# I need help to count number of pixels

**URL:** <https://discourse.slicer.org/t/i-need-help-to-count-number-of-pixels/35865>\
**Category:** Support\
**Created:** [May 2, 2024, 8:24am UTC](https://discourse.slicer.org/t/i-need-help-to-count-number-of-pixels/35865 "2024-05-02T08:24:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Vikram](https://avatars.discourse-cdn.com/v4/letter/v/e47774/32.png) [@Vikram](https://discourse.slicer.org/u/Vikram)\
**Post date:** [May 2, 2024, 8:24am UTC](https://discourse.slicer.org/t/i-need-help-to-count-number-of-pixels/35865/1 "2024-05-02T08:24:23Z")

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![SLICEER](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/1/e13eb9d1b09f4105ec05abb9abce5721ccf7b583.png)  
i finally i segmented ct cubic dicom file in 3d box there is output segmented image there is extra circle i put in this image i need to segment extra line in image after i want to count number of pixel of air(black) and lattice(color ) , any one help me please.