Help to remove background

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Help to remove background

OBEID Patricia 154904

Hello
I try to improve my images before doing an Auto Threshold for the rest of the quantifications.
I have a significant background noise related to the Fibrin gel in which the cells develop.
In the attached images, the arrows point to areas I would like to "erase" and the cells are circled in green.

[cid:image001.jpg@01D6FBA4.EB60B440]















[cid:image005.jpg@01D6FBA4.EB60B440]
















Any help will be welcome.
Patricia
_______________________________________

Email : [hidden email]<mailto:[hidden email]>








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Re: Help to remove background

Knecht, David
If this is autofluorescence of some sort, it is often broad wavelength, so one simple way to remove it is to take an image with a different fluorescence channel than your true signal and subtract the background image (noise)  from the signal image.  Dave

Dr. David Knecht
Professor, Department of Molecular and Cell Biology
University of Connecticut
91 N. Eagleville Rd.
U-3125
Storrs, CT 06269-3125



On Feb 5, 2021, at 3:54 AM, OBEID Patricia 154904 <[hidden email]<mailto:[hidden email]>> wrote:

*Message sent from a system outside of UConn.*


Hello
I try to improve my images before doing an Auto Threshold for the rest of the quantifications.
I have a significant background noise related to the Fibrin gel in which the cells develop.
In the attached images, the arrows point to areas I would like to "erase" and the cells are circled in green.

[cid:image001.jpg@01D6FBA4.EB60B440]















[cid:image005.jpg@01D6FBA4.EB60B440]
















Any help will be welcome.
Patricia
_______________________________________

Email : [hidden email]<mailto:[hidden email]><mailto:[hidden email]>








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<image002.jpg><image004.jpg><image001.jpg><image005.jpg><original_IJ.jpg>


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Re: [EXTERNAL] Help to remove background

vbindokas
In reply to this post by OBEID Patricia 154904
It looks like the blurs are out of focus cells deep in the gel. A
pinhole confocal might yield the best data (or maybe SPIM).

Cleaning up what you have might be a partial work around. A rolling ball
subtraction (paraboloid 6) or a bandpassFFT (8,0,autoscale) can lessen
the scattered background. The uneven label will pose the next problem
for threshold-- skeletonizing the membrane vs picking up the entire
cell. Using a gamma 0.6 to make the scatter more uniform, ditto the
label, before the rolling ball, seems to pick up most cells with Li
threshold.

Better data = better results.

regards

On 2/5/2021 2:54 AM, OBEID Patricia 154904 wrote:

> Hello
> I try to improve my images before doing an Auto Threshold for the rest of the quantifications.
> I have a significant background noise related to the Fibrin gel in which the cells develop.
> In the attached images, the arrows point to areas I would like to "erase" and the cells are circled in green.
>
> [cid:image001.jpg@01D6FBA4.EB60B440]
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> [cid:image005.jpg@01D6FBA4.EB60B440]
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Any help will be welcome.
> Patricia
> _______________________________________
>
> Email : [hidden email]<mailto:[hidden email]>
>
>
>
>
>
>
>
>
> --
> ImageJ mailing list: https://urldefense.com/v3/__http://imagej.nih.gov/ij/list.html__;!!OaZRxjSJGsACmqMyc8s!YlLHfww6a7aO8kT-pE2XQK787tWdfI-Ec3qbB1Z66RphMGm8oJeLSAsOpcBpHm3mre6D3No$
>
> ----------------------------------------------------------------------
> “This message was received from outside of the organization. Please pay special attention and practice care when clicking on any links, or providing any information to the sender. Cyber attacks commonly attempt to trick you in to thinking the sender is a reputable individual who you can trust.”
>
--
     __

     Vytas Bindokas, M.S., Ph.D.
     Research Assoc. Prof.,
     Director, BSD Light Microscopy Core Facility
     phone: 773-702-4875 [alt's: 773-834-9040 or 773-834-2639]

          [address for letters ONLY (see shipping addr below):]
     Dept Pharmacol Physiol Sci MC0926
     947 E 58th Street
     The University of Chicago
     Chicago IL 60637
     Room Abbott 129


     shipping address (main KCBD site):
     V. Bindokas
     900 E 57th Street
     KCBD room 1250, Microscopy Core
     The University of Chicago
     Chicago IL 60637


     email [hidden email]
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Re: [EXTERNAL] Help to remove background

Krs5
I got some decent results with Labkit (https://imagej.net/Labkit), I guess they would even become better with some pre-filteren etc.

