In these images,how can I remove the backgrnd noise in matlab?

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SUMMARY

The discussion focuses on isolating a cell from a noisy background in MATLAB, specifically when the intensity of the cell is similar to that of the background. The user applied the 'medfilt2' function twice but found that the cell was no longer the brightest spot in the processed image. The main challenge is determining the appropriate filtering technique or criteria for accurately locating the cell amidst the background noise.

PREREQUISITES
  • Familiarity with MATLAB image processing functions
  • Understanding of median filtering techniques, specifically 'medfilt2'
  • Knowledge of image intensity and brightness concepts
  • Basic skills in image segmentation methods
NEXT STEPS
  • Explore advanced filtering techniques such as 'wiener2' for noise reduction
  • Learn about image segmentation methods like 'regionprops' for cell detection
  • Investigate thresholding techniques to differentiate the cell from the background
  • Research morphological operations in MATLAB for enhancing cell features
USEFUL FOR

This discussion is beneficial for researchers, biologists, and data analysts working with image processing in MATLAB, particularly those focused on isolating biological cells from noisy backgrounds.

Urmi Roy
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I have to isolate the cell(seen as a bright blob) in the attached images from the background the zig-zag.

The problem is essentially that the intensity/brightness of the cell is almost equal to its backgraound, so I can't just subtract frames!
 

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After filtering the images with medfilt2 twice, I get the following image...
http://imgur.com/D60kG

However, the cell is no longer the brightest spot here, so do I go for some other filter or does the criterion on the basis of which I locate the cell change?

Please suggest.
 

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