Relationship between rendered canvas and world coordinates

Support
1

I am rendering a image of the current active viewport by using code similar to:

const enabledElement = cornerstone.getEnabledElementByViewportId('default');

const canvas = enabledElement.viewport.canvas;
const dataURL = canvas.toDataURL('base64');

I want to process this image and get some points back from that processing. These points will, naturally, be in the space of the rendered image.

I have tried to transform these points back into world coordinates by using:

const extractedPoint = [...]

const worldPoint = enabledElement.viewport.canvasToWorld(extractedPoint);

This results in a world coordinate that makes no sense.

How should I go about this?

2

You can take a look at the example that programmatically hydrates https://www.cornerstonejs.org/live-examples/dynamicallyaddannotations