# To detect the small region in the thresholded image

**URL:** <https://forum.opencv.org/t/to-detect-the-small-region-in-the-thresholded-image/17309>\
**Category:** Python\
**Created:** [April 16, 2024, 5:43am UTC](https://forum.opencv.org/t/to-detect-the-small-region-in-the-thresholded-image/17309 "2024-04-16T05:43:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Lalin](https://avatars.discourse-cdn.com/v4/letter/l/0ea827/32.png) [@Lalin](https://forum.opencv.org/u/Lalin)\
**Post date:** [April 16, 2024, 5:43am UTC](https://forum.opencv.org/t/to-detect-the-small-region-in-the-thresholded-image/17309/1 "2024-04-16T05:43:03Z")

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![threshold_image](https://us1.discourse-cdn.com/flex020/uploads/opencv/original/2X/0/026dadc517df945ba508024c4be483670a466881.jpeg)  
i have uploaded the image  
In that thresholded image i need to detect only the white zone which i have circled in green.  
How can i detect those white zones or draw bounding boxes on them.  
Thanks in advance