Design of one-dimensional power spectrum using two-dimensional fast Fourier transform for discrimination of paper-based kraft tapes

2015 ◽  
Vol 257 ◽  
pp. 329-336 ◽  
Author(s):  
Sara Sasaoka ◽  
Koichi Saito ◽  
Kenjirou Higashi ◽  
Waree Limwikrant ◽  
Kunikazu Moribe ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Power Spectrum ◽  
Fast Fourier Transform ◽  
Two Dimensional ◽  
One Dimensional

Two-Dimensional Fast Fourier Transform and Power Spectrum for Surface Roughness in three Dimensions

1995 ◽  
Vol 209 (5) ◽  
pp. 381-391 ◽  
Author(s):  
W P Dong ◽  
K J Stout
Keyword(s):  
Surface Roughness ◽  
Fourier Transform ◽  
Power Spectrum ◽  
Fast Fourier Transform ◽  
Surface Characterization ◽  
Three Dimensions ◽  
Two Dimensional ◽  
Comprehensive Understanding ◽  
Extract Information

Two-dimensional power spectrums of engineering surfaces contain plenty of information that is important and valuable for surface characterization. However, the characteristics of the two-dimensional spectrums are largely unknown and the algorithm to implement them is not familiar to many engineers or researchers. This paper describes a detailed procedure to implement the two-dimensional fast Fourier transform and power spectrum for surface roughness in three dimensions. Methods used to extract information from the spectrums are introduced. In order to perform two-dimensional spectral analysis and to have a comprehensive understanding of the characteristics of engineering surfaces, an atlas of the two-dimensional spectrums of representative engineering surfaces are presented. The properties of the spectrums are discussed in conjunction with theoretical analysis and visual characterization of the presented spectrums.

Two dimensional fast Fourier transform for large data matrices

1989 ◽  
Vol 52 (3) ◽  
pp. 333-336 ◽  
Author(s):  
Mulugeta H. Serzu ◽  
Wooil M. Moon
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Large Data ◽  
Two Dimensional ◽  
Data Matrices

An instruction systolic array implementation of the two-dimensional Fast Fourier Transform

1991 ◽  
Vol 33 (2) ◽  
pp. 101-110 ◽  
Author(s):  
Susanta Sarkar ◽  
A.K Majumdar
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Systolic Array ◽  
Two Dimensional

Phase Retrieval Errors Analysis of Interferogram Using Two Dimensional Fast Fourier Transform Method

2013 ◽  
Vol 40 (3) ◽  
pp. 0308002
Author(s):  
张敏 Zhang Min ◽  
唐锋 Tang Feng ◽  
王向朝 Wang Xiangzhao ◽  
戴凤钊 Dai Fengzhao
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Phase Retrieval ◽  
Two Dimensional ◽  
Transform Method ◽  
Fourier Transform Method ◽  
Fast Fourier Transform Method ◽  
Retrieval Errors ◽  
Errors Analysis

scholarly journals Interferometric Techniques Applied to High Resolution Observation of the Solar Granulation

1979 ◽  
Vol 50 ◽  
pp. 30-1-30-6
Author(s):  
Claude Aime
Keyword(s):  
High Resolution ◽  
Power Spectrum ◽  
Statistical Properties ◽  
Two Dimensional ◽  
Solar Granulation ◽  
One Dimensional ◽  
Resolution Observation ◽  
Stellar Interferometry ◽  
High Resolution Observation

AbstractMichelson,one-dimensional, and two-dimensional apertures are used to obtain the statistical properties of the solar granulation. The calibration of the power spectrum is performed via Michelson stellar interferometry as well as by the use of changes in seeing conditions during speckle-interferometric measurements. The correction of 40 analyses, determined with Fried's parameter ro ranging between 2.5 cm and 11.5 cm, provides satisfactory convergence for frequencies up to 3 cycles per arc second

scholarly journals Application of two-dimensional fast Fourier transform algorithm, analog of the Cooley-Tukey algorithm, for 4k fixed format digital image of satellite data in frequency domain processing

2020 ◽  
Vol 149 ◽  
pp. 02010 ◽  
Author(s):  
Mikhail Noskov ◽  
Valeriy Tutatchikov
Keyword(s):  
Fourier Transform ◽  
Numerical Experiment ◽  
Fast Fourier Transform ◽  
Frequency Domain ◽  
Discrete Fourier Transform ◽  
Satellite Data ◽  
Digital Image ◽  
Digital Images ◽  
Two Dimensional ◽  
Fast Fourier Transform Algorithm

Currently, digital images in the format Full HD (1920 * 1080 pixels) and 4K (4096 * 3072) are widespread. This article will consider the option of processing a similar image in the frequency domain. As an example, take a snapshot of the earth's surface. The discrete Fourier transform will be computed using a two-dimensional analogue of the Cooley-Tukey algorithm and in a standard way by rows and columns. Let us compare the required number of operations and the results of a numerical experiment. Consider the examples of image filtering.

Multichannel Fourier Transform Spectroscopy Using Two-Dimensional Detection of the Interferogram and its Application to Raman Spectroscopy

1993 ◽  
Vol 47 (7) ◽  
pp. 863-868 ◽  
Author(s):  
Satoshi Takahashi ◽  
Jeung Sun Ahn ◽  
Shuji Asaka ◽  
Teizo Kitagawa
Keyword(s):  
Fourier Transform ◽  
Fringe Pattern ◽  
Principal Axis ◽  
Monochromatic Light ◽  
Fourier Transform Spectroscopy ◽  
Present System ◽  
The Novel ◽  
Two Dimensional ◽  
One Dimensional ◽  
Ccd Detector

A system for multichannel Fourier transform spectroscopy was constructed by using a CCD detector and an interferometer consisting of Savart plate held between two polarizers, and practical problems associated with its application to Raman experiments were investigated. The novel idea of the present system lies in avoiding the aliasing distortion, seen in the spectrum measured with a one-dimensional multichannel detector, by arranging the principal axis of the sensitized plane of the CCD detector so that it is not coincident with the direction of the fringe pattern of the interferogram. The observed interferogram suffered geometrical distortion due to incompleteness of the Savart plate. In order to circumvent this problem, an algorithm for correcting this distortion by referring to the interferogram of appropriate monochromatic light was successfully developed. The resolution of a Raman spectrum obtained for indene was ∼40 cm−1, in agreement with the theoretical value expected for this system.

Sign in / Sign up

Export Citation Format

Share Document