Point spread function
The point spread function (PSF) describes the response of a focused optical imaging system to a point source or point object. A more general term for the PSF is the system's impulse response; the PSF is the impulse response or impulse response function (IRF) of a focused optical imaging system. The PSF in many contexts can be thought of as the extended blob in an image that represents a single point object, that is considered as a spatial impulse. In functional terms, it is the spatial domain version (i.e., the inverse Fourier transform) of the optical transfer function (OTF) of an imaging system. It is a useful concept in Fourier optics, astronomical imaging, medical imaging, electron microscopy and other imaging techniques such as 3D microscopy (like in confocal laser scanning microscopy
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- enThe point spread function (PSF) describes the response of a focused optical imaging system to a point source or point object. A more general term for the PSF is the system's impulse response; the PSF is the impulse response or impulse response function (IRF) of a focused optical imaging system. The PSF in many contexts can be thought of as the extended blob in an image that represents a single point object, that is considered as a spatial impulse. In functional terms, it is the spatial domain version (i.e., the inverse Fourier transform) of the optical transfer function (OTF) of an imaging system. It is a useful concept in Fourier optics, astronomical imaging, medical imaging, electron microscopy and other imaging techniques such as 3D microscopy (like in confocal laser scanning microscopy
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- enThe point spread function (PSF) describes the response of a focused optical imaging system to a point source or point object. A more general term for the PSF is the system's impulse response; the PSF is the impulse response or impulse response function (IRF) of a focused optical imaging system. The PSF in many contexts can be thought of as the extended blob in an image that represents a single point object, that is considered as a spatial impulse. In functional terms, it is the spatial domain version (i.e., the inverse Fourier transform) of the optical transfer function (OTF) of an imaging system. It is a useful concept in Fourier optics, astronomical imaging, medical imaging, electron microscopy and other imaging techniques such as 3D microscopy (like in confocal laser scanning microscopy) and fluorescence microscopy. The degree of spreading (blurring) in the image of a point object for an imaging system is a measure of the quality of the imaging system. In non-coherent imaging systems, such as fluorescent microscopes, telescopes or optical microscopes, the image formation process is linear in the image intensity and described by a linear system theory. This means that when two objects A and B are imaged simultaneously by a non-coherent imaging system, the resulting image is equal to the sum of the independently imaged objects. In other words: the imaging of A is unaffected by the imaging of B and vice versa, owing to the non-interacting property of photons. In space-invariant systems, i.e. those in which the PSF is the same everywhere in the imaging space, the image of a complex object is then the convolution of the that object and the PSF. The PSF can be derived from diffraction integrals.
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- Point spread function
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- enPoint spread function
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- Abbe sine condition
- Adaptive optics
- Airy disc
- Airy disk
- Apodization
- Astronomical seeing
- Astronomy
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- Category:Ophthalmology
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- Charge-coupled device
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- File:63x 1.4NA Confocal Point Spread Function 2+3D.png
- File:Airy-3d.svg
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- File:Convolution Illustrated eng.png
- File:Hubble PSF with flawed optics.jpg
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- File:PSF Deconvolution V.png
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- Fluorescence microscopy
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- Fourier domain
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- Fourier transform
- Fraunhofer diffraction
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- George Biddell Airy
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- Fonction d'étalement du point
- Función de dispersión de punto
- Funzione di diffusione del punto
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- Point spread function
- Punktspreiingsfunksjon
- Punktspreizfunktion
- Q510427
- Rozptylová funkce
- Функция рассеяния точки
- Функцијa ширења тачке
- Функція розсіювання точки
- تابع نقطه گستر
- دالة التوزيع النقطي
- 点扩散函数
- 点拡がり関数
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- Category:Ophthalmology
- Category:Optics
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