Hi,
I have RGB pictures from nucleus staining and I would like to measure the ratio of red and green staining in each nucleus. My way of doing it so far was to draw manually a ROI around each nucleus and measure the intensity with /analyse/measure/. My question is : is there a plugin/macro to automatically creat ROI around all nucleus (I have thought to threeshold my picture, apply a granulometric filter and import this new picture as an ROI, but I couldn't found any way to do that) but with independant ROI for each nucleus, to be able to have a measure for each? Thanks, Samuel -- Samuel Collombet [hidden email] 237 B/6 Gilmerton Road, EH16 5TH Edinburgh |
Hi Samuel,
Here is the way I would do it. - Take your image of the nucleus and threshold it (if the SNR is low you can first apply a mean or gaussian filter). - On the thresholded image run Analyze-->Analyze Particles... - Check "Add to Manager" This will add every nucleus as a single ROI to the roi manager. Now you can measure the intensities of the ROIs individual or all at once in the red and the green channel. I hope that helps. Cheers Arne > -----Original Message----- > From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of > samuel collombet > Sent: jeudi 28 juillet 2011 12:53 > To: [hidden email] > Subject: Automatic ROI for particle anamysis > > Hi, > > I have RGB pictures from nucleus staining and I would like to measure > the ratio of red and green staining in each nucleus. My way of doing it > so far was to draw manually a ROI around each nucleus and measure the > intensity with /analyse/measure/. > > My question is : is there a plugin/macro to automatically creat ROI > around all nucleus (I have thought to threeshold my picture, apply a > granulometric filter and import this new picture as an ROI, but I > couldn't found any way to do that) but with independant ROI for each > nucleus, to be able to have a measure for each? > > > Thanks, > Samuel > > -- > Samuel Collombet > [hidden email] > 237 B/6 Gilmerton Road, EH16 5TH Edinburgh |
Hi Arne,
Thank you very much for your help, it works perfectly. Cheers, Samuel On 28/07/11 14:39, Seitz Arne wrote: > Hi Samuel, > > Here is the way I would do it. > > - Take your image of the nucleus and threshold it (if the SNR is low you can first apply a mean or gaussian filter). > - On the thresholded image run Analyze-->Analyze Particles... > - Check "Add to Manager" > > This will add every nucleus as a single ROI to the roi manager. Now you can measure the intensities of the ROIs individual or all at once in the red and the green channel. > > I hope that helps. > > Cheers Arne > >> -----Original Message----- >> From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of >> samuel collombet >> Sent: jeudi 28 juillet 2011 12:53 >> To: [hidden email] >> Subject: Automatic ROI for particle anamysis >> >> Hi, >> >> I have RGB pictures from nucleus staining and I would like to measure >> the ratio of red and green staining in each nucleus. My way of doing it >> so far was to draw manually a ROI around each nucleus and measure the >> intensity with /analyse/measure/. >> >> My question is : is there a plugin/macro to automatically creat ROI >> around all nucleus (I have thought to threeshold my picture, apply a >> granulometric filter and import this new picture as an ROI, but I >> couldn't found any way to do that) but with independant ROI for each >> nucleus, to be able to have a measure for each? >> >> >> Thanks, >> Samuel >> >> -- >> Samuel Collombet >> [hidden email] >> 237 B/6 Gilmerton Road, EH16 5TH Edinburgh |
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