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Understanding Regions and Region Segmentation By Nayan Khinvasara Overview ã ã ã ã ã ã ã ã Introduction to Regions Region Segmentation – Approaches Thresholding - Automatic Region Representation Data Structures Split and Merge Color Image Segmentation Morphological Watersheds 2 What is a Region? ã Basic definition :- A group of connected pixels with similar properties. ã Important in interpreting an image because they may correspond to objects in a scene. ã For correct interpretation, image
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  Understanding Regions andRegion Segmentation ByNayan Khinvasara  2 Overview ãIntroduction to RegionsãRegion Segmentation – ApproachesãThresholding - AutomaticãRegion RepresentationãData StructuresãSplit and MergeãColor Image SegmentationãMorphological Watersheds  3 What is a Region? ãBasic definition :- A group of connected pixelswith similar properties.ãImportant in interpreting an image because theymay correspond to objects in a scene.ãFor correct interpretation, image must bepartitioned into regions that correspond toobjects or parts of an object.  4 Partitioning – How? ãPartitioning into regions done often by using grayvalues of the image pixels.ãTwo general approaches :- Region-based segmentationBoundary estimation using edge detection
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