Image Processing Toolbox

Morphological Reconstruction

Morphological reconstruction is another major part of morphological image processing. Based on dilation, morphological reconstruction has these unique properties:

• Processing is based on two images, a marker and a mask, rather than one image and a structuring element.
• Processing repeats until stability; i.e., the image no longer changes.
• Processing is based on the concept of connectivity, rather than a structuring element.

This section

• Provides background information about morphological reconstruction and describes how to use imreconstruct function
• Describes how pixel connectivity affects morphological reconstruction
• Describes how to use the imfill function, which is based on morphological reconstruction
• Describes a group of functions, all based on morphological reconstruction, that process image extrema, i.e., the areas of high and low intensity in images

Dilation- and Erosion-Based Functions

Marker and Mask