Re: Adjacent pixels above threshold

Posted by David Webster on Jul 16, 2011; 7:10pm
URL: http://imagej.273.s1.nabble.com/Adjacent-pixels-above-threshold-tp3683868p3683870.html

You could apply a 3x3 mean filter to the thresholded image and then
re-threshold (or slice) at desrired number of pixls. Note, you will need to
adjust the actual threshold value used to account for the above threshold
pixel value used in the first image and possibly a multiplier by 9 to
account for averaging

On Sat, Jul 16, 2011 at 10:31 AM, jamier <[hidden email]>wrote:

> Hi All,
>
> Probably a simple question but here goes. I want to find pixels in my image
> above a threshold of 2. I can do this no problem. However, my image is
> quite
> noisy and my threshold image has a lot of noisy pixels surviving. Is there
> a
> straightforward method to find unilateral and bilateral occurrences of 2 or
> 3 adjacent pixels all above my threshold value?
>
>
> Thanks,
> Jamie
>
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