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MODULATION TRANSFER FUNCTION BY NICK PEMBROKE AND BORIS SHIRMAN.

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Presentation on theme: "MODULATION TRANSFER FUNCTION BY NICK PEMBROKE AND BORIS SHIRMAN."— Presentation transcript:

1 MODULATION TRANSFER FUNCTION BY NICK PEMBROKE AND BORIS SHIRMAN

2 WHAT IS A MODULATION TRANSFER FUNCTION? “It is a measure of the transfer of modulation from the subject to the image.” Widely used measurement in imaging field Does a great job at quantifying image performance Quote from: http://photo.net/learn/optics/mtf/

3 WHAT IS CONTRAST? Difference between colors Depends on 3 things: Sensor quality Illumination Lens quality

4 WHAT IS RESOLUTION? “Imaging system’s ability to distinguish object detail” Measured in ‘line pairs’ per millimeter Image clarity vs. blurring Quote from: http://www.edmundoptics.com/technical-resources-center/http://www.edmundoptics.com/technical-resources-center/ optics/modulation-transfer-function/

5 MODULATION TRANSFER FUNCTION REVISITED Measurement of the ability to convey CONTRAST while also maintaining a certain RESOLUTION

6 HOW CAN IT BE MEASURED? Ideal for contrast measurements Best for systems with a rectangular aperture Best for systems with a circular aperture Helps test focusing ability Ideal test for resolution

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9 WORKS CITED http://www.edmundoptics.com/technical-resources-center/optics/modulation- transfer-function/ http://www.edmundoptics.com/technical-resources-center/optics/modulation- transfer-function/ http://photo.net/learn/optics/mtf/

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