Grain boundary detection

Loading image grain.gif ...

Grain boundary detection example

This software solves a common problem in materials science, namely the detection of grain boundaries. For example, ASTM standards refer to this detection.

The user interface appears as a combination of several windows with buttons calling some functions of image processing and mathematical morphology. The judicious combination of these features can automatically detect the grains and their boundaries in calling functions segmentation and analysis of size and shape. The user has very few parameters to be specified before the launch detection and the output image of the algorithm contains boundaries thinned and thick one pixel.

This software is absolutely expectations metallurgists who wish to automate the detection of grain material and quantify the number of phases and inclusions in steel. The software is based on a stand-alone program that takes an image in TIFF format as input and generates an image at the same output format. All measurements are exported to a file in Microsoft Excel format. The demo version is an executable Visual Basic.

The advantages of the detection software grain boundaries are:

  • Standalone software can be used from any Windows PC
  • Solves the problem non-trivial detection prior to any extent ASTM
  • No learning curve - Can be used by non expert technician in image processing

  • Automatic 99%. Very few parameters must be specified by the user
  • Fully compatible with all hardware supported by the acquisition of Aphelion™, as an optical microscope or digital microscope
  • Outputs a binary image and measures exported into a spreadsheet

Algorithm:

The algorithm includes edge detection, two types of transformations Top Hat Form to solve the problem of non-uniform illumination, an edge detection, filtering, operations erosion and dilation to clean contours, a line algorithm Watershed and skeleton by influence zone.