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Automated Inspection with Computer Vision

Exercise: Calibrate a System and Compute Topography

Explore the process of calibrating a laser line topography acquisition system and computing the 3D shape of objects. Learn to blur images, locate maximum intensity points, solve calibration equations, and reconstruct object heights to inspect surface topography effectively. This hands-on exercise builds foundational skills for industrial inspection using 3D vision.

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Problem statement

In this coding exercise, you’ll calibrate a laser line topography acquisition system. You’ll then use the computed calibration to reconstruct a slice of an object to inspect.

Launch the Jupyter Notebook app below and follow the instructions.

Instructions:

  • The comment lines starting with # >>> indicate that you must edit the cell.

  • Replace the None values with the correct function calls.

The main steps that you’ll have to complete are:

  1. Blur the calibration slice images.

  2. Locate the yy location where the intensity is maximum for each xx in the calibration slice images.

  3. For each xx, solve an overdetermined system of linear equations to extract the (a, b) ...