[ITK] Finding non-zero pixels

[Girish, Gavaskar Ruturaj]

Hello,

Thanks Brad, that was just what I needed, because pixels equal to the threshold value are not set to OutsideValue.
I have one more question (actually three). What does it mean when the method itk::Image::TransformPhysicalPointToIndex(point,pixelIndex) returns a 0? Do the index coordinates still get stored in pixelIndex? Why are they not useful?

Thanks & Regards,
Ruturaj

From: Bradley Lowekamp [mailto:blowekamp at mail.nih.gov]
Sent: Tuesday, June 03, 2014 5:43 PM
To: Girish, Gavaskar Ruturaj
Cc: community at itk.org
Subject: Re: [ITK] Finding non-zero pixels

Hello,

There quite a large number of ways to do this in ITK. Have you looked at the ThresholdImageFilter[1]?

Brad

[1] http://www.itk.org/Doxygen/html/classitk_1_1ThresholdImageFilter.html

On Jun 3, 2014, at 2:34 AM, Girish, Gavaskar Ruturaj <gavaskar.ruturaj.girish at philips.com<mailto:gavaskar.ruturaj.girish at philips.com>> wrote:


Dear all,

I have a grayscale image. I want a binary mask which is white where the pixels in the original image are non-zero, and black elsewhere. Which filter(s) can I use for this task?

Thanks & Regards,
Ruturaj

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