how to extract roi automatically
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sathish kumar rb on 24 Sep 2017
Commented: Image Analyst on 8 Oct 2017
how to extract blobs (affected region) in lungs CT scan image without free hand selection using auto selection based on color r something . in that extracted output it needs to display only the blobs in white. background needs to be black
Selva Karna on 24 Sep 2017
Image Analyst on 24 Sep 2017
Look for papers describing how to do that here: http://www.visionbib.com/bibliography/contentsmedical.html#Medical%20Applications,%20CAT,%20MRI,%20Ultrasound,%20Heart%20Models,%20Brain%20Models or in PubMed.
Image Analyst on 8 Oct 2017
What are PBRs?
Go here for better algorithms: Medical Image Processing Algorithms
Try imfreehand(), like in the attached demo, to have your expert draw the ROI.
Find more on ROI-Based Processing in Help Center and File Exchange
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