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Find an Object in a JPEG image and return its first Pixel

by:
‎11-11-2009 02:57 PM
Last Edited by: Member Example_Scrubber_Stephan ‎08-07-2017 12:44 PM

Products and Environment

This section reflects the products and operating system used to create the example.

To download NI software, including the products shown below, visit ni.com/downloads.

    Software

  • LabVIEW

Code and Documents

Attachment

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Overview

This example demonstrates how to search for the upper right pixel of a pattern in a pixmap.

 

Description

A simple image can be searched using LabVIEW in order to find objects. A image is composed of a table of pixels for representing lines and colors.  This example VI can be used to open a black and white JPEG image to find the first pixel where the object appears.  The VI returns the pixel number in reference to the top-left corner acting as the origin. 

 

Requirements

 Software

  • LabVIEW Base Development System 2012 (or compatible)

 Hardware

  • No hardware is necessary to use this example VI

 

Steps to Implement or Execute Code

  1. Download and open the attached file
  2. Run the program

 

Additional Information or References

Locate Rectangle LV2012 NIVerified.vi - Front Panel.png

 

Locate Rectangle LV2012 NIVerified.vi - Block Diagram.png

 

**The code for this example has been edited to meet the new Community Example Style Guidelines. The edited copy is marked with the text ‘NIVerified’. Read here for more information about the new Example Guidelines and Community Platform.**

George T.
Senior Applications Engineer
National Instruments UK and Ireland

Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.

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