Blob Detection

Example of blob detection connectivity when finding blue colored blobs.
In this lab, students will learn and apply the blob detection (or particle analysis) technique for image processing. They will analyze static and dynamic images to hypothesize the outcome of blob analysis, and then use LabVIEW to perform the analysis and compare the results. They will also experiment to learn how threshold ranges can be used to improve a blob analysis so that particles can be accurately found in an image. Required: Must complete previous labs before starting this lab.
by Quanser Inc.
This is module 8 of 12 in the course, Labs for the Mechatronic Systems QNET.


  • PDF Lab 
  • LabVIEW code


  • PDF Lab Key
  • Completed LabVIEW code


  • Basic LabVIEW familiarity recommended
  • Matrix level mathematics

Related Resources


These labs prepare students with prerequisite skills.


These labs enable students to apply the skills they learn.


The NI Educational Laboratory Virtual Instrumentation Suite (NI ELVIS) is a versatile laboratory platform that enables educators to teach over 20 different courses across science and engineering departments. The NI ELVIS integrates 12 common lab instruments including an oscilloscope, function...


An integrated development environment designed specifically for engineers and scientists.

Quanser QNET Mechatronic Systems Board

The Quanser QNET Mechatronic Systems Add-On Board is NI's most comprehensive solution to teaching mechatronics. This board includes a four-bar linkage system, DC motors, encoders, and a camera for system-level lab challenges on tasks such as vision, image processing, and low-level signal aspects...

NI ELVIS RIO Control Module

The NI ELVIS RIO Control Module connects to the NI Educational Laboratory Virtual Instrumentation Suite (NI ELVIS) to give students access to the accurate timing and control of FPGA-based, reconfigurable I/O. Students can build mechatronic and power electronic systems while troubleshooting and...

Required Software

 Learn About Software Licensing
  • ELVIS RIO Control Software Bundle (2016 or later) Download Here
    • LabVIEW (Requires license)
    • LabVIEW Real-Time Module (Requires license)
    • LabVIEW FPGA Module (Requires license)
    • LabVIEW Control Design and Simulation Module (Requires license)
    • LabVIEW Vision Acquisition Software (Requires license)
    • LabVIEW Vision Development Module (Requires license)
    • LabVIEW ELVIS RIO Control Module Toolkit
  • NI ELVISmx Driver 16.0 or higher Download here

Required Hardware

Purchase Engineering Education Products
  • NI ELVIS II or II+
  • NI ELVIS RIO Control Module
  • Quanser QNET Mechatronic Systems Add-On Board


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