Moment-based focus measure

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Moment-based focus measure

• Odd-order moments ? blur invariants
• Even-order moments ? blur/focus measure

If M(g1) gt M(g2) ? g2 is less blurred
(more
focused)
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Desirable properties of a focus measure

• Agreement with a visual assessment
• Robustness to noise
• Robustness to small image changes
• Robustness to restoration artifacts

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Robustness to noise
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Indoor scene out of focus
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Sunspots atmospheric turbulence
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(No Transcript)
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Multifocal Microscopy
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Diatom Fusion