注意计算的时候可以一直用点值,最后在再IDFT变系数表示 #include <iostream>#include<cstdio>#include<string>#include<algorithm>#include<cmath>usingnamespacestd;constintN=131072+5; inlineintread(){charc=getchar();intx=0,f=1;while(c<'0'||c
Discrete Fourier transformFast Fourier transformSystolic array architectureVLSIFPGARealization of \\(N\\) -point discrete Fourier transform (DFT) using one-dimensional or two-dimensional systolic array structures has been developed for power of two DFT sizes. DFT algorithm, which can be represented as...
[7] present a fast Fourier transform algorithm implemented in an FPGA using a pipeline approach. The common theme between these image processing techniques and many others is that they used a pipeline approach in which data is processed on a continuous basis. This makes these algorithms excellent...
Fourier transform profilometry: a review Opt Lasers Eng (2001) X.Suet al. Reliability-guided phase unwrapping algorithm: a review Opt Lasers Eng (2004) C.Zuoet al. Temporal phase unwrapping algorithms for fringe projection profilometry: a comparative review ...
The nano formulations of drugs even after 2 hr of lag phase showed sustained and significant release of drug up to 12 hr whereas both the drugs in the sol form, showed fast reduction (at 4hr) in the concentration. We have indeed detected the presence efavirenz and curcumin up to 8...
It should be emphasized that the EMSC algorithm is in principle a model-based pre-processing approach that corrects spectral artifacts commonly found in FTIR spectra of biological samples, including (i) additive baseline (or interference) effects and (ii) multiplicative scaling effects due to path-...
(Sine ICMIC double cross map), which enhances the complexity of the chaotic system by mixing the different orbits of sub-systems. Based on the 2D-SIDCM, this paper proposes a novel triple-image bit-level encryption algorithm. Bit-level operation and scanning arrangements are introduced into the...
In this paper, we use submatrices of the inverse fast Fourier transform (IFFT) and fast Fourier transform (FFT) to reduce the number of variables in the optimization to efficiently compute the optimal tones. Performance results are presented which demonstrate that the proposed algorithm yields PICR...
Additionally, image encryption algorithms in the frequency domain first use various transforms, such as the fast Fourier transform (FFT) [7], discrete wavelet transform (DWT) [8], or DCT [9] to map the plain image to a frequency coefficient matrix. Next, these coefficients are scrambled, ...
The modification includes etching plasmonic voids following the algorithm of a 2nd order Sierpiński gasket22 in order to pursue three specific objectives: (i) to lessen the intrinsic damping effect on the quality factor by reducing metal surface area (ii) to excite both dipolar and magnetic ...