apodization


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apodization

(ap″ŏ-dĭ-zā′shŏn)
1. Alteration of a surface by removal of its irregularities.
2. Introduction of a gradual change into a mathematical function that would otherwise be discontinuous. It is used in radiology to smooth out choppy signals, and in optics, to blend diffractive steps.
References in periodicals archive ?
Yuta Kawamura, marketing manager, electronic imaging division, Fujifilm Middle East and Africa, said: "If we study the history of lens and optics, an apodization filter has only been used on a manual focus lens.
Unlike other advanced IOLs, the AcrySof(R) ReSTOR(R) lens cleverly circumvents the dependence on eye muscles for accommodation by combining three complementary optical technologies -- apodization, diffraction, and refraction.
Apodization improves image quality by optimizing light energy delivered to the retina by distributing the appropriate amounts of light to near and distant focal points, regardless of lighting situation.
Alcon has patented the application of apodization technology to an IOL, making the AcrySof(R) ReSTOR(R) lens the first and only apodized diffractive IOL.
3] solutions were analyzed in transmission mode, and all spectra were corrected for the spectral distortion using the Happ-Genzel apodization.
Other advanced analysis features include predefined and user-defined chirp and apodization for longitudinal grating structure, and extensive post-processing for spectrum analysis.
The collection parameters were as follows: number of scans = 64, resolution = 4, Apodization = Happ-Genzel, Zero filling = none.
1] resolution and co-adding 128 scans with Happ-Genzel apodization.
1], and a triangular apodization smoothing function was implemented prior to Fourier transformation.
A triangular apodization function was employed prior to Fourier transformation.
1], and a triangular apodization smoothing function was employed prior to Fourier transformation.