Patent ID: 11947270
Assignee: FEI COMPANY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 19:
20. A system comprising:
an electron microscope to acquire an image of a sample, the sample including a plurality of regions of interest;
a core, coupled to or included in the electron microscope, including code or coupled to code that, when executed by the core, causes the core to:
initiate a fast marching level set seed within the image;
propagate a fast marching level set curve from the fast marching level set seed to locate boundaries of each of the plurality of regions of interest within the image; and
perform metrology on the regions of interest based in part on the boundaries,

wherein the code that, when executed by the core, causes the core to propagate the fast marching level set curve from the fast marching level set seed to locate boundaries of the plurality of regions of interest within the image further includes code that, when executed by the core, causes the core to:
construct a speed function image of the image based on a speed function algorithm; and
propagate the fast marching level set seed to determine the boundaries of the plurality of regions of interest within the speed function image.