
}

image
image1166×1286 86 KB

If you specify the control points in RAS coordinate system then in the file set "coordinateSystem": "RAS".