Partitioning a digital image into multiple segments!

1. Do you have overlapping objects? And do you care?

2. What are the shapes of your objects?

Tubes? Blobs? Clouds?

3. What modality was used? And how does the signal look?

1. Preprocess

Prepare your image for thresholding

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2. Threshold

Separate foreground from background

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3. Cleanup

Improve mask with morphological operations

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4. Identify

Split foreground into objects

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5. Analyze

Measure the original data

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Other techniques:

• active contours (mostly interactive)
• graph-based methods
• machine learning