Best wishes

Kees

-----Original Message-----
From: vbindokas
Sent: 05 February 2021 14:05
Subject: Re: [EXTERNAL] Help to remove background

It looks like the blurs are out of focus cells deep in the gel. A pinhole confocal might yield the best data (or maybe SPIM).

Cleaning up what you have might be a partial work around. A rolling ball subtraction (paraboloid 6) or a bandpassFFT (8,0,autoscale) can lessen the scattered background. The uneven label will pose the next problem for threshold-- skeletonizing the membrane vs picking up the entire cell. Using a gamma 0.6 to make the scatter more uniform, ditto the label, before the rolling ball, seems to pick up most cells with Li threshold.

Better data = better results.

regards

On 2/5/2021 2:54 AM, OBEID Patricia 154904 wrote:

> Hello
> I try to improve my images before doing an Auto Threshold for the rest of the quantifications.
> I have a significant background noise related to the Fibrin gel in which the cells develop.
> In the attached images, the arrows point to areas I would like to "erase" and the cells are circled in green.
>
> [cid:image001.jpg@01D6FBA4.EB60B440]
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> [cid:image005.jpg@01D6FBA4.EB60B440]
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Any help will be welcome.
> Patricia
> _______________________________________
>
> Email : [hidden email]<mailto:[hidden email]>
>
>
>
>
>
>
>
>
> --
> ImageJ mailing list:
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Furld
> efense.com%2Fv3%2F__http%3A%2F%2Fimagej.nih.gov%2Fij%2Flist.html__%3B!
> !OaZRxjSJGsACmqMyc8s!YlLHfww6a7aO8kT-pE2XQK787tWdfI-Ec3qbB1Z66RphMGm8o
> JeLSAsOpcBpHm3mre6D3No%24&amp;data=04%7C01%7Ckrs5%40leicester.ac.uk%7C
> 546b6a052df74e159f1c08d8c9df2f64%7Caebecd6a31d44b0195ce8274afe853d9%7C
> 0%7C0%7C637481307725778552%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDA
> iLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=slaO5
> vO9%2BLZPfeTRtSHgndBwCD3BhYUHSDvVoAeP3mI%3D&amp;reserved=0
>
> ----------------------------------------------------------------------
> "This message was received from outside of the organization. Please pay special attention and practice care when clicking on any links, or providing any information to the sender. Cyber attacks commonly attempt to trick you in to thinking the sender is a reputable individual who you can trust."
>
--
     __

     Vytas Bindokas, M.S., Ph.D.
     Research Assoc. Prof.,
     Director, BSD Light Microscopy Core Facility
     phone: 773-702-4875 [alt's: 773-834-9040 or 773-834-2639]

          [address for letters ONLY (see shipping addr below):]
     Dept Pharmacol Physiol Sci MC0926
     947 E 58th Street
     The University of Chicago
     Chicago IL 60637
     Room Abbott 129


     shipping address (main KCBD site):
     V. Bindokas
     900 E 57th Street
     KCBD room 1250, Microscopy Core
     The University of Chicago
     Chicago IL 60637


     email [hidden email]
     web site for LMCF:
     https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdigital.uchicago.edu%2F&amp;data=04%7C01%7Ckrs5%40leicester.ac.uk%7C546b6a052df74e159f1c08d8c9df2f64%7Caebecd6a31d44b0195ce8274afe853d9%7C0%7C0%7C637481307725778552%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=COl3zmz0jTBxq2jcIqshTqZy93W4sSBxj%2Bxg1p1JK1g%3D&amp;reserved=0

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