The frequency domain plays an important role in image processing to smooth, enhance, and detect edges of images. Although image data typically does not include imaginary values, the fast Fourier TRANSFORM (FFT) has been used for obtaining spectra. In this paper, the fast Hartley TRANSFORM (FHT) is used to TRANSFORM two-dimensional image data. Because the Hartley TRANSFORM is real valued, it does not require complex operations. Both spectra and autocorrelations of two-dimensional ultrasound images of normal and abnormal livers were computed.
標簽： processing frequency important enhance
上傳時間： 2014-01-08
上傳用戶：1051290259
An important book that cover wavelet domain. It help a lot in understanding wavelets and their applications. Beside explanations of the TRANSFORM and application of this, there are also presents the reasons why wavelets are better than Fourier TRANSFORM.
標簽： understanding important wavelets wavelet
上傳時間： 2017-06-14
上傳用戶：lanhuaying
一種新的方法，可以自動對兩幅圖像進行 ·Matlab code for encoding an unwrappi ·岡薩雷斯的經典教材數字圖像處理的matl ·Fast Fourier TRANSFORM ·《Matlab控制系統與應用實例》一書源碼 ·Bayesian Compressed Sensing ·永磁同步電動機的空間矢量控制simulink ·Matlab計算信噪比,單聲道，雙聲道均可
標簽：
上傳時間： 2017-06-25
上傳用戶：從此走出陰霾
NN Functions a program in Lisp to demonstrate working of an artificial neuron. (Enter an input vector X and weight vector W. Calculate weighted sum XW. TRANSFORM this using signal or activation functions like logistic, threshold, hyperbolic-tangent, linear, exponential, sigmoid or some other functions (syntax provided) and display the output).
標簽： demonstrate artificial Functions program
上傳時間： 2013-12-30
上傳用戶：hfmm633
數字控制振蕩器（NCO，numerical controlled oscillator）是軟件無線電、直接數據頻 率合成器（DDS，Direct digital synthesizer）、快速傅立葉變換（FFT，Fast Fourier TRANSFORM） 等的重要組成部分，同時也是決定其性能的主要因素之一，隨著芯片集成度的提高、在信號 處理、數字通信領域、調制解調、變頻調速、制導控制、電力電子等方面得到越來越廣泛的 應用。
上傳時間： 2017-07-15
上傳用戶：nanshan
Abstract - A fl exible multiscale and directional representation for images is proposed. The scheme combines directional fi lter banks with the Laplacian pyramid to provides a sparse representation for two- dimensional piecewise smooth signals resembling images. The underlying expansion is a frame and can be designed to be a tight frame. Pyramidal directional fi lter banks provide an effective method to implement the digital curvelet TRANSFORM. The regularity issue of the iterated fi lters in the directional fi lter bank is examined.
標簽： representation directional multiscale Abstract
上傳時間： 2013-12-15
上傳用戶：zxc23456789
Main program running when workpiece is ready on deferent belt(deferent_ready=ture). * Call Square_Wave subroutine to generate 0.5ms square wave on P1.2 to drive * electromotor,then drive deferent belt step forward. When it steps to the measure * zone, it stops to be measured. Then call A_D subroutine to TRANSFORM analog * signals to digital signals , after then call serial subroutine to transfer * digital signals to PC. Call square wave subroutine to drive deferent belt step to * original position waitting for defere ready flag to run the next circle.
標簽： deferent_ready workpiece deferent program
上傳時間： 2017-08-31
上傳用戶：baiom
Use the fast Fourier TRANSFORM function fft to analyse following signal. Plot the original signal, and the magnitude of its spectrum linearly and logarithmically. Apply Hamming window to reduce the leakage. . The hamming window can be coded in Matlab as for n=1:N hamming(n)=0.54+0.46*cos((2*n-N+1)*pi/N); end; where N is the data length in the FFT.
標簽： matlab fft
上傳時間： 2015-11-23
上傳用戶：石灰巖123
關于stockwell TRANSFORM的學位論文
上傳時間： 2017-06-10
上傳用戶：yyy344
一中流水線結構的FFT，構建的一中新的FFT，基于流水線結構使得其運行速度更快，更適合實用。
標簽： TRANSFORM pipeline fourier fast
上傳時間： 2018-03-26
上傳用戶：lpyaking
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