About Synopsys S-Metro

Synopsys S-Metro provides a comprehensive and powerful toolbox for automated assessment of numerical and image-based metrology data for photomask qualification, modeling data preparation, and process characterization.  Process engineers use it to measure the lithographic performance, for instance through process window analysis.​

Metrology images from any source, whether photomask or wafer, can be processed and analyzed in Synopsys S-Metro as well. Images are aligned to the corresponding layout and can be averaged to improve contrast; contours are extracted for use in model calibration and validation as well as for training machine learning modes.​

Synopsys S-Metro automatically processes SEM image and CD data in a consistent and transparent manner.  The infrastructure is capable of handling tens of thousands of data points and scales well on compute clusters.

Key Benefits

Robust Contour Extraction

Comprehensive Analysis


Full Automation


Big Data Handling


Quickly Import and Assess Gauge-based Measurement Results to Characterize Lithographic Performance

  • Automate data import from Hitachi (*.msr) and AMAT (*.cst) CD-SEM
  • Sort, group, and filter data for quick navigation 
  • Utilize associated SEM images for data validation and flyer elimination
  • Determine individual and overlapping process windows, including rectangular or elliptical fits
  • Assess data consistency through statistical analysis

Quickly Import and Analyze SEM Images to Qualify Photomask or Generate Data for Building Lithographic Models

  • Automated import of SEM images from any source
  • Fast and accurate alignment of images to layout (GDS, OASIS)
  • Robust and customizable contour extraction
    • Extensive contour analysis capabilities
    • Intra-field averaging
    • CD, 2D area, pitch, EPE assessment
    • Contour to CD matching
  • S-Litho compatible gauge-based analysis for line/space pattern and contact holes
  • Export of extracted contours to GDS or OASIS format for subsequent litho process simulation    
  • Automation and parallelization
    • Scripting via python, tcl; marco recording
    • Highly efficient DP scaling on clusters for high volume data processing

Related Products

Synopsys’ Mask Synthesis soultions have been industry tested for almost two decades and are the tool of choice for leading-edge IDM’s and foundries.

Connect with Us