range from focus
DESCRIPTION
Range from Focus. Based on the work of Eric Krotkov And Jean Paul Martin. Problem statement. Problem statement cont. Theory of Defocus. The Optical Transfer Function. Wave Aberation. The Object plane, the image plane and the pupil planes. The Wave aberation QQ. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Range from Focus](https://reader034.vdocuments.net/reader034/viewer/2022051623/56815931550346895dc6659d/html5/thumbnails/1.jpg)
Range from Focus
Based on the work of Eric Krotkov
And Jean Paul Martin
![Page 2: Range from Focus](https://reader034.vdocuments.net/reader034/viewer/2022051623/56815931550346895dc6659d/html5/thumbnails/2.jpg)
Problem statement
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Problem statement cont.
![Page 4: Range from Focus](https://reader034.vdocuments.net/reader034/viewer/2022051623/56815931550346895dc6659d/html5/thumbnails/4.jpg)
Theory of Defocus
![Page 5: Range from Focus](https://reader034.vdocuments.net/reader034/viewer/2022051623/56815931550346895dc6659d/html5/thumbnails/5.jpg)
The Optical Transfer Function
![Page 6: Range from Focus](https://reader034.vdocuments.net/reader034/viewer/2022051623/56815931550346895dc6659d/html5/thumbnails/6.jpg)
Wave Aberation
![Page 7: Range from Focus](https://reader034.vdocuments.net/reader034/viewer/2022051623/56815931550346895dc6659d/html5/thumbnails/7.jpg)
The Object plane, the image plane and the pupil planes
![Page 8: Range from Focus](https://reader034.vdocuments.net/reader034/viewer/2022051623/56815931550346895dc6659d/html5/thumbnails/8.jpg)
The Wave aberation QQ
![Page 9: Range from Focus](https://reader034.vdocuments.net/reader034/viewer/2022051623/56815931550346895dc6659d/html5/thumbnails/9.jpg)
A different choice of reference system for wave aberation
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Notation
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The displacement of the detector plane is = to introduction of wave
aberation by amount
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In terms of the amount of defocus
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Figure 2. Cross-section of the OTF of a defocused incoherent system
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Focus Quality
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Focus criterion functions
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Focus criterion functions cont.
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Implementation
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Search Strategy
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Fibonacci search technique
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The search Algorithm
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Computing the range
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Thin lens geometry
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Computing the range
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Algorithm
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Limitations
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The effect of depth of field
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Focus data
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Range errors