Adaptive Median Filter Using LabVIEW

[nagaramsuresh]

Overview
This VI removes ‘salt & pepper’ noise in gray scale images.

 
Description

Here in this VI, every pixel in window is verified whether it’s noisy or noise-free based on min & max gray levels in the window. Finally, noisy pixel is replaced with the median value. A simple filter was developed with 3*3 window, or better result, one can remodel the program by using 5*5, 7*7 window and so on.

It is the program for adaptive median filter whose algorithm is described in "Digital image Processing by Gonzalez" text book.

Requirements

• LabVIEW 2012 (or compatible)
• Vision Development Module 2012 (or compatible)

Steps to Implement or Execute Code

1. Browse a gray image in the front panel.
2. Run the VI to remove the ‘salt & pepper’ noise in gray scale image.

Additional Information or References
VI Snippet

**This document has been updated to meet the current required format for the NI Code Exchange.**

[rom391]

hello, this program interest me but I have only labview 8.6. So can we save your program for labview 8.6.

Thanks

[navruz_ebru]

Hi, I also try to add noise and denoise but in my simulation noise and image changes constantly. Also I use your simulation I use only original image and noisy image and delete other parts, your simulation look exactly like mine