Machine Vision fundas - Part I (ROI Manipulation)

[muks]

There have been lot of fundamental questions asked repeatedly and hence I have planned to explain the some fundamental functions which I also struggled to get while beginning to program image processing.

ROI from Pattern matching

Pattern matching unlike any other programming language is readily and easily available. The struggle comes when we want to extract the matched part or overlay the part.

The pattern matching has an output indicator called matches which is an array of clusters and we have to convert that into a cluster to get the required bounding box. This is explained below

The template matched can be extracted as well by using an Imaq extract as shown above.

ROI from Particle analysis

The same result can be obtained by converting the image to a binary image and using particle analysis as shown below

[whs]

This note is really helpful. Thanks